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CHAUNCEY
404 E Collage St
Iowa City, Iowa
Schematic Design Development
Technical Manual – Volume 2
August 4, 2016
Blank Page
The Chauncey - Schematic Design Development
Iowa City, Iowa
SECTION 00 01 10
TABLE OF CONTENTS
VOLUME 1
PROCUREMENT AND CONTRACTING REQUIREMENTS
DIVISION 00 -- PROCUREMENT AND CONTRACTING REQUIREMENTS
00 01 01 Project Directory
00 01 07 Seals and Signatures
00 01 10 Table of Contents
00 41 00 Bid Form
00 43 25 Substitution Request Form
00 52 13 Agreement Form
00 72 00 General Conditions
00 73 00 Supplementary Conditions
SPECIFICATIONS
DIVISION 01 -- GENERAL REQUIREMENTS
01 10 00 Summary
01 23 00 Alternates
01 30 00 Administrative Requirements
01 33 29 Sustainable Design Reporting
01 33 29.04 Material Content Form
01 33 29.07 Prohibited Content Installer Certification
01 35 14.01 LEED NC 2009 Credit Summary
01 35 15 LEED Certification Procedures
01 35 16 LEED Submittal Forms
01 35 16.01 LEED Material Cost Summary Form
01 35 16.02 LEED Wood-Containing Product List
01 35 16.03 LEED Metal-Containing Product List
01 35 16.04 LEED New Product Content Form
01 35 16.05 LEED New Product Source Form
01 35 16.07 LEED Prohibited Content Installer Certification
01 40 00 Quality Requirements
01 50 00 Temporary Facilities and Controls
01 51 00 Temporary Utilities
01 57 13 Temporary Erosion and Sediment Control
01 57 21 Indoor Air Quality Controls
01 58 13 Temporary Project Signage
01 60 00 Product Requirements
01 61 16 Volatile Organic Compound (VOC) Content Restrictions
01 70 00 Execution and Closeout Requirements
01 74 19 Construction Waste Management and Disposal
01 78 00 Closeout Submittals
01 79 00 Demonstration and Training
01 91 13 General Commissioning Requirements
DIVISION 02 -- EXISTING CONDITIONS
02 41 00 Demolition
02 41 16 Demolition of Building Structure
02 41 19 Selective Demolition
Rohrbach Associates PC TABLE OF CONTENTS
Project No. 1213 00 01 10 - 1
The Chauncey - Schematic Design Development
Iowa City, Iowa
DIVISION 03 -- CONCRETE
03 10 00 Concrete Forming and Accessories
03 20 00 Concrete Reinforcing
03 30 00 Cast-in-Place Concrete
03 35 13 Polished Concrete Finishing
03 41 00 Precast Structural Concrete
03 45 00 Precast Architectural Concrete
03 54 00 Cast Underlayment
DIVISION 04 -- MASONRY
04 20 00 Unit Masonry
DIVISION 05 -- METALS
05 12 00 Structural Steel Framing
05 31 00 Steel Decking
05 40 00 Cold-Formed Metal Framing
05 50 00 Metal Fabrications
05 51 00 Metal Stairs
05 52 13 Pipe and Tube Railings
05 53 05 Gratings and Floor Plates
05 70 00 Decorative Metal
05 73 00 Decorative Metal Handrails
05 75 00 Decorative Formed Metal
DIVISION 06 -- WOOD, PLASTICS, AND COMPOSITES
06 10 00 Rough Carpentry
06 20 00 Finish Carpentry
06 41 00 Architectural Wood Casework
06 42 16 Wood-Veneer Paneling
DIVISION 07 -- THERMAL AND MOISTURE PROTECTION
07 13 00 Sheet Waterproofing
07 21 00 Thermal Insulation
07 25 00 Weather Barriers
07 33 63 Vegetated Roofing
07 42 13 Metal Wall Panels
07 42 29 Terra Cotta Wall Cladding
07 42 64 Metal Composite Material Wall Panels
07 52 00 Modified Bituminous Membrane Roofing
07 54 00 Thermoplastic Membrane Roofing
07 62 00 Sheet Metal Flashing and Trim
07 71 00 Roof Specialties
07 72 00 Roof Accessories
07 76 00 Roof Pavers
07 76 01 Roof Wood Deck Tiles
07 81 00 Applied Fireproofing
07 84 00 Firestopping
07 92 00 Joint Sealants
Rohrbach Associates PC TABLE OF CONTENTS
Project No. 1213 00 01 10 - 2
The Chauncey - Schematic Design Development
Iowa City, Iowa
DIVISION 08 -- OPENINGS
08 11 13 Hollow Metal Doors and Frames
08 11 16 Aluminum Doors and Frames
08 11 17 Aluminum Terrace Doors
08 14 16 Flush Wood Doors
08 31 00 Access Doors and Panels
08 32 23 Sliding/Folding Glazed Doors / Walls
08 33 23 Overhead Coiling Doors
08 33 36 Side Coiling Grilles
08 35 13.23 Folding Fire Doors
08 36 13 Sectional Doors
08 39 19 Watertight Doors and Frames
08 42 33 Revolving Door Entrances
08 43 13 Aluminum-Framed Storefronts
08 44 13 Glazed Aluminum Curtain Walls
08 44 26 Structural Glass Curtain Walls
08 46 00 Glazed Interior Wall and Door Assemblies
08 51 13 Aluminum Windows
08 71 00 Door Hardware
08 79 13 Key Storage Equipment
08 80 00 Glazing
08 91 00 Louvers
08 92 00 Louvered Equipment Enclosures
08 95 43 Flood-Control Vents
DIVISION 09 -- FINISHES
09 21 16 Gypsum Board Assemblies
09 30 00 Tiling
09 51 00 Suspended Acoustical Ceilings
09 65 00 Resilient Flooring
09 65 66 Resilient Athletic Flooring
09 67 00 Fluid-Applied Flooring
09 68 13 Tile Carpeting
09 77 33 Glass Fiber-Reinforced Plastic Panels
09 84 00 Acoustic Room Components
09 91 13 Exterior Painting
09 91 23 Interior Painting
09 96 00 High-Performance Coatings
DIVISION 10 -- SPECIALTIES
10 14 00 Signage
10 21 13.26 Phenolic Toilet Partitions
10 22 13 Wire Mesh Partitions
10 28 00 Toilet, Bath, and Laundry Accessories
10 44 00 Fire Protection Specialties
10 55 00 Postal Specialties
10 56 17 Wall Mounted Standards and Shelving
DIVISION 11 -- EQUIPMENT
11 31 00 Residential Appliances
11 67 13 Bowling Alley Equipment (not incl. in this review)
11 81 23 Façade Access Equipment
11 81 29 Facility Fall Protection
11 82 23 Recycling Equipment - Tri-Sorter
11 82 27 Waste Compactors
Rohrbach Associates PC TABLE OF CONTENTS
Project No. 1213 00 01 10 - 3
The Chauncey - Schematic Design Development
Iowa City, Iowa
DIVISION 12 -- FURNISHINGS
12 24 13 Roller Window Shades
12 36 00 Countertops
12 48 13 Entrance Floor Mats and Frames
12 93 00 Site Furnishings
DIVISION 13 -- SPECIAL CONSTRUCTION
13 48 23 Sound and Vibration Control Assemblies
DIVISION 14 -- CONVEYING EQUIPMENT
14 20 10 Passenger Elevators
14 27 05 Custom Elevator Cabs and Hoistway Doors
14 28 17 Passenger Elevator Control Systems
14 28 19 Elevator Equipment
14 91 00 Facility Chutes
DIVISION 21 -- FIRE SUPPRESSION
21 04 00 Common Requirements for Fire Suppression
21 05 00 Common Work Results for Fire Suppression
21 05 23 General-Duty Valves for Water-Based Fire-Suppression Piping
21 12 00 Fire-Suppression Standpipes
21 13 00 Fire Suppression Sprinklers
21 30 00 Fire Pumps
DIVISION 22 -- PLUMBING
22 04 00 Common Requirements for Plumbing
22 05 19 Meters and Gages for Plumbing Piping
22 05 33 Heat Tracing for Plumbing Piping
22 05 48 Vibration and Seismic Controls for Plumbing Piping and Equipment
22 05 53 Identification for Plumbing Piping and Equipment
22 07 16 Plumbing Equipment Insulation
22 07 19 Plumbing Piping Insulation
22 10 05 Plumbing Piping
22 10 06 Plumbing Piping Specialties
22 30 00 Plumbing Equipment
22 33 00 Commercial Electric Domestic Water Heaters
22 40 00 Plumbing Fixtures
END OF TABLE OF CONTENTS – VOLUME 1
Rohrbach Associates PC TABLE OF CONTENTS
Project No. 1213 00 01 10 - 4
The Chauncey - Schematic Design Development
Iowa City, Iowa
VOLUME 2
00 01 10 Table of Contents
DIVISION 23 -- HEATING, VENTILATING, AND AIR-CONDITIONING (HVAC)
23 04 00 Common Requirements for HVAC
23 05 13 Common Motor Requirements for HVAC Equipment
23 05 16 Expansion Fittings and Loops for HVAC Piping
23 05 19 Meters and Gages for HVAC Piping
23 05 48 Vibration and Seismic Controls for HVAC Piping and Equipment
23 05 53 Identification for HVAC Piping and Equipment
23 05 93 Testing, Adjusting, and Balancing for HVAC
23 07 13 Duct Insulation
23 07 19 HVAC Piping Insulation
23 08 00 Commissioning Of HVAC
23 09 13 Instrumentation and Control Devices for HVAC
23 09 13.53 Variable-Frequency Motor Controllers for HVAC
23 09 23 Direct-Digital Control System for HVAC
23 09 93 Sequence Of Operations for HVAC Controls
23 21 13 Hydronic Piping
23 21 13.33 Ground-Loop Heat-Pump Piping
23 21 14 Hydronic Specialties
23 21 23 Hydronic Pumps
23 23 00 Refrigerant Piping
23 25 00 HVAC Water Treatment
23 31 00 HVAC Ducts and Casings
23 33 00 Air Duct Accessories
23 34 16 Centrifugal HVAC Fans
23 34 23 HVAC Power Ventilators
23 34 33 Air Curtains
23 36 00 Air Terminal Units
23 37 00 Air Outlets and Inlets
23 38 13 Commercial-Kitchen Hoods
23 40 00 HVAC Air Cleaning Devices
23 52 13 Electric Boilers
23 65 33 Liquid Coolers
23 72 00 Packaged Energy Recovery Ventilating Units
23 81 19 Self-Contained Air-Conditioners
23 81 27 Small Split-System Heating and Cooling
23 81 46 Water-Source Heat Pumps
23 81 49 Water-To-Water Heat Pumps
23 82 00 Convection Heating and Cooling Units
DIVISION 26 -- ELECTRICAL
26 04 00 Common Requirements for Electrical
26 05 19 Low-Voltage Electrical Power Conductors and Cables
26 05 26 Grounding and Bonding for Electrical Systems
26 05 29 Hangers and Supports for Electrical Systems
26 05 34 Conduit
26 05 35 Surface Raceways
26 05 36 Cable Trays for Electrical Systems
26 05 37 Boxes
26 05 53 Identification for Electrical Systems
26 05 73 Power System Studies
26 09 23 Lighting Control Devices
26 22 00 Low-Voltage Transformers
Rohrbach Associates PC TABLE OF CONTENTS
Project No. 1213 00 01 10 - 5
The Chauncey - Schematic Design Development
Iowa City, Iowa
26 24 13 Switchboards
26 24 16 Panelboards
26 25 01 Feeder and Plug-In Busway
26 27 13 Electricity Metering
26 27 17 Equipment Wiring
26 27 26 Wiring Devices
26 28 13 Fuses
26 28 18 Enclosed Switches
26 29 13 Enclosed Controllers
26 32 13 Engine Generators
26 36 00 Transfer Switches
26 41 13 Lightning Protection for Structures
26 43 00 Surge Protective Devices
26 51 00 Interior Lighting
DIVISION 27 -- COMMUNICATIONS
27 05 01 Common Work Results for Communications
27 05 27 Grounding and Bonding for Communications Systems
27 05 28 Pathways for Communications
27 05 53.01 Identification for Communications Systems
27 11 01 Communications Equipment Room Fittings
27 13 13 Communications Copper Backbone Cabling
27 13 23 Communications Optical Backbone Cabling
27 13 33 Communications Coaxial Backbone Cabling
27 15 13 Communications Copper Horizontal Cabling
27 15 33 Communications Coaxial Horizontal Cabling
27 15 43 Communications Faceplates and Connectors
27 41 00 Audio-Video Systems
DIVISION 28 -- ELECTRONIC SAFETY AND SECURITY
28 05 00 Common Work Results for Electronic Security
28 13 00 Electronic Access Control System
28 23 00 Electronic Video Surveillance System
28 31 00 Fire Detection and Alarm
DIVISION 31 -- EARTHWORK
31 10 00 Site Clearing
31 20 00 Earthwork
31 63 29 Drilled Concrete Piers and Shafts
DIVISION 32 -- EXTERIOR IMPROVEMENTS
32 13 13 Portland Cement Concrete Paving
32 14 00 Unit Paving
32 18 13 Synthetic Grass Surfacing
32 92 00 Turf
32 93 00 Plants
DIVISION 33 -- UTILITIES
33 10 00 Water Utilities
33 10 05 Water Service work
33 30 00 Site Underground Utilities
DIVISION 35 – WATERWAY AND MARINE CONSTRUCTION
35 49 13.19 Demountable Floodwalls
END OF TABLE OF CONTENTS – VOLUME 2
Rohrbach Associates PC TABLE OF CONTENTS
Project No. 1213 00 01 10 - 6
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Heating, Ventilating and Air
Conditioning (HVAC)
23
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The Chauncey - Schematic Design Development
Iowa City, Iowa
SECTION 23 05 48
VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT
PART 1 GENERAL
1.01 SECTION INCLUDES
A. Equipment support bases.
B. Vibration isolators.
C. Roof curbs.
1.02 SUBMITTALS
A. Product Data:
1. Provide manufacturer's product literature documenting compliance with PART 2
PRODUCTS.
2. Include seismic rating documentation for each isolator and restraint component
accounting for horizontal, vertical, and combined loads.
B. Shop Drawings:
1. Provide schedule of vibration isolator type with location and load on each.
2. Fully dimensioned fabrication drawings and installation details for vibration isolation
bases, member sizes, attachments to isolators, and supported equipment.
3. Include auxiliary motor slide bases and rails, base weights, inertia bases, concrete
weights, equipment static loads, support points, vibration isolators, and detailed layout of
isolator location and orientation with static and dynamic load on each isolator.
4. Clearly indicate the load and capacity assumptions selected. Include copies of any
calculations.
C. Product Data: Provide schedule of vibration isolator type with location and load on each.
D. Shop Drawings: Indicate inertia bases and locate vibration isolators, with static and dynamic
load on each.
E. Manufacturer's Instructions: Indicate installation instructions with special procedures and
setting dimensions.
PART 2 PRODUCTS
2.01 MANUFACTURERS
A. Isolation Technology, Inc : www.isolationtech.com.
B. Kinetics Noise Control, Inc : www.kineticsnoise.com.
C. Mason Industries : www.mason-ind.com.
D. Vibration Eliminator Company, Inc : www.veco-nyc.com.
E. Substitutions: See Section 01 60 00 - Product Requirements.
2.02 PERFORMANCE REQUIREMENTS
A. General:
1. All vibration isolators, base frames and inertia bases to conform to all uniform deflection
and stability requirements under all operating loads.
2. Steel springs to function without undue stress or overloading.
3. Steel springs to operate in the linear portion of the load versus deflection curve over
deflection range of not less than 50 percent above specified deflection.
4. Lateral to vertical stiffness ratio to not exceed 0.08 with spring deflection at minimum 75
percent of specified deflection.
5. All equipment mounted on vibration isolated bases to have minimum operating clearance
of 2 inches between the base and floor or support beneath unless noted otherwise.
VIBRATION AND SEISMIC CONTROLS FOR
Alvine Engineering HVAC PIPING AND EQUIPMENT
Alvine No. 2012 2897 23 05 48 - 1
The Chauncey - Schematic Design Development
Iowa City, Iowa
2.03 EQUIPMENT SUPPORT BASES
A. Concrete Inertia Bases:
1. Construction: Engineered, steel forms, with integrated isolator brackets and anchor bolts,
welded or tied reinforcing bars running both ways in a single layer.
2. Size: 6 inches minimum depth and sized to accommodate elbow supports.
3. Mass: Minimum of 1.5 times weight of isolated equipment.
4. Connecting Point: Reinforced to connect isolators and snubbers to base including
template and fastening devices for equipment.
5. Concrete: Filled on site with minimum 3000 psi concrete. See Section 03 30 00 for
additional requirements.
6. Applications: Adjustable motor slide rails for centrifugal fans.
2.04 VIBRATION ISOLATORS
A. Non-Seismic Type:
1. All Elastomeric-Fiber Glass Pads:
a. Configuration: Flat or molded.
b. Thickness: 0.25 inch minimum.
c. Assembly: Single or multiple layers using bonded, galvanized sheet metal separation
plate between each layer with load plate providing evenly distributed load over pad
surface.
2. Elastomeric Mounts:
a. Material: Oil, ozone, and oxidant resistant compounds.
b. Assembly: Encapsulated load transfer plate bolted to equipment and base plate with
anchor hole bolted to supporting structure.
3. Steel Springs:
a. Assembly: Freestanding, laterally stable without housing.
b. Leveling Device: Rigidly connected to equipment or frame.
4. Restrained Steel Springs:
a. Housing: Rigid blocking during rigging prevents equipment installed and operating
height from changing during temporary weight reduction.
b. Equipment Wind Loading: Adequate means for fastening isolator top to equipment
and isolator base plate to supporting structure.
5. Elastomeric Hangers:
a. Housing: Steel construction containing elastomeric isolation element to prevent rod
contact with housing and short-circuiting of isolating function.
b. Incorporate steel load distribution plate sandwiching elastomeric element to housing.
6. Spring Hanger:
a. Housing: Steel construction containing stable steel spring and integral elastomeric
element preventing metal to metal contact.
b. Bottom Opening: Sized to allow plus/minus 15 degrees rod misalignment.
7. Combination Elastomeric-Spring Hanger:
a. Housing: Steel construction containing stable steel spring with elastomeric element
in series isolating upper connection of hanger box to building structure.
b. Bottom Opening: Sized to allow plus/minus 15 degrees rod misalignment.
8. Thrust Restraints:
a. Housing: Steel construction containing stable steel spring and integral elastomeric
element installed in pairs to resist air pressure thrusts.
b. Bottom Openings: Sized to allow plus/minus 15 degrees rod misalignment.
2.05 ROOF CURBS
A. Vibration Isolation Curbs:
1. Non-Seismic Curb:
a. Location: Between structure and rooftop equipment.
VIBRATION AND SEISMIC CONTROLS FOR
Alvine Engineering HVAC PIPING AND EQUIPMENT
Alvine No. 2012 2897 23 05 48 - 2
The Chauncey - Schematic Design Development
Iowa City, Iowa
b. Construction: Aluminum.
c. Integral vibration isolation to conform to requirements of this section.
d. Weather exposed components consist of corrosion resistant materials.
2.06 VIBRATION ISOLATION ROOF-CURB RAILS
A. Manufacturers:
1. Amber/Booth Company, Inc.
2. Kinetics Noise Control, Inc.
3. Mason Industries, Inc.
4. Vibration Eliminator Co., Inc.
5. Vibration Mountings & Controls/Korfund.
B. Description: Factory-assembled, fully enclosed, insulated, air- and watertight curb rail designed
to resiliently support equipment and to withstand 125-mph wind impinging laterally against side
of equipment.
C. Lower Support Assembly: Sheet-metal "Z" section containing adjustable and removable steel
springs that support upper floating frame. Upper frame shall provide continuous support for
equipment and shall be captive to resiliently resist wind and seismic forces. Lower support
assembly shall have a means for attaching to building structure and a wood nailer for attaching
roof materials, and shall be insulated with a minimum of 2 inches of rigid, glass-fiber insulation
on inside of assembly.
D. Spring Isolators: Adjustable, restrained spring isolators shall be mounted on 1/4-inch- thick,
elastomeric vibration isolation pads and shall have access ports, for level adjustment, with
removable waterproof covers at all isolator locations. Isolators shall be located so they are
accessible for adjustment at any time during the life of the installation without interfering with
the integrity of the roof.
1. Restrained Spring Isolators: Freestanding, steel, open-spring isolators with seismic
restraint.
a. Housing: Steel with resilient vertical-limit stops and adjustable equipment mounting
and leveling bolt.
b. Outside Spring Diameter: Not less than 80 percent of the compressed height of the
spring at rated load.
c. Minimum Additional Travel: 50 percent of the required deflection at rated load.
d. Lateral Stiffness: More than 80 percent of the rated vertical stiffness.
e. Overload Capacity: Support 200 percent of rated load, fully compressed, without
deformation or failure.
2. Elastomeric Isolator Pads: Oil- and water-resistant elastomer or natural rubber, arranged
in single or multiple layers, molded with a nonslip pattern and galvanized steel baseplates
of sufficient stiffness for uniform loading over pad area, and factory cut to sizes that match
requirements of supported equipment.
a. Material: Standard neoprene or Bridge-bearing neoprene, complying with AASHTO
M 251.
b. Durometer values range from 30 to 70 and are measures of hardness or, indirectly,
deflection. Lower durometer values indicate softer material with more deflection.
c. Durometer Rating: 45.
d. Use multiple layers, separated by steel shims, depending on supported equipment
load. See manufacturer's data for load capacities.
e. Number of Layers: 2.
E. Snubber Bushings: All-directional, elastomeric snubber bushings at least 1/4 inch thick.
F. Water Seal: Galvanized sheet metal with EPDM seals at corners, attached to upper support
frame, extending down past wood nailer of lower support assembly, and counterflashed over
roof materials.
VIBRATION AND SEISMIC CONTROLS FOR
Alvine Engineering HVAC PIPING AND EQUIPMENT
Alvine No. 2012 2897 23 05 48 - 3
The Chauncey - Schematic Design Development
Iowa City, Iowa
PART 3 EXECUTION
3.01 INSTALLATION - GENERAL
A. Install in accordance with manufacturer's instructions.
B. Bases:
1. Set concrete inertia bases for 2 inches clearance between housekeeping pad and base.
2. Adjust equipment level.
C. Prior to making piping connections to equipment with operating weights substantially different
from installed weights, block up equipment with temporary shims to final height. When full load
is applied, adjust isolators to load to allow shim removal.
D. Support piping connections to equipment mounted on isolators using isolators or resilient
hangers for scheduled distance.
1. Up to 4 Inches Pipe Size: First three points of support.
2. 5 to 8 Inches Pipe Size: First four points of support.
3. 10 inches Pipe Size and Over: First six points of support.
4. Select three hangers closest to vibration source for minimum 1.0 inch static deflection or
static deflection of isolated equipment. Select remaining isolators for minimum 1.0 inch
static deflection or 1/2 static deflection of isolated equipment.
3.02 FIELD QUALITY CONTROL
A. See Section 01 40 00 - Quality Requirements, for additional requirements.
B. Inspect isolated equipment after installation and submit report. Include static deflections.
3.03 SCHEDULE
A. Pipe Isolation Schedule.
1. 1 Inch Pipe Size: Isolate 120 diameters from equipment.
2. 2 Inch Pipe Size: Isolate 90 diameters from equipment.
3. 3 Inch Pipe Size: Isolate 80 diameters from equipment.
4. 4 Inch Pipe Size: Isolate 75 diameters from equipment.
5. 6 Inch Pipe Size: Isolate 60 diameters from equipment.
6. 8 Inch Pipe Size: Isolate 60 diameters from equipment.
B. Equipment Isolation Schedule.
1. HVAC Pumps.
a. Base: Concrete inertia base.
b. Base Thickness: 6 inches.
c. Isolator Type: Open Spring Isolators
d. Isolator Deflection: 2 inches.
END OF SECTION
VIBRATION AND SEISMIC CONTROLS FOR
Alvine Engineering HVAC PIPING AND EQUIPMENT
Alvine No. 2012 2897 23 05 48 - 4
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Division 26
Electrical
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Division 27
Communications
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Division 28
Electronic Safety and Security
28
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Division 31
Earthwork
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The Chauncey –Schematic Design Development
Iowa City, Iowa
SECTION 31 10 00
SITE CLEARING
PART 1 GENERAL
1.01SUMMARY:
A.Furnish labor, material, tools and equipment to prepare site as indicated and specified.
1.02REFERENCES:
A.IDOT Standard Specifications.
PART 2 PRODUCTS
None.
PART 3 EXECUTION
3.01TECHNIQUES:
A.Except as amended in this document, the work in this section will conform with the following
divisions and sections of theIDOT Standard Specifications:
Division 21. Earthwork, Subgrades and Subbases.
Section 2101. Clearing and Grubbing.
Division 25. Miscellaneous Construction.
Section 2519. Fence Construction.
3.02EXISTING TREES, SHRUBS AND VEGETATION:
A.All trees, shrubs and vegetation shall remain and be protected from damage unless
specifically noted as "REMOVE" or “CLEAR AND GRUB” on the plans or as directed by the
Engineer.
B.No construction materials and/or equipment are to be stored, piled, or parked within the
trees' drip line.
C.Contractor is responsible for damage outside the limits of construction, and for trees, shrubs
and vegetation not designated for removal. The Contractor's liability for tree and shrub
damage will be based on the appraised value, not replacement value, and shall include the
cost of appraisal by a qualified arborist.
3.03EXISTING STRUCTURES AND PROPERTY:
A.Remove existing signs and posts within the construction area as directed by the Engineer.
All permanent traffic signs will be removed, stored, and replaced by the City of Iowa City.
Contractor shall provide 48 hour minimum advance notice for sign removal and for sign
replacement. Permanent signs will be replaced prior to concrete pours.
B.Move mailboxes to a location approved by the Engineer prior to closing road. Salvage and
store any unique supports for mailboxes. Restore mailboxes and their supports to their prior
location and condition when road is reopened.
Rohrbach Associates PCSITE CLEARING
RAPC No.121331 10 00-1
The Chauncey –Schematic Design Development
Iowa City, Iowa
3.04EXISTING FENCING:
A.Only fencing designated bythe Engineer shall be removed.
B.Sections of fence removed for construction shall be replaced per the applicable bid item. If
not addressed, replace with new materials.
3.05EXISTING UTILITIES:
A.Contact appropriate utility representative to verify the presence and location of buried utilities
in the construction area.
3.06EROSION CONTROL:
A.Comply with Iowa City Code and Section 02270, Slope Protection and Erosion Control.
END OF SECTION
Rohrbach Associates PCSITE CLEARING
RAPC No.121331 10 00-2
The Chauncey –Schematic Design Development
Iowa City, Iowa
SECTION 31 20 00
EARTHWORK
PART 1 GENERAL
1.01SUMMARY:
A.Excavating, placing, stabilizing and compacting earth, including trench and rock excavation,
addition of borrow and backfill, disposal of excavated material, and topsoil, strip, salvage
and spread.
1.02REFERENCES:
A.IDOT Standard Specifications.
1.03QUALITY ASSURANCE:
A.Whenever a percentage of compaction is indicated or specified, use percent of maximum
density at optimum moisture as determined by ASTM D698-91, unless noted otherwise.
B.Borrow sites and materials shall be approved by the Engineer prior to use.
PART 2 PRODUCTS
2.01MATERIALS:
A.Granular backfill material shall consist of Class A Crushed Stone, IDOT Standard
Specification Section 4120.04 and Section 4109, Gradation No. 11.
PART 3 EXECUTION
3.01TECHNIQUES:
A.Except as amended in this document, the work in this section will conform with the following
divisions and sections of theIDOT Standard Specifications:
Division 21. Earthwork, Subgrades and Subbases.
Allsections
Division 24. Structures.
Section 2402. Excavation for Structures.
3.02TOPSOIL:
A.Strip and stockpile topsoil from lawn, grass, and crop areas for surface restoration and
landscaping work. Strip topsoil to a uniform depth to provide sufficient quantity of material
for placement of a minimum of 9 inches of topsoil for surface restoration and landscaping.
Protect topsoil from mixture with other materials such as aggregate and from erosion.
Removal of topsoil from the site is not permitted.
3.03DRAINAGE AND DEWATERING:
A.Provide and maintain ample means and devices (including spare units kept ready for
immediate use in case of breakdowns) to intercept and/or remove promptly and dispose
properly of all water entering trenches and otherexcavations. Keep such excavations dry
until the structures, pipes, and appurtenances to be built therein have been completed to
such extent that they will not be floated or otherwise damaged.
B.Dispose of all pumped or drained water without undue interference to other work, or causing
damage to pavements, other surfaces, or property. Provide suitable temporary pipes,
flumes, or channels for water that may flowalong or across the work site.
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C.Take all precautions necessary to prevent damage to the work by rain or by water entering
the site, whether water entrybe overland or by groundwater.
3.04TRENCH EXCAVATION:
A.General
1.Excavate trench by machinery to, or just below, designated subgrade when pipe is
to be laid in granular bedding or concrete cradle, provided that material remaining at
bottom of trench is only slightly disturbed.
2.Do not excavate lower part of trenches by machinery to subgrade when pipe is to
be laid directly on bottom of trench. Remove last of material to be excavated by use
of hand tools, just before placing pipe. Hand shape bell holes and form a flat or
shaped bottom, true to grade, so that pipe will have a uniform and continuous
bearing. Support on firm and undisturbed material between joints, except for limited
areas where use of pipe slings have disturbed bottom.
B.Protection
1.Barricade and fence open excavations or depressions resulting from work during
non-working hours and when not working in immediate area.
C.Trench Width
1.Make pipe trenches as narrowas practicable and safe. Make every effort to keep
sides of trenches firm and undisturbed until backfilling has been completed and
consolidated.
2.Excavate trenches with vertical sides between elevation of center of pipe and
elevation 1 foot above topof pipe.
3.Refer to plans for allowable trench widths within the pipe envelope for various types,
sizes and classes of pipe.
D.Trench Excavation in Fill
1.Place fill material to final grade or to a minimum height of 6 feet above top of pipe
when pipe is to be laid in embankment or other recently filled areas. Take particular
care to ensure maximum consolidation of material under pipe location. Excavate
pipe trench as though in undisturbed material.
E.Excavation Near Existing Structures
1.Discontinue digging by machinery when excavation approaches pipes, conduits, or
other underground structures. Continue excavation by use of hand tools.
2.Excavate exploratory pits when location of pipe or other underground structure is
necessary for doing work properly.
F.Disposal of Unsuitable Soil
1.The Contractor shall notify the Engineer and Iowa Department of Natural Resources
(DNR) if soil contamination is found or suspected during excavation.
2.Soil disposal and remediation method shallbe an option outlined in the IDOT
Construction Manual Section 10.22, and approved by the Iowa DNR and City. The
Contractor is not to proceed with soil removal and remediation measures until
instructed by the Engineer.
3.Disposal site to be provided bythe Contractor and approvedby the Engineer and
Iowa DNR.
4.Contractor is responsible for completing and filing all necessary Federal, State and
local government agency forms and applications.
G.Care of Vegetation and Property
1.Use excavating machinery and cranes of suitable type and operate with care to
prevent injury to trees, particularly to overhanging branches and limbs and
underground root systems.
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2.All branch, limb, and root cuttings shall be avoided. When required, they shall be
performed smoothly and neatly without splitting or crushing. Trim injured portions
by use of a chainsaw or loppers for branches, or an ax when working with roots. Do
not leave frayed, crushed, or torn edges on any roots 1" or larger in diameter or on
any branches. Frayed edges shall be trimmed with a utility knife. Do not use tree
paint or wound dressing. If conflicts with large roots and branches are anticipated,
notify the Engineer.
3.No construction materials and/or equipment are to be stored, piled,or parked within
the trees' drip line.
4.Excavators and loaders used on brick surfaces shall be limited to those with
rubberized tracks or rubber tires.
5.Do not use or operate tractors, bulldozers, or other equipment on paved surfaces
when treads or wheels can cut or damage such surfaces.
6.Restore all surfaces which have been damaged by the Contractor's operations to a
condition at least equal to that in which they were found before work commenced.
Use suitable materials and methods for restoration.
7.Aerate all grassed and planter areas compacted by construction activities.
8.Utility lines, including drainage tiles, encountered shall be restored in one of the
following ways:
a.Repair or otherwise reconnect the utility across trench after trench has
been backfilled, provided adequate drainage gradient is maintained, if
applicable.
b.Connect drainage tiles to nearest storm sewer.
The Contractor shall document the location and elevation of any utility lines
encountered. The Contractor shall notify the Engineer whenever a utility is
encountered and submit the proposed method of restoring the utility for review and
approval.
All utility repairs shall be made prior to backfilling the trench.
H.Water Services
1.Permanent copperwater service lines which are damaged (cut, nicked, bent,
crimped, crushed, etc.) shall be replaced from the water main to the curb box with
new copper service pipe, without any joints. The cost for this work shall be at the
Contractor’s expense.
2.Inany excavation where existing lead or galvanized iron water services are in the
excavation or disturbed area, the Contractor shall replace the existing lead or
galvanized piping with new 1-inch or larger copper water service pipe from the water
main to the curb box. The Contractor will be paid per the applicable bid item. If
there is no bid item, the unit price for the replacement of the water service shall be
negotiated prior to commencement of the work.
3.When water service is disrupted, the Contractor shall make a reasonable attempt to
restore the service within two hours.
4.Water service pipe shall be type k soft copper.
3.05ROCK EXCAVATION:
A.Rock excavation will be considered Class 12 Excavation as defined in IDOT Standard
Specification Section 2102.02.
B.Explosives shall not be used for rock excavation.
3.06BACKFILLING:
A.General
1.Do not place frozen materials in backfill or place backfill upon frozen material.
Remove previously frozen material or treat as requiredbefore new backfill is placed.
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B.Backfilling Excavations
1.Begin backfilling as soon as practicable and proceed until complete.
2.Material and Compaction
a.Paved Areas: Under and within 5 feet of paved surfaces, including streets,
sidewalks and driveways, backfill shall be Class A crushed stone placed in
one foot lifts compacted to 95% Standard Proctor Density. The top 12
inches directly below paved surfaces shall be Class A crushed stone
compacted to 98% Standard Proctor Density. If under pavement, backfill to
bottom of the subgrade. If not under pavement, backfill to within12 inches
of finished surface.
b.All other areas: Backfill shall consist of suitable job excavated material
placed in one foot lifts compacted to 90% Standard Proctor Density. If
excavated material is unsuitable, backfill with Class A crushed stone to
within12 inches of finished surface.
c.Do not place stone or rock fragment larger than 2 inches within 2 feet of
pipe nor larger than 12 inches in backfill. Do not drop large masses of
backfill material into trench.
C.Backfilling Around Structures
1.Do not place backfill against or on structures until they have attained sufficient
strength to support the loads, including construction loads, to which they will be
subjected. Avoid unequal soil pressure by depositing material evenly around
structure.
2.Backfill shall consist of Class A crushed stone placed in one foot lifts compacted to
95% Standard Proctor Density unless otherwise indicated or specified.
3.07UNAUTHORIZED EXCAVATION:
A.When the bottom of any excavation is taken out beyond the limits indicated or specified,
backfill, at Contractor's expense, with Class A crushed stone compacted to 95% Standard
Proctor Density.
END OF SECTION
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Exterior Improvements
32
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SECTION 32 13 13
PORTLAND CEMENT CONCRETE PAVING
PART 1 GENERAL
1.01SUMMARY:
A.Furnish labor, materials, tools and equipment to prepare, install, shape, trim and compact
subgrades to receive Portland Cement Concrete paving.
B.Furnish labor, materials, tools and equipment to form, place, reinforce, finish, joint and cure
Portland Cement Concrete roadways, parking area slabs, driveways, and sidewalks at the
locationsand grades noted on the plans.
1.02REFERENCES:
A.IDOT Standard Specifications.
1.03QUALITY ASSURANCE:
A.Use adequate numbers of skilled workers who are thoroughly trained and experienced in the
necessary crafts and who are completely familiar with the specified requirements and the
methods needed for proper performance of the work inthis section.
B.Quality testing:
1.Compressive Strength Tests.
2.Entrained Air.
3.Slump.
4.Density Tests of Base and Subgrade.
PART 2 PRODUCTS
2.01MATERIALS:
A.Except as amended in this document, the materials in this section will conform with the
following divisions and sections of the IDOT Standard Specifications:
Division 41. Construction Materials.
Sections 4101 through 4122.
B.Aggregate durability class for all Portland Cement Concrete paving shall be Class 3.
PART 3 -EXECUTION
3.01TECHNIQUES:
A.Except as amended in this document, the work in this section will conform with the following
divisions and sections of the IDOT Standard Specifications:
Division 21. Earthwork, Subgrades and Subbases.
Section 2111. Granular Subbase.
Division 22. Base Courses.
Section 2201. Portland Cement Concrete Base.
Section 2212. Base Repair.
Section 2213. Base Widening.
Division 23. Surface Courses.
Section 2301. Portland Cement Concrete Pavement.
Section 2302. Portland Cement Concrete Pavement Widening.
Section 2310. Bonded Portland Cement Concrete Overlay.
Section 2316. Pavement Smoothness.
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Division 25. Miscellaneous Construction.
Section 2512. Portland Cement Concrete Curb and Gutter.
Section 2515. Removal and Construction of Paved Driveways.
Section 2517. Concrete Header Slab.
Section 2529. Full Depth Finish Patches.
Section 2530. Partial Depth Finish Patches.
3.02CURING AND PROTECTION OF PAVEMENT:
A.Curing compound shall be applied immediately following finishing of the concrete, including
back of curb.
3.03ENVIRONMENTAL REQUIREMENTS:
A.When concrete is being placed in cold weather and temperatures may be expected to drop
below 35°F, the following requirements must be met for concrete less than 36 hours old:
Covering
24 Hour Temperature Forecast
Minimum 35-32° FOne layer plastic or burlap.
Minimum 31-25° FOne layer plastic and one layer burlap or two
layers burlap.
Below 25° FCommercial insulating material approved by the
Engineer.
B.Concrete shall be protected from freezing temperatures until it is at least five days old.
C.Concrete damaged by cold weather shall be removed and replaced at the Contractor's
expense.
D.Maximum allowable concrete temperature shall be 90° F.
E.If concrete is placed when the temperature of the concrete could exceed 90° F, the
Contractor shall employ effective means, such as precooling of aggregates and/or mixing
water, as necessary to maintain the temperature of theconcrete as it is placed below 90° F.
3.04OPENING TO TRAFFIC:
A.Opening to traffic, including Contractor's vehicles, will not be permitted until the compressive
strength of 6" dia. x 12" cylinders is at least 3,000 lb. per square inch.
B.All joints in the pavement shall be cleaned and sealed prior to opening the street(s) to traffic
of any kind.
C.Opening to traffic shall not constitute final acceptance.
3.05COMPLETION OF WORK:
A.When traffic is allowed upon the pavement, the Contractor shall begin remaining work and
clean up. All streets and sidewalks shall be finished and opened to thepublic as soon as
practicable.
B.Contractor shall notify the Engineer if weather conditions make it difficult to use Class M
concrete, when specified.
END OF SECTION
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SECTION 321400 - UNIT PAVING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. Concrete pavers set in bituminous setting beds.
B. Related Requirements:
1. Section 321313 "Concrete Paving" for concrete base under unit pavers
1.3 ACTION SUBMITTALS
A. Product Data: For materials other than water and aggregates.
B. Product Data: For the following:
1. Pavers.
2. Bituminous setting materials.
3. Edge restraints.
C. Sieve Analyses: For aggregate setting-bed materials, according to ASTM C 136.
D. Samples for Initial Selection: For each type of unit paver indicated
1. Joint materials involving color selection.
2. Exposed edge restraints involving color selection.
E. Samples for Verification: For full-size units of each type of unit paver indicated
1. Joint materials.
2. Exposed edge restraints.
3. Precast concrete curbs.
4. Granite curbs.
1.4 INFORMATIONAL SUBMITTALS
A. Adhesion and Compatibility Test Reports: From latex-additive manufacturer for mortar and grout
containing latex additives.
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B. Material Certificates: For unit pavers. Include statements of material properties indicating
compliance with requirements, including compliance with standards. Provide for each type and
size of unit.
C. Product Test Reports: Based on evaluation of comprehensive tests performed by a qualified
testing agency, for unit pavers, indicating compliance with requirements.
1. For solid interlocking paving units, include test data for freezing and thawing according to
ASTM C 67.
1.5 QUALITY ASSURANCE
A. Mockups: Build mockups to verify selections made under Sample submittals, to demonstrate
aesthetic effects, and to set quality standards for materials and execution.
1. Subject to compliance with requirements, approved mockups may become part of the
completed Work if undisturbed at time of Substantial Completion.
2. Mock Up to be 4’ x 4’ area
1.6 DELIVERY, STORAGE, AND HANDLING
A. Store pavers on elevated platforms in a dry location. If units are not stored in an enclosed
location, cover tops and sides of stacks with waterproof sheeting, securely tied.
B. Store cementitious materials on elevated platforms, under cover, and in a dry location. Do not
use cementitious materials that have become damp.
C. Store aggregates where grading and other required characteristics can be maintained and
contamination avoided.
D. Store liquids in tightly closed containers protected from freezing.
E. Store asphalt cement and other bituminous materials in tightly closed containers.
1.7 FIELD CONDITIONS
A. Cold-Weather Protection: Do not use frozen materials or materials mixed or coated with ice or
frost. Do not build on frozen subgrade or setting beds. Remove and replace unit paver work
damaged by frost or freezing.
B. Weather Limitations for Bituminous Setting Bed:
1. Install bituminous setting bed only when ambient temperature is above 40 deg F (4
deg C) and when base is dry.
2. Apply asphalt adhesive only when ambient temperature is above 50 deg F (10 deg C)
and when temperature has not been below 35 deg F (2 deg C) for 12 hours immediately
before application. Do not apply when setting bed is wet or contains excess moisture.
C. Weather Limitations for Mortar and Grout:
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1. Cold-Weather Requirements: Comply with cold-weather construction requirements
contained in TMS 602/ACI 530.1/ASCE 6.
2. Hot-Weather Requirements: Comply with hot-weather construction requirements
contained in TMS 602/ACI 530.1/ASCE 6. Provide artificial shade and windbreaks and
use cooled materials as required. Do not apply mortar to substrates with temperatures of
100 deg F (38 deg C) and higher.
a. When ambient temperature exceeds 100 deg F (38 deg C), or when wind velocity
exceeds 8 mph (13 km/h) and ambient temperature exceeds 90 deg F (32 deg C),
set pavers within 1 minute of spreading setting-bed mortar.
PART 2 - PRODUCTS
2.1 MANUFACTURERS
A. Source Limitations: Obtain each type of unit paver, joint material, and setting material from
single source with resources to provide materials and products of consistent quality in
appearance and physical properties.
2.2 CONCRETE PAVERS
A. Concrete Pavers: Solid interlocking paving units complying with ASTM C 936/C 936M and
resistant to freezing and thawing when tested according to ASTM C 67, made from normal-
weight aggregates.
1. Wausau Tile
2. Thickness: 2-3/8 inches
3. Face Size and Shape: 4-by-8-inch rectangle.
4. Face Size and Shape: 12-by-24-inch rectangle
5. Color: As selected by Landscape Architect from manufacturer's full range
2.3 EDGE RESTRAINTS
A. Steel Edge Restraints: Manufacturer's standard painted steel edging 1/4 inch thick by 2 1/2" x 3
1/4" inches
B. Job-Built Concrete Edge Restraints: Comply with requirements in Section 033000 "Cast-in-
Place Concrete" for normal-weight, air-entrained, ready-mixed concrete with minimum 28-day
compressive strength of 3000 psi (20 MPa).
2.4 ACCESSORIES
A. Cork Joint Filler: Preformed strips complying with ASTM D 1752, Type II.
B. Compressible Foam Filler: Preformed strips complying with ASTM D 1056, Grade 2A1.
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2.5 BITUMINOUS SETTING-BED MATERIALS
A. Primer for Base: ASTM D 2028/D 2028M, cutback asphalt, grade as recommended by unit
paver manufacturer.
B. Fine Aggregate for Setting Bed: ASTM D 1073, No. 2 or No. 3.
C. Asphalt Cement: ASTM D 3381/D 3381M, Viscosity Grade AC-10 or Grade AC-20.
D. Neoprene-Modified Asphalt Adhesive: Paving manufacturer's standard adhesive consisting of
oxidized asphalt combined with 2 percent neoprene and 10 percent long-fibered mineral fibers
containing no asbestos.
E. Sand for Joints: Fine, sharp, washed, natural sand or crushed stone with 100 percent passing
No. 16 (1.18-mm) sieve and no more than 10 percent passing No. 200 (0.075-mm) sieve.
1. Provide sand of color needed to produce required joint color.
2.6 BITUMINOUS SETTING-BED MIX
A. Mix bituminous setting-bed materials at an asphalt plant in approximate proportion, by weight, of
7 percent asphalt cement to 93 percent fine aggregate unless otherwise indicated. Heat mixture
to300 deg F (149 deg C).
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine surfaces indicated to receive unit paving, with Installer present, for compliance with
requirements for installation tolerances and other conditions affecting performance.
B. Where unit paving is to be installed over waterproofing, examine waterproofing installation, with
waterproofing Installer present, for protection from paving operations, including areas where
waterproofing system is turned up or flashed against vertical surfaces.
C. Proceed with installation only after unsatisfactory conditions have been corrected
3.2 PREPARATION
A. Remove substances from concrete substrates that could impair mortar bond, including curing
and sealing compounds, form oil, and laitance.
B. Sweep concrete substrates to remove dirt, dust, debris, and loose particles.
C. Proof-roll prepared subgrade according to requirements in Section 312000 "Earth Moving" to
identify soft pockets and areas of excess yielding. Proceed with unit paver installation only after
subbaseandbase
deficient subgrades have been corrected and are ready to receive \[\] \[\] \[\]
course for unit pavers.
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3.3 INSTALLATION, GENERAL
A. Do not use unit pavers with chips, cracks, voids, discolorations, or other defects that might be
visible or cause staining in finished work.
B. Mix pavers from several pallets or cubes, as they are placed, to produce uniform blend of colors
and textures.
C. Cut unit pavers with motor-driven masonry saw equipment to provide clean, sharp, unchipped
edges. Cut units to provide pattern indicated and to fit adjoining work neatly. Use full units
without cutting where possible. Hammer cutting is not acceptable.
1. For concrete pavers, a block splitter may be used.
D. Handle protective-coated brick pavers to prevent coated surfaces from contacting backs or
edges of other units. If, despite these precautions, coating does contact bonding surfaces of
brick, remove coating from bonding surfaces before setting brick.
E. Joint Pattern: As indicated
F. Tolerances: Do not exceed\[ 1/16-inch (1.6-mm) unit-to-unit offset from flush (lippage) nor 1/8
inch in 24 inches (3 mm in 600 mm) and\] 1/4 inch in 10 feet (6 mm in 3 m) from level, or
indicated slope, for finished surface of paving.
G. Expansion and Control Joints: Provide for sealant-filled joints at locations and of widths
indicated. Provide compressible foam filler as backing for sealant-filled joints unless otherwise
indicated\]. Install joint filler before setting pavers. Sealant materials and installation are specified
in Section 079200 "Joint Sealants."
H. Expansion and Control Joints: Provide cork joint filler at locations and of widths indicated. Install
joint filler before setting pavers. Make top of joint filler flush with top of pavers.
I. Provide edge restraints as indicated. Install edge restraints before placing unit pavers.
1. Install edge restraints to comply with manufacturer's written instructions. Install stakes at
intervals required to hold edge restraints in place during and after unit paver installation.
2. For metal edge restraints with top edge exposed, drive stakes at least 1 inch (25 mm)
below top edge.
3. Install job-built concrete edge restraints to comply with requirements in Section 033000
"Cast-in-Place Concrete."
4. Where pavers set in mortar bed are indicated as edge restraints for pavers set in
aggregate setting bed, install pavers set in mortar and allow mortar to cure before placing
aggregate setting bed and remainder of pavers. Cut off mortar bed at a steep angle so it
will not interfere with aggregate setting bed.
5. Where pavers embedded in concrete are indicated as edge restraints for pavers set in
aggregate setting bed, install pavers embedded in concrete and allow concrete to cure
before placing aggregate setting bed and remainder of pavers. Hold top of concrete
below aggregate setting bed.
J. Provide steps made of pavers as indicated. Install paver steps before installing adjacent pavers.
1. Where pavers set in mortar bed are indicated for steps constructed adjacent to pavers
set in aggregate setting bed, install steps and allow mortar to cure before placing
aggregate setting bed and remainder of pavers. Cut off mortar bed at a steep angle so it
will not interfere with aggregate setting bed.
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3.4 BITUMINOUS SETTING-BED APPLICATIONS
A. Apply primer to concrete slab or binder course immediately before placing setting bed.
B. Prepare for setting-bed placement by locating 3/4-inch- (19-mm-) deep control bars
approximately 11 feet (3.3 m) apart and parallel to one another, to serve as guides for striking
board. Adjust bars to subgrades required for accurate setting of paving units to finished grades
indicated.
C. Place bituminous setting bed where indicated, in panels, by spreading bituminous material
between control bars. Spread mix at a minimum temperature of 250 deg F (121 deg C). Strike
setting bed smooth, firm, even, and not less than 3/4 inch (19 mm) thick. Add fresh bituminous
material to low, porous spots after each pass of striking board. After each panel is completed,
advance first control bar to next position in readiness for striking adjacent panels. Carefully fill
depressions that remain after removing depth-control bars.
1. Roll setting bed with power roller to a nominal depth of 3/4 inch (19 mm). Adjust
thickness as necessary to allow accurate setting of unit pavers to finished grades
indicated. Complete rolling before mix temperature cools to 185 deg F (85 deg C).
D. Apply neoprene-modified asphalt adhesive to cold setting bed by squeegeeing or troweling to a
uniform thickness of 1/16 inch (1.6 mm). Proceed with setting of paving units only after adhesive
is tacky and surface is dry to touch.
E. Place pavers carefully by hand in straight courses, maintaining accurate alignment and uniform
top surface. Protect newly laid pavers with plywood panels on which workers can stand.
Advance protective panels as work progresses, but maintain protection in areas subject to
continued movement of materials and equipment to avoid creating depressions or disrupting
alignment of pavers. If additional leveling of paving is required, and before treating joints, roll
paving with power roller after sufficient heat has built up in the surface from several days of hot
weather.
F. Joint Treatment: Place unit pavers with hand-tight joints. Fill joints by sweeping sand over
paved surface until joints are filled. Remove excess sand after joints are filled.
3.5 REPAIRING, POINTING, AND CLEANING
A. Remove and replace unit pavers that are loose, chipped, broken, stained, or otherwise
damaged or that do not match adjoining units. Provide new units to match adjoining units and
install in same manner as original units, with same joint treatment and with no evidence of
replacement.
B. Pointing: During tooling of joints, enlarge voids or holes and completely fill with grout. Point
joints at sealant joints to provide a neat, uniform appearance, properly prepared for sealant
application.
C. Cleaning: Remove excess grout from exposed paver surfaces; wash and scrub clean.
1. Remove temporary protective coating as recommended by coating manufacturer and as
acceptable to paver and grout manufacturers.
2. Do not allow protective coating to enter floor drains. Trap, collect, and remove coating
material.
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END OF SECTION 321400
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SECTION 321813 - SYNTHETIC GRASS SURFACING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section includes synthetic grass surfacing.
B. Related Requirements:
1. Section 312000 "Earth Moving" for preparation, compaction, and grading of granular
base.
2. Section 334600 "Subdrainage" for subsurface drainage system.
1.3 PREINSTALLATION MEETINGS
Project siteInsert location
A. Preinstallation Conference: Conduct conference at \[\] <>.
1.4 ACTION SUBMITTALS
A. Product Data: For each type of product.
B. Shop Drawings: For synthetic grass surfacing.
1. Include sections and details.
2. Show locations of seams and method of seaming.
3. Show layout of game lines, numbers, and letters. Indicate application method of each line
and marking.
4. Show location and layout of team logo/graphics.
C. Samples: For each type of synthetic grass surfacing indicated.
1. Turf Fabric: 12 inches
2. Shock-Attenuation Pad: 12 inches
3. Seam Sample: 24 inches square with seam centered in sample.
1.5 INFORMATIONAL SUBMITTALS
A. Qualification Data: For Installer
B. Product Test Reports: For each synthetic grass surfacing assembly.
C. Field quality-control reports.
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D. Sample Warranties: For special warranties.
1.6 CLOSEOUT SUBMITTALS
A. Maintenance Data: For synthetic grass surfacing, including maintenance cleaning instructions,
to include in maintenance manuals.
1.7 MAINTENANCE MATERIAL SUBMITTALS
A. Furnish extra materials that match products installed and that are packaged with protective
covering for storage and identified with labels describing contents.
1. Turf Fabric: Minimum of 300 sq. ft.
2. Seaming Tape and Adhesive: One roll ofseaming tape and one gallon of adhesive.
3. One new set of maintenance tools, of type recommended by synthetic grass surfacing
manufacturer for installation.
1.8 QUALITY ASSURANCE
A. Installer Qualifications: An entity that employs installers and supervisors who are trained and
approved by manufacturer.
1.9 DELIVERY, STORAGE, AND HANDLING
A. Store materials in location and manner to allow installation of synthetic grass surfacing without
excess disturbance of granular base.
1.10 WARRANTY
A. Special Warranty: Manufacturer agrees to repair or replace synthetic grass surfacing that fails in
materials or workmanship within specified warranty period.
1. Failures include, but are not limited to, the following:
a. Deterioration and excessive wear.
b. Deterioration from UV light.
c. Excessive loss of shock attenuation.
d. Seam separation, including game lines and markings.
812Insert number
2. Warranty Period: \[\] \[\] <> years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 SYNTHETIC GRASS SURFACING
A. Synthetic Grass Surfacing: Complete surfacing system, consisting of synthetic yarns bound to
water-permeable backing
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B. Turf Fabric: Woven turf fabric with multicolored fiber and UV resistance, complying with the
following manufactured by SYNLawn 2680 Abutment Road SE, Dalton, GA 30721 (866)
SYNLAWN, Website: www.synlawn.com , Local Contact SYNLawn – Nebraska & Iowa Installer,
14706 Giles Rd., Omaha, NE 68138 (800)877-6787 Website: www.synlawn360.com
Model No.: SYNLawn Roofdeck Plantinum
1. Yarn Fiber: Grass Zone: EPN Nylon with HeatBlock technology
2. Pile Weight: 84 oz./sq. yd. according to ASTM D 5848.
3. Pile Height: 1.75” inches according to ASTM D 5823.
4. Drain Rate: 30 inches per hour
C. Backing: Manufacturer's standard woven or nonwoven polypropylene primary backing with
urethane-coated secondary backing; provide perforations or drainage channels sufficient to
meet permeability indicated.
D. Seaming Method: Adhesive
2.2 MATERIALS
A. Seam Adhesive: One- or two-part urethane, recommended or approved by synthetic grass
surfacing manufacturer, and suitable for ambient conditions at time of installation.
B. Seam Tape: Synthetic grass manufacturer's recommended seam tape, minimum 12 inches
wide for inlaid game lines.
C. Seaming Cord: Seaming cord or thread, recommended by the synthetic grass surfacing
manufacturer.
D. Shock-Attenuation Pad:
PART 3 - EXECUTION
3.1 EXAMINATION
A. Examine base and other conditions, with Installer present, for compliance with requirements for
installation tolerances, permeability, and other conditions affecting performance of the Work.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Avoid disturbance of base during installation of shock-attenuation pad and turf fabric.
B. Shock-Attenuation Pad Installation: Roll out pad and allow to relax a minimum of six hours prior
to final fit and trim. Stagger head seams between adjacent rows. Fit seams snugly without
stretching or forcing.
C. Roll out turf fabric and allow to relax at least four hours prior to seaming.
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D. Provide seams flat and snug, with no gaps or fraying. Remove yarns that are trapped within
seams. Attach turf fabric to perimeter restraint system as recommended by the manufacturer.
E. Repair loose seams and bubbles formed due to expansion of turf fabric prior to installation of
infill.
3.3 FIELD QUALITY CONTROL
A. Testing Agency: Engage a qualified testing agency to perform tests and inspections.
B. Perform the following tests and insections:
1. Permeability: 30 in./h of rainfall capacity according to ASTM F 2898 or EN 15330-1.
3.4 DEMONSTRATION
A. Train Owner's maintenance personnel in proper maintenance procedures for synthetic grass
surfacing.
END OF SECTION 321813
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SECTION 329200 - TURF
PART 1 - GENERAL
1.01 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including other Supplemental Specification
Sections, apply to this Section.
1.02 SUMMARY
A. Section Includes:
1. Sodding.
B. Related Sections:
1. Division 32 Section 329300 - "Plants".
1.03 DEFINITIONS
A. Duff Layer: The surface layer of native topsoil that is composed of mostly decayed leaves,
twigs, and detritus.
B. Finish Grade: Elevation of finished surface of planting soil.
C. Manufactured Topsoil: Soil produced off-site by homogeneously blending mineral soils or sand
with stabilized organic soil amendments to produce topsoil or planting soil.
D. Pesticide: A substance or mixture intended for preventing, destroying, repelling, or mitigating a
pest. This includes insecticides, miticides, herbicides, fungicides, rodenticides, and
molluscicides. It also includes substances or mixtures intended for use as a plant regulator,
defoliant, or desiccant.
E. Pests: Living organisms that occur where they are not desired or that cause damage to plants,
animals, or people. These include insects, mites, grubs, mollusks (snails and slugs), rodents
(gophers, moles, and mice), unwanted plants (weeds), fungi, bacteria, and viruses.
F. Planting Soil: Standardized topsoil; existing, native surface topsoil; existing, in-place surface
soil; imported topsoil; or manufactured topsoil that is modified with soil amendments and
perhaps fertilizers to produce a soil mixture best for plant growth.
G. Subgrade: Surface or elevation of subsoil remaining after excavation is complete, or top
surface of a fill or backfill before planting soil is placed.
H. Subsoil: All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic
matter and soil organisms.
I. Surface Soil: Soil that is present at the top layer of the existing soil profile at the Project site. In
undisturbed areas, the surface soil is typically topsoil, but in disturbed areas such as urban
environments, the surface soil can be subsoil.
1.04 SUBMITTALS
A. Product Data: For each type of product indicated.
1. Pesticides and Herbicides: Include product label and manufacturer's application
instructions specific to this Project.
B. Certification of Grass Seed: From seed vendor for each grass-seed monostand or mixture
stating the botanical and common name, percentage by weight of each species and variety,
and percentage of purity, germination, and weed seed. Include the year of production and date
of packaging.
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1. Certification of each seed mixture for turf grass sod. Include identification of source and
name and telephone number of supplier.
C. Qualification Data: For qualified landscape Installer.
D. Product Certificates: For soil amendments and fertilizers, from manufacturer.
E. Material Test Reports: For existing native surface topsoil.
F. Maintenance Instructions: Recommended procedures to be established by Owner for
maintenance of turf during a calendar year. Submit before expiration of required initial
maintenance periods.
1.05 QUALITY ASSURANCE
A. Installer Qualifications: A qualified landscape Installer whose work has resulted in successful
turf establishment.
1. Professional Membership: Installer shall be a member in good standing of either the
Professional Landcare Network or the American Nursery and Landscape Association.
2. Experience: Five years' experience in turf installation in addition to requirements in
Division 01 Section "Quality Requirements."
3. Installer's Field Supervision: Require Installer to maintain an experienced full-time
supervisor on Project site when work is in progress.
4. Personnel Certifications: Installer's shall have certification in at least one of the following
categories from the Professional Landcare Network:
a. Certified Landscape Technician - Exterior, with installation and maintenance
specialty area(s), designated CLT-Exterior.
b. Certified Turfgrass Professional, designated CTP.
c. Certified Turfgrass Professional of Cool Season Lawns, designated CTP-CSL.
5. Maintenance Proximity: Not more than three hours' normal travel time from Installer's
place of business to Project site.
6. Pesticide Applicator: State licensed, commercial.
B. Preinstallation Conference: Conduct conference at Project site.
1.06 DELIVERY, STORAGE, AND HANDLING
A. Sod: Harvest, deliver, store, and handle sod according to requirements in "Specifications for
Turfgrass Sod Materials" and "Specifications for Turfgrass Sod Transplanting and Installation"
in TPI's "Guideline Specifications to Turfgrass Sodding." Deliver sod in time for planting within
24 hours of harvesting. Protect sod from breakage and drying.
B. Bulk Materials:
1. Do not dump or store bulk materials near structures, utilities, walkways and pavements,
or on existing turf areas or plants.
2. Provide erosion-control measures to prevent erosion or displacement of bulk materials,
discharge of soil-bearing water runoff, and airborne dust reaching adjacent properties,
water conveyance systems, or walkways.
3. Accompany each delivery of bulk fertilizers, lime, and soil amendments with appropriate
certificates.
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1.07 PROJECT CONDITIONS
A. Planting Restrictions: Plant during one of the following periods. Coordinate planting periods
with initial maintenance periods to provide required maintenance from date of Substantial
Completion.
1. Seeding window for turf type seed mixes:
a. Spring Planting: March 1 – May 31.
b. Fall Planting: August 10 – September 30.
B. Weather Limitations: Proceed with planting only when existing and forecasted weather
conditions permit planting to be performed when beneficial and optimum results may be
obtained. Apply products during favorable weather conditions according to manufacturer's
written instructions.
1.08 MAINTENANCE SERVICE
A. Initial Turf Maintenance Service: Provide full maintenance by skilled employees of landscape
Installer. Maintain as required in Part 3. Begin maintenance immediately after each area is
planted and continue until acceptable turf is established but for not less than the following
periods:
1. Sodded Turf: Minimum of 30 days from date of planting completion or Substantial
Completion.
PART 2 - PRODUCTS
2.01 TURFGRASS SOD
A. Sod shall be RTF (U.S. Patent NO. 6,677,507) as produced by members of the RTF Turf
Producers Association. Prior to installation, the contractor shall provide written submittal with
verification from the RTF Turf Producers Association that the selected local grower is licensed
to produce and sell RTF sod.
1. In addition, an “RTF SOD CERTIFICATE” from the Association verifying the authenticity
of the sod shall be provided with delivery. Deliveries without the certificate will be
rejected.
2. Contact info for the name of a local grower:
RTF Turf Producers Association
P.O. Box 202
Mead, NE 68041
Ph: 402-624-6385
E-mail: info@rtfsod.com
Website: www.rtfsod.com
2.02 FERTILIZERS
A. Sod: Comply with Iowa DOT Article 4169.03.
2.03 PLANTING SOILS
A. Planting Soil: Existing, native surface topsoil formed under natural conditions with the duff
layer retained during excavation processand stockpiled on-site. Verify suitability of native
surface topsoil to produce viable planting soil. Clean soil of roots, plants, sod, stones, clay
lumps, and other extraneous materials harmful to plant growth.
2.04 MULCHES
A. Straw Mulch: Provide air-dry, clean, mildew- and seed-free, salt hay or threshed straw of wheat
or rye.
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2.05 PESTICIDES
A. Pre-Emergent Herbicide (Selective and Non-Selective): Effective for controlling the germination
or growth of weeds within planted areas at the soil level directly below the mulch layer.
2.06 EROSION-CONTROL MATERIALS
A. Erosion-Control Blankets: Biodegradable mat with a photodegradable plastic mesh that meets
or exceeds DS75 by North American Green; Ph. 800-772-2040. Include manufacturer's
recommended steel wire staples, 6 inches long, spaced 18 inches on center maximum.
PART 3 - EXECUTION
3.01 EXAMINATION
A. Examine areas to be planted for compliance with requirements and other conditions affecting
performance.
1. Verify that no foreign or deleterious material or liquid such as paint, paint washout,
concrete slurry, concrete layers or chunks, cement, plaster, oils, gasoline, diesel fuel,
paint thinner, turpentine, tar, roofing compound, or acid has been deposited in soil within
a planting area.
2. Do not mix or place soils and soil amendments in frozen, wet, or muddy conditions.
3. Suspend soil spreading, grading, and tilling operations during periods of excessive soil
moisture until the moisture content reaches acceptable levels to attain the required
results.
4. Uniformly moisten excessively dry soil that is not workable and which is too dusty.
B. Proceed with installation only after unsatisfactory conditions have been corrected.
C. If contamination by foreign or deleterious material or liquid is present in soil within a planting
area, remove the soil and contamination as directed by Architect and replace with new planting
soil.
3.02 PREPARATION
A. Protect structures, utilities, sidewalks, pavements, and other facilities, trees, shrubs, and
plantings from damage caused by planting operations.
1. Protect grade stakes set by others until directed to remove them.
B. Install erosion-control measures to prevent erosion or displacement of soils and discharge of
soil-bearing water runoff or airborne dust to adjacent properties and walkways.
3.03 TURF AREA PREPARATION
A. Limit turf subgrade preparation to areas to be planted.
B. Newly Graded Subgrades: Loosen subgrade to a minimum depth of 6 inches. Remove stones
larger than 1 inch in any dimension and sticks, roots, rubbish, and other extraneous matter and
legally dispose of them off Owner's property.
1. Apply fertilizer directly to subgrade before loosening.
a. Delay mixing fertilizer with planting soil if planting will not proceed within a few
days.
2. Spread planting soil to a depth of 8 inches but not less than required to meet finish
grades after light rolling and natural settlement. Do not spread if planting soil or
subgrade is frozen, muddy, or excessively wet.
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a. Spread approximately 1/2 the thickness of planting soil over loosened subgrade.
Mix thoroughly into top 4 inches of subgrade. Spread remainder of planting soil.
b. Reduce elevation of planting soil to allow for soil thickness of sod.
C. Finish Grading: Laser Grade planting areas to a smooth, uniform surface plane with loose,
uniformly fine texture. Grade to within plus or minus 1/2 inch of finish elevation at field locations
and within 1 inch for all other turf areas. Roll and rake, remove ridges, and fill depressions to
meet finish grades. Limit finish grading to areas that can be planted in the immediate future.
D. Moisten prepared area before planting if soil is dry. Water thoroughly and allow surface to dry
before planting. Do not create muddy soil.
E. Before planting, obtain Architect's acceptance of finish grading; restore planting areas if eroded
or otherwise disturbed after finish grading.
3.04 PREPARATION FOR EROSION-CONTROL MATERIALS
A. Prepare area as specified in "Turf Area Preparation" Article.
B. For erosion-control mats, install planting soil in two lifts, with second lift equal to thickness of
erosion-control mats. Install erosion-control mat and fasten as recommended by material
manufacturer.
C. Fill cells of erosion-control mat with planting soil and compact before planting.
D. For erosion-control blanket or mesh, install from top of slope, working downward, and as
recommended by material manufacturer for site conditions. Fasten as recommended by
material manufacturer.
E. Moisten prepared area before planting if surface is dry. Water thoroughly and allow surface to
dry before planting. Do not create muddy soil.
3.05 SODDING
A. Sod to be large roll cut with mesh. Mesh to be removed on site prior to sod installation and
disposed of off-site.
B. Lay sod within 24 hours of harvesting. Sod to be rolled parallel to side lines, or “goal to goal”.
Do not lay sod if dormant or if ground is frozen or muddy.
C. Lay sod to form a solid mass with tightly fitted joints. Butt ends and sides of sod; do not stretch
or overlap. Stagger sod strips or pads to offset joints in adjacent courses. Avoid damage to
subgrade or sod during installation. Tamp and roll lightly to ensure contact with subgrade,
eliminate air pockets, and form a smooth surface. Work sifted soil or fine sand into minor
cracks between pieces of sod; remove excess to avoid smothering sod and adjacent grass.
D. Saturate sod with fine water spray within two hours of planting. During first week after planting,
water daily or more frequently as necessary to maintain moist soil to a minimum depth of 1-1/2
inches below sod.
3.06 TURF MAINTENANCE
A. Maintain and establish turf by watering, fertilizing, weeding, mowing, trimming, replanting, and
performing other operations as required to establish healthy, viable turf. Roll, regrade, and
replant bare or eroded areas and re-mulch to produce a uniformly smooth turf. Provide
materials and installation the same as those used in the original installation.
1. Fill in as necessary soil subsidence that may occur because of settling or other
processes. Replace materials and turf damaged or lost in areas of subsidence.
B. Watering: Utilize off site water source.
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1. Schedule watering to prevent wilting, puddling, erosion, and displacement of seed or
mulch. Avoid walking over muddy or newly planted areas.
2. Water turf within irrigated areas at a minimum rate of 1 inchper week, unless otherwise
specified.
C. Mow turf as soon as top growth is tall enough to cut. Repeat mowing to maintain specified
height without cutting more than 1/3 of grass height. Remove no more than 1/3 of grass-leaf
growth in initial or subsequent mowings. Do not delay mowing until grass blades bend over
and become matted. Do not mow when grass is wet. Schedule initial and subsequent
mowings to maintain the following grass height:
1. Mow turf areas to a height of 2 inches.
3.07 SATISFACTORY TURF
A. Turf installations shall meet the following criteria as determined by Landscape Architect:
1. Satisfactory Sodded Turf: At end of maintenance period, a healthy, well-rooted, even-
colored, viable turf has been established, free of weeds, open joints, bare areas, and
surface irregularities.
B. Use specified materials to reestablish turf that does not comply with requirements and continue
maintenance until turf is satisfactory.
3.08 CLEANUP AND PROTECTION
A. Promptly remove soil and debris created by turf work from paved areas. Clean wheels of
vehicles before leaving site to avoid tracking soil onto roads, walks, or other paved areas.
B. Remove non-degraded erosion-control measures after grass establishment period.
END OF SECTION 329200
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SECTION 32 9300 - PLANTS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section Includes:
1. The selection, placement and maintenance of trees, shrubs and groundcovers.
2. Mixing and placement of manufactured planting soils and CU-Structural Soil adjacent to
planting areas.
3. Mulching of planting beds.
B. Related Requirements:
1. Section 32 8400 – Irrigation
2. Section 32 9200 - Turf
1.3 DEFINITIONS
A. Backfill: The earth used to replace or the act of replacing earth in an excavation.
B. Balled and Burlapped Stock: Plants dug with firm, natural balls of earth in which they were
grown, with a ball size not less than diameter and depth recommended by ANSI Z60.1 for type
and size of plant required; wrapped with burlap, tied, rigidly supported, and drum laced with
twine with the root flare visible at the surface of the ball as recommended by ANSI Z60.1.
C. Balled and Potted Stock: Plants dug with firm, natural balls of earth in which they are grown and
placed, unbroken, in a container. Ball size is not less than diameter and depth recommended by
ANSI Z60.1 for type and size of plant required.
D. Container-Grown Stock: Healthy, vigorous, well-rooted plants grown in a container, with a well-
established root system reaching sides of container and maintaining a firm ball when removed
from container. Container shall be rigid enough to hold ball shape and protect root mass during
shipping and be sized according to ANSI Z60.1 for type and size of plant required.
E. Duff Layer: The surface layer of native topsoil that is composed of mostly decayed leaves,
twigs, and detritus.
F. Finish Grade: Elevation of finished surface of planting soil.
G. Manufactured Topsoil: Soil produced off-site by homogeneously blending mineral soils or sand
with stabilized organic soil amendments to produce topsoil or planting soil.
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H. Pesticide: A substance or mixture intended for preventing, destroying, repelling, or mitigating a
pest. Pesticides include insecticides, miticides, herbicides, fungicides, rodenticides, and
molluscicides. They also include substances or mixtures intended for use as a plant regulator,
defoliant, or desiccant. Some sources classify herbicides separately from pesticides.
I. Pests: Living organisms that occur where they are not desired or that cause damage to plants,
animals, or people. Pests include insects, mites, grubs, mollusks (snails and slugs), rodents
(gophers, moles, and mice), unwanted plants (weeds), fungi, bacteria, and viruses.
J. Planting Area: Areas to be planted.
K. Planting Soil: Existing, on-site soil, imported soil, or manufactured soil that has been modified
with soil amendments and perhaps fertilizers to produce a soil mixture best for plant growth.
L. Plant; Plants; Plant Material: These terms refer to vegetation in general, including trees, shrubs,
vines, ground covers, ornamental grasses, bulbs, corms, tubers, or herbaceous vegetation.
M. Root Flare: Also called "trunk flare." The area at the base of the plant's stem or trunk where the
stem or trunk broadens to form roots; the area of transition between the root system and the
stem or trunk.
N. Stem Girdling Roots: Roots that encircle the stems (trunks) of trees below the soil surface.
O. Subgrade: The surface or elevation of subsoil remaining after excavation is complete, or the top
surface of a fill or backfill before planting soil is placed.
P. Subsoil: All soil beneath the topsoil layer of the soil profile, and typified by the lack of organic
matter and soil organisms.
Q. Surface Soil: Soil that is present at the top layer of the existing soil profile at the Project site. In
undisturbed areas, the surface soil is typically topsoil; but in disturbed areas such as urban
environments, the surface soils can be subsoil.
1.4 COORDINATION
A. Coordination with Turf Areas (Lawns): Plant trees, shrubs, and other plants after finish grades
are established and before planting turf areas unless otherwise indicated.
1. When planting trees, shrubs, and other plants after planting turf areas, protect turf areas,
and promptly repair damage caused by planting operations.
1.5 SUBMITTALS
A. Product Data: For each type of product indicated, including soils.
1. Plant Materials: Include quantities, sizes, quality, and sources for plant materials.
2. Plant Photographs: Include color photographs in digital format of each required species
and size of plant material as it will be furnished to Project. Take photographs from an
angle depicting true size and condition of the typical plant to be furnished. Include a scale
rod or other measuring device in each photograph. For species where more than 20
plants are required, include a minimum of three photographs showing the average plant,
the best quality plant, and the worst quality plant to be furnished. Identify each
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photograph with the full scientific name of the plant, plant size, and name of the growing
nursery.
3. Pesticides and Herbicides: Include product label and manufacturer’s application
instructions specific to the Project.
4. Soil test performed by a Soils Lab.
B. Samples for Verification: For each of the following:
1. Shredded Hardwood Mulch: 1 pint volume of each organic mulch required; in sealed
plastic bags labeled with composition of materials by percentage of weight and source of
mulch. Each Sample shall be typical of the lot of material to be furnished; provide an
accurate representation of color, texture, and organic makeup.
C. Product Certificates: For each type of manufactured product, from manufacturer, and complying
with the following:
1. Manufacturer’s certified analysis of standard products.
2. Analysis of other materials by a recognized laboratory made according to methods
established by the Association of Official Analytical Chemists, where applicable.
D. Soil Analysis: For standardized ASTM D 5268 topsoil, existing native surface topsoil, existing in-
place surface soil, and imported or manufactured topsoil.
E. Standard Proctor test for installed soils.
F. Maintenance Instructions: Recommended procedures to be established by Owner for
maintenance of plants during a calendar year. Submit before start of required maintenance
periods.
G. Closeout Submittals:
1. Warranties: Special warranties specified in this Section.
1.6 QUALITY ASSURANCE
A. Installer Qualifications: A qualified landscape installer whose work has resulted in successful
establishment of plants.
1. Professional Membership: Installer shall be a member in good standing of either the
Professional Landcare Network or the American Nursery and Landscape Association.
2. Experience: Five years' experience in landscape installation in addition to requirements in
Division 01 Section “Quality Requirements”.
3. Installer's Field Supervision: Require Installer to maintain an experienced full-time
supervisor on Project site when work is in progress.
4. Personnel Certifications: Installer's field supervisor shall have certification in all of the
following categories from the Professional Landcare Network:
a. Certified Landscape Technician – Exterior, with installation, maintenance, and
irrigation.
5. Pesticide Applicator: State licensed, commercial.
B. Provide quality, size, genus, species, and variety of plants indicated, complying with applicable
requirements in ANSI Z60.1.
C. Measurements: Measure according to ANSI Z60.1. Do not prune to obtain required sizes.
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1. Trees and Shrubs: Measure with branches and trunks or canes in their normal position.
Take height measurements from or near the top of the root flare for field-grown stock and
container-grown stock. Measure main body of tree or shrub for height and spread; do not
measure branches or roots tip to tip. Take caliper measurements 6 inches (150 mm)
above the root flare for trees up to 4-inch (100-mm) caliper size, and 12 inches (300 mm)
above the root flare for larger sizes.
2. Other Plants: Measure with stems, petioles, and foliage in their normal position.
D. Soil- Testing Laboratory Qualifications: An independent or university laboratory, recognized by
the State Department of Agriculture, with the experience and capability to conduct the testing
indicated and that specializes in types of tests to be performed.
E. Soil Analysis: For each unamended soil type and for manufactured soils, furnish soil analysis
and a written report by a qualified soil-testing laboratory stating percentages of organic matter,;
gradation of sand, silt, and clay content; cation exchange capacity; deleterious material; pH; and
mineral and plat-nutrient content of the soil.
1. Testing methods and written recommendations shall comply with USDA’s Handbook No.
60.
2. The soil-testing laboratory shall oversee soil sampling; with depth, location, and number
of samples to be taken per instructions from Landscape Architect. A minimum of three
representative samples shall be taken from vaired locations for each soil to be used or
amended for planting purposes.
F. Plant Material Observation: Landscape Architect may observe plant material either at place of
growth or at site before planting for compliance with requirements for genus, species, variety,
cultivar, size, and quality. Landscape Architect may also observe trees and shrubs further for
size and condition of balls and root systems, pests, disease symptoms, injuries, and latent
defects and may reject unsatisfactory or defective material at any time during progress of work.
Remove rejected trees or shrubs immediately from Project site.
1. Notify Landscape Architect of sources of planting materials no more than 21 days after
procurement of contract.
G. Preinstallation Conference: Conduct conference at Project Site. Provide minimum of 24 hour
notice to landscape architect.
1.7 DELIVERY, STORAGE, AND HANDLING
A. Deliver plants after preparations for planting have been completed, and install immediately. If
planting is delayed more than six hours after delivery, set plants and trees in their appropriate
aspect (sun, filtered sun, or shade), protect from weather and mechanical damage, and keep
roots moist.
B. Set balled stock on ground and cover ball with soil, peat moss, sawdust, or other acceptable
material.
C. Do not remove container-grown stock from containers before time of planting.
D. Water root systems of plants stored on-site deeply and thoroughly with a fine mist spray. Water
as often as necessary to maintain root systems in a moist, but not overly-wet condition.
E. Lift and handle plants from the bottom of the ball only.
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F. Plants moved with a ball will not be accepted if the ball is cracked, loose or broken before or
during planting operations.
G. Packaged Materials: Deliver packaged materials in original, unopened containers showing
weight, certified analysis, name and address of manufacturer, and indication of compliance with
state and Federal laws if applicable.
H. Deliver fertilizer to site in original, unopened containers, each bearing manufacturer’s
guaranteed analysis.
I. Store packaged materials off ground and protect from moisture.
J. Bulk Materials:
1. Do not dump or store bulk materials near structures, utilities, walkways and pavements,
or on existing turf areas or plants.
2. Provide erosion-control measures to prevent erosion or displacement of bulk materials;
discharge of soil-bearing water runoff; and airborne dust reaching adjacent properties,
water conveyance systems, or walkways.
3. Accompany each delivery of bulk materials with appropriate certificates.
K. Do not prune trees and shrubs before delivery. Protect bark, branches, and root systems from
sun scald, drying, wind burn, sweating, whipping, and other handling and tying damage. Do not
bend or bind-tie trees or shrubs in such a manner as to destroy their natural shape. Provide
protective covering of plants during shipping and delivery. Do not drop plants during delivery
and handling.
L. Delivered CU-Structural Soil shall be at or near optimum compaction moisture content as
determined by AASHTO T 99 (ASTM D 698) and should not be placed in frozen, wet or muddy
sites.
M. Protect CU-Structural Soil from exposure to excess water and from erosion at all times. Do not
store CU-Soil unprotected. Do not allow excess water to enter site prior to compaction. If water
is introduced in the CU-Soil after grading, allow water to drain to optimum compaction moisture
content.
1.8 CODES, PERMITS AND FEES
A. Obtain any necessary permits for this Section of Work and pay any fees required for permits.
B. The entire installation shall fully comply with all local and state laws and ordinances, and with all
established codes applicable thereto.
1.9 FIELD CONDITIONS
A. Field Measurements: Verify actual grade elevations, service and utility locations, irrigation
system components, and dimensions of plantings and construction contiguous with new
plantings by field measurements before proceeding with planting work.
B. Planting Restrictions: Plant during one of the following periods. Coordinate planting periods with
maintenance periods to provide required maintenance from date of Substantial Completion.
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1. Deciduous Trees and Shrubs: Spring planting prior to June 1 and August 15 to November
15.
2. Evergreen Trees and Shrubs: April 1 to June 1 and September 1 to October 15.
3. Perennials: Planting period shall be from August 15 to September 15 and spring planting
prior to June 1.
C. Weather Limitations: Proceed with planting only when existing and forecasted weather
conditions permit planting to be performed when beneficial and optimum results may be
obtained. Apply products during favorable weather conditions according to manufacturer's
written instructions and warranty requirements.
D. Existing Utilities
1. Locate existing underground utilities in areas of work. If utilities are to remain in place,
provide adequate means of support and protection during this work.
2. Underground utilities shown on the drawings have been taken from existing public
records, Owner’s records available as-built drawings and are correct to the best of our
knowledge, provided for information only.
3. Should uncharted, or incorrectly charted, piping or other utilities be encountered during
excavation, consult Utility Owner immediately for directions. Cooperate with Owner and
utility companies in keeping respective services and facilities in operation. Repair
damaged utilities caused by Prime Contractor’s negligence to the satisfaction of Utility
Owner at no cost to the Project Owner.
4. Do not interrupt existing utilities serving facilities occupied and used by Owner or others
during occupied hours, except when permitted in writing by Landscape Architect and then
only after acceptable temporary utility services have been provided.
5. Provide minimum of 48-hour notice to Owner and Landscape Architect and receive
written notice to proceed before interrupting any utility.
E. Protection of Persons and Property
1. Barricade open excavations occurring as part of this work and post with warning lights.
2. Operate warning lights as recommended by authorities having jurisdiction.
3. Protect structures, utilities, sidewalks, pavements, and other facilities from damage
caused by settlement, lateral movement, undermining, washout and other hazards
created by this work.
1.10 INSPECTION AND APPROVAL
A. All materials described and specified herein are subject to inspection and approval by Owner’s
Representative.
B. Materials may be inspected by the Owner’s Representative at source of supply or the Owner’s
Representative may require the Prime Contractor to submit photographs which illustrate the
specified plant material at the source of supply.
C. This inspection does not waive the right to reject any material after it has been delivered to the
site and/or installed.
D. CU-Structural Soil: The engineer will inspect the completed work upon the request of the
installing contractor. Request for inspection shall be received by the engineer at least 10 days
before the anticipated date of inspection.
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1.11 INITIAL INSPECTION AND ACCEPTANCE
A. Initial inspection of the planting to determine completion of contract work, exclusive of possible
replacement of plants, will be made by the Owner’s Representative upon completion of the
work.
B. Initial inspection will not be conducted unless all items of work outlined in PART 3 EXECUTION
have been completed.
C. Five (5) days prior to the anticipated date of inspection submit written notice requesting
inspection to Owner’s Representative.
D. After inspection, the Prime Contractor will be notified in writing, by the Owner, of initial
acceptance of inspected work exclusive of the possible replacement of plants and correction of
deficiencies in the requirements for completion of the work.
E. Maintain, as specified, areas not acceptable until corrections are completed and re-inspection is
conducted.
F. If a significant time delay (sixty to ninety days) is encountered, through no fault of the
Landscape Contractor, inspection and initial acceptance of a major portion of the plantings may
be granted.
G. All plants shall be alive and healthy at the time of initial acceptance.
H. Replacement of rejected plants before initial acceptance to meet the terms of initial acceptance
shall not be considered a part of the guaranty and replacement requirement of this
Specification.
1.12 WARRANTY
A. Special Warranty: Installer agrees to repair or replace plantings and accessories that fail in
materials, workmanship, or growth within specified warranty period.
1. Failures include, but are not limited to, the following:
a. Death and unsatisfactory growth, except for defects resulting from abuse, lack of
adequate maintenance, or neglect by Owner.
b. Structural failures including plantings falling or blowing over.
2. Warranty Periods: From date of Substantial Completion:
a. Trees, Shrubs and Perennials: 12 months.
3. Include the following remedial actions as a minimum:
a. Immediately remove dead plants and replace unless required to plant in the
succeeding planting season.
b. Replace plants that are more than 25 percent dead or in an unhealthy condition at
end of warranty period.
c. A limit of one replacement of each plant is required except for losses or
replacements due to failure to comply with requirements.
d. Provide extended warranty for period equal to original warranty period, for
replaced plant material.
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B. Guarantee plants for the duration of two (2) full years after they are initially accepted as defined
herein.
C. Plants shall be alive and in good, healthy and flourishing condition of growth at the end of the
guaranty period.
D. At the end of the guaranty period, final inspection will be made by owner's Representativeupon
written notice requesting such inspection; submit notice to Owner's Representative atleast ten
(10) days before the anticipated date of inspection.
E. Any plant, required under this Contract, that is dead or not in a vigorous, thriving condition, as
determined by Owner's Representative at the time of Final Inspection, will be removed fromthe
site.
F. Plants that are missing at the time of Final Inspection are to be installed during the specified
planting season when weather and site conditions permit.
G. In case of any questions regarding the condition and satisfactory establishment of a rejected
plant, the Landscape Contractor may elect to allow such plant to remain through another
complete growing season. If at that time the rejected plant is found to be dead, in an un-healthy
or badly impaired condition, it shall be replaced.
H. After Initial Acceptance, replace plants (once during or at the end of the guaranty period) thatare
observed to be dead or in a badly impaired condition.
I. One replacement after initial acceptance shall constitute fulfillment of Prime Contractor's
guaranty for the particular plant replaced.
J. Replacement Plants: Plants of the same kind and size as specified in the Plant Schedule;
furnished and planted as specified herein.
K. Replacement Plants: Guyed or staked, mulched, wrapped, fertilized, pruned and restored to
original condition as originally specified at no cost to Owner.
L. Make all necessary repairs to grades, lawns and paving required because of plant replacements,
at no cost to the Owner.
M. Plant Replacement Cost: Borne by Prime Contractor except for possible replacements result-
ing from removal, loss or damage due to occupancy of project in any part, vandalism, civil
disobedience, or acts of neglect on the part of others, physical damage by animals, vehicles,
fire, etc., or losses due to curtailment of water by local authority, or to "Acts of God". Floods,
tornadoes, wind of hurricane force, and hail are not normal and the damage they do cannotbe
calculated in a bid.
PART 2 - PRODUCTS
2.1 PLANT MATERIAL
A. General: Furnish nursery-grown plants true to genus, species, variety, cultivar, stem form,
shearing, and other features indicated in Plant List, Plant Schedule, or Plant Legend indicated
on Drawings and complying with ANSI Z60.1; and with healthy root systems developed by
transplanting or root pruning. Provide well-shaped, fully branched, healthy, vigorous stock,
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densely foliated when in leaf and free of disease, pests, eggs, larvae, and defects such as
knots, sun scald, injuries, abrasions, and disfigurement.
1. Trees with damaged, crooked, or multiple leaders; tight vertical branches where bark is
squeezed between two branches or between branch and trunk ("included bark"); crossing
trunks; cut-off limbs more than 3/4 inch (19 mm) in diameter; or with stem girdling roots
are unacceptable.
2. Collected Stock: Do not use plants harvested from the wild, from native stands, from an
established landscape planting, or not grown in a nursery unless otherwise indicated.
B. Provide plants of sizes, grades, and ball or container sizes complying with ANSI Z60.1 for types
and form of plants required. Plants of a larger size may be used if acceptable to Architect, with a
proportionate increase in size of roots or balls.
C. Root-Ball Depth: Furnish trees and shrubs with root balls measured from top of root ball, which
begins at root flare according to ANSI Z60.1. Root flare shall be visible before planting.
D. Labeling: Label all plants with size, and caliper with a securely attached, waterproof tag bearing
legible designation of common name and full scientific name, including genus and species.
Include nomenclature for hybrid, variety, or cultivar, if applicable for the plant.
E. If formal arrangements or consecutive order of plants is shown on Drawings, select stock for
uniform height and spread, and number the labels to assure symmetry in planting.
F. Plant Schedule: A list of plant materials is scheduled on the Drawings. In the event of any
discrepancy between this schedule and the Plan Drawing showing the plants, the Plan Drawing
shall govern. All supplied plants shall be grown in the zone which they are to be planted or
lower.
G. Certificate of inspection of plant material required by Federal, State or other governmental
agencies to accompany all shipments to be furnished to the Owner’s Representative.
H. Nomenclature: The names of plants required under this Contract conform to those given in the
“Standardized Plant Names”, 1942 Edition, prepared by the American Joint Committee on
Horticultural Nomenclature. Names of varieties not included therein conform generally with
names accepted in the nursery trade.
I. Standards: All plant material, grading, sizes, methods, etc. are to conform to the Standards of
the American Association of Nurserymen, Inc. as contained in their current publication
“American Standard for Nursery Stock”, (ANSI Z60.1-1986). In the event there is a discrepancy
between these standards and this Specification, the most restrictive requirement shall govern.
J. Species and Variety: True to name as specified. Plants approved as true to name at time of
initial acceptance which, during the guaranty period, exhibait characteristics indicatin they are
not tru to name will be replaced at no cost to the Owner.
K. Availability: Before submitting his bid, the Prime Contractor shall have investigated the sources
of supply and satisfied himself that he can supply the listed plants in the size, variety and quality
listed and specified. Failure to take this precaution will not relieve the Prime Contractor from his
responsibility for furnishing and installing all plant materials in strict accordance with the
Contract Documents without additional cost to the Owner.
L. Quality
1. Growth habit typical for species and as indicated on the Plant Schedule.
2. Sound, healthy, vigorous and free from insect pests, plant diseases and injuries.
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3. One sided plants or plants taken from tightly planted nursery rows will be rejected.
M. Size and Form
1. Equal or exceed measurements specified in the Plant Schedule.
2. Measured before pruning with branches in normal position. Height and spread specified
refers to main body of plant and not from tip to tip of branches or roots.
3. Caliper of trees less than four inches (4”) taken six inches (6”) above ground level. Trees
four inches (4”) and over – measured one foot (12”) above ground level.
4. Specified trunk height can be obtained by pruning lower branches of a plant after the
plant has been installed; however, pruning to achieve specified trunk height is to occur
after Landscape Architect has inspected plant and directed Prime Contractor as to the
amount of pruning required.
5. Where specified by caliper, no one stem of a specific multi-stemmed plant shall be
smaller than the caliper size specified.
N. Balled and Burlapped Plants
1. Designated as “B&B”, dug with firm, natural balls of earth of sufficient diameter and depth
to encompass the fibrous and feeding root system necessary for full recover of the plant.
2. In compliance with ANSI Z60.1-1986.
3. Balls: Firmly wrapped with burlap or similar biodegradable material and bound with twine,
cord, or wire mesh.
4. Where necessary to prevent breaking or cracking of the ball during the process of
planting, the ball may be secured to a platform. Broken or loose balls will not be
accepted.
5. A container grown plant, in lieu of a “B&B” plant, will be accepted provided it meets
specified sizes and complies with ANSI Z60.1-1986.
6. A machine moved plant, in lieu of a “B&B” plant will be accepted provided it meets
specified sizes and complies with ANSI Z60.1-1986.
O. Container Grown Plants
1. Container size as specified in the Plant Schedule.
2. In compliance with ANSI Z60.1-1986.
P. Source
1. Provide plant material that was propagated and raised within 500 miles.
2.2 PLANTING SOIL
A. Manufactured Soil
1. Manufactured Soil is defined as soil to be used in planting areas per the plans. Soil test to
be submitted for approval.
2. Manufactured Soil to consist of Sand (2.0-.05mm) at 50%-60%, Silt (.05-.002mm)at 25%-
35%, Clay less than 15% and Organic Matter from 5%-15%. Soil report to be submitted
for approval of mix.
2.3 FERTILIZERS
A. Commercial Fertilizer: Commercial-grade complete fertilizer of neutral character, consisting of
fast- and slow-release nitrogen, 50 percent derived from natural organic sources of urea
formaldehyde, phosphorous, and potassium in the following composition:
1. Composition: 1 lb/1000 sq. ft (0.45 kg/92.9 sq. m) of actual nitrogen, 4 percent
phosphorous, and 2 percent potassium, by weight.
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2. Composition: Nitrogen, phosphorous, and potassium in amounts recommended in soil
reports from a qualified soil-testing laboratory.
B. Fertilizer which becomes caked or otherwise damaged making it not suitable for use, will not be
accepted.
C. Planting Tablets: Tightly compressed chip-type, long-lasting, slow-release, commercial-grade
planting fertilizer in tablet form. Tablets shall break down with soil bacteria, converting nutrients
into a form that can be absorbed by plant roots.
1. Size: Utilize size and quantity per manufacturers recommendation as related to plant and
container sizes. 10-gram tablets.
2. Nutrient Composition: 20 percent nitrogen, 10 percent phosphorous, and 5 percent
potassium, by weight plus micronutrients.
2.4 MULCHES
A. Organic Mulch: Free from deleterious materials and suitable as a top dressing of trees and
shrubs, consisting of one of the following:
1. Type: Shredded hardwood mulch.
2. Size Range: 3 inches maximum, ½ inch minimum.
3. 3” Depth in all planting beds..
4. Furnish in bags or bulk.
5. Natural color.
6. Submit sample for approval by Owner’s Representative.
2.5 PESTICIDES
A. General: Pesticide registered and approved by the EPA, acceptable to authorities having
jurisdiction, and of type recommended by manufacturer for each specific problem and as
required for Project conditions and application. Do not use restricted pesticides unless
authorized in writing by authorities having jurisdiction.
B. Pre-Emergent Herbicide (Selective and Nonselective): Effective for controlling the germination
or growth of weeds within planted areas at the soil level directly below the mulch layer.
C. Post-Emergent Herbicide (Selective and Nonselective): Effective for controlling weed growth
that has already germinated.
2.6 WRAPPING MATERIALS
A. Wrapping Material: Heavy crinkle crepe tree wrapping paper in strips four to ten inches (4”-10”)
wide.
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2.7 MISCELLANEOUS PRODUCTS
A. Antidesiccant: Water-insoluble emulsion, permeable moisture retarder, film forming, for trees
and shrubs. Deliver in original, sealed, and fully labeled containers and mix according to
manufacturer's written instructions.
PART 3 - EXECUTION
3.1 COMMENCEMENT DATE
A. At the earliest possible date site conditions permit.
3.2 PLANTING SEASON FOR BALLED AND BURLAPPED, CONTAINER GROWN MACHINE
MOVED PLANTS
A. Deciduous trees and shrubs: April 1 to June 1 and August 15 to November 15.
B. Evergreen trees and shrubs: April 1 to June 1 and August 15 to October 15.
3.3 EXAMINATION
A. Examine areas to receive plants, with Installer present, for compliance with requirements and
conditions affecting installation and performance of the Work.
1. Verify that no foreign or deleterious material or liquid such as paint, paint washout,
concrete slurry, concrete layers or chunks, cement, plaster, oils, gasoline, diesel fuel,
paint thinner, turpentine, tar, roofing compound, or acid has been deposited in soil within
a planting area.
2. Verify that plants and vehicles loaded with plants can travel to planting locations with
adequate overhead clearance.
3. Suspend planting operations during periods of excessive soil moisture until the moisture
content reaches acceptable levels to attain the required results.
4. Uniformly moisten excessively dry soil that is not workable or which is dusty.
B. If contamination by foreign or deleterious material or liquid is present in soil within a planting
area, remove the soil and contamination as directed by Architect and replace with new planting
soil.
C. Proceed with installation only after unsatisfactory conditions have been corrected.
D. Where surface or subsurface conditions prevent digging a plant pit to specified dimensions,
obtain approval from Owner's Representative to modify location of pit dimensions.
3.4 PREPARATION
A. Protect structures, utilities, sidewalks, pavements, and other facilities and turf areas and existing
plants from damage caused by planting operations.
B. Install erosion-control measures to prevent erosion or displacement of soils and discharge of
soil-bearing water runoff or airborne dust to adjacent properties and walkways.
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C. Apply antidessiccant at nursery before moving and again two weeks after planting.
1. If shrubs are moved in full leaf, spray with antidesiccant at nursery before moving and
again two weeks after planting.
D. Wrap trees and shrubs with burlap fabric over trunks, branches, stems, twigs, and foliage to
protect from wind and other damage during digging, handling, and transportation.
E. Stake out on the ground the locations of all plants and obtain approval of the Owner’s
Representative before excavation is begun.
F. Relocate incorrectly located plants at no expense to the Owner.
3.5 PLANTING AREA ESTABLISHMENT
A. Loosen subgrade of planting areas to a minimum depth of 4 inches. Remove stones larger than
1 inch in any dimension and sticks, roots, rubbish, and other extraneous matter and legally
dispose of them off Owner's property
1. Apply fertilizer directly to subgrade before loosening.
2. Thoroughly blend specified soil off-site before spreading, apply soil amendments and
fertilizer on surface, and thoroughly blend soil.
a. Delay mixing fertilizer with planting soil if planting will not proceed within a few
days.
b. Mix lime, if required, with dry soil before mixing fertilizer.
3. Spread specified soil to the depth per drawings but not less than required to meet finish
grades after natural settlement. Do not spread if specified soil orsubgrade is frozen,
muddy, or excessively wet
B. Finish Grading: Grade planting areas to a smooth, uniform surface plane with loose, uniformly
fine texture. Roll and rake, remove ridges, and fill depressions to meet finish grades.
C. Before planting, obtain Architect's acceptance of finish grading; restore planting areas if eroded
or otherwise disturbed after finish grading.
D. Application of Mycorrhizal Fungi: No earlier than 1 week prior to manufactured soil placement,
broadcast dry product uniformly to prepared soil per manufacturer’s recommendations.
3.6 EXCAVATION FOR TREES AND SHRUBS
A. Planting Pits and Trenches: Excavate circular planting pits with sides sloping inward at a 45-
degree angle. Excavations with vertical sides are unacceptable. Trim perimeter of bottom
leaving center area of bottom raised slightly to support root ball and assist in drainage away
from center. Do not further disturb base. Ensure that root ball will sit on undisturbed base soil to
prevent settling. Scarify sides of planting pit smeared or smoothed during excavation.
1. Excavate approximately three times as wide as ball diameter for balled and burlapped
stock.
2. Do not excavate deeper than depth of the root ball, measured from the root flare to the
bottom of the root ball.
3. If area under the plant was initially dug too deep, add soil to raise it to the correct level
and thoroughly tamp the added soil to prevent settling.
4. Maintain angles of repose of adjacent materials to ensure stability. Do not excavate
subgrades of adjacent paving, structures, hardscapes, or other new or existing
improvements.
5. Maintain supervision of excavations during working hours.
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6. Keep excavations covered or otherwise protected when unattended by Installer’s
personnel.
B. Subsoil and topsoil removed from excavations may not be used as backfill soil unless otherwise
indicated.
C. Obstructions: Notify Architect if unexpected rock or obstructions detrimental to trees or shrubs
are encountered in excavations.
D. Drainage: Notify Architect if subsoil conditions evidence unexpected water seepage or retention
in tree or shrub planting pits.
E. Fill excavations with water and allow to percolate (percolation test) away before positioning
trees and shrubs within 24 hours. Landscape Architect to observe percolation testing and
approve – prior to anything.
3.7 PLANTING
A. Inspection: Before planting, verify that root flare is visible at top of root ball according to
ANSI Z60.1. If root flare is not visible, remove soil in a level manner from the root ball to where
the top-most root emerges from the trunk. After soil removal to expose the root flare, verify that
root ball still meets size requirements.
B. Roots: Remove stem girdling roots and kinked roots. Remove injured roots by cutting cleanly;
do not break.
C. Balled and Burlapped Stock: Set each plant plumb and in center of planting pit or trench with
root flare 1 inch (25 mm) above adjacent finish grades.
1. Use manufactured soil for backfill.
2. After placing some backfill around root ball to stabilize plant, carefully cut and remove
burlap, rope, and wire baskets from tops of root balls and from sides, but do not remove
from under root balls. Remove pallets, if any, before setting. Do not use planting stock if
root ball is cracked or broken before or during planting operation.
3. Backfill around root ball in layers, tamping to settle soil and eliminate voids and air
pockets. When planting pit is approximately one-half filled, water thoroughly before
placing remainder of backfill. Repeat watering until no more water is absorbed.
4. Place fertilizer./ planting tablets equally distributed around each planting pit when pit is
approximately one-half filled. Place tablets beside the root ball about 1 inch (25 mm) from
root tips; do not place tablets in bottom of the hole.
5. Continue backfilling process. Water again after placing and tamping final layer of soil.
D. Set balled and potted, and container-grown stock plumb and in center of planting pit or trench
with root flare 1 inch (25 mm) above adjacent finish grade..
E. Slopes: When planting on slopes, set the plant so the root flare on the uphill side is flush with
the surrounding soil on the slope; the edge of the root ball on the downhill side will be above the
surrounding soil. Apply enough soil to cover the downhill side of the root ball.
3.8 TREE AND SHRUB PRUNING
A. Remove only dead, dying, or broken branches. Do not prune for shape.
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B. Prune, thin, and shape trees, shrubs, and vines as directed by Architect.
C. Prune, thin, and shape trees, shrubs, and vines according to standard professional horticultural
and arboricultural practices. Unless otherwise indicated by Architect, do not cut tree leaders;
remove only injured, dying, or dead branches from trees and shrubs; and prune to retain natural
character.
D. Do not apply pruning paint to wounds.
3.9 TREE STABILIZATION
A. Trunk Stabilization by Upright Staking and Tying: Install trunk stabilization as follows unless
otherwise indicated:
1. Upright Staking and Tying: Stake trees of 2- through 5-inch caliper. Stake trees of less
than 2-inch caliper only as required to prevent wind tip out. Use a minimum of two wood
stakes painted black, of length required to penetrate at least 18 inches (450 mm) below
bottom of backfilled excavation and to extend 4’-6” above grade. Set vertical stakes and
space to avoid penetrating root balls or root masses. Submit wood stake product
information for approval by Landscape Architect prior to installation.
2. Support trees with bands of flexible ties at contact points with tree trunk. Allow enough
slack to avoid rigid restraint of tree.
3. Support trees with two strands of tie wire, connected to the brass grommets of tree-tie
webbing at contact points with tree trunk. Allow enough slack to avoid rigid restraint of
tree.
B. Root-Ball Stabilization: Install at- or below-grade stabilization system to secure each new
planting by the root ball unless otherwise indicated.
3.10 GROUND COVER AND PLANT PLANTING
A. Set out and space ground cover and plants other than trees, shrubs, and vines in even rows
with triangular spacing. See planting schedule for spacing OR as indicated on drawings.
B. Use planting soil for backfill, as indicated on drawings.
C. Dig holes large enough to allow spreading of roots.
D. Work soil around roots to eliminate air pockets and leave a slight saucer indentation around
plants to hold water.
E. Water thoroughly after planting, taking care not to cover plant crowns with wet soil.
F. Protect plants from hot sun and wind; remove protection if plants show evidence of recovery
from transplanting shock.
3.11 PLANTING AREA MULCHING
A. Mulch backfilled surfaces of planting areas and other areas indicated.
1. Organic Mulch in Planting Areas: Apply 3-inch (75-mm) average thickness of organic
mulch over whole surface of planting area, and finish level with adjacent finish grades. Do
not place mulch within 3 inches (75 mm) of trunks or stems.
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2. Sub-grade surface of areas to receive mulch shall be sloped to drain, smooth and free of
ruts and clods.
3.12 PLANT MAINTENANCE
A. Maintain plantings by pruning, cultivating, watering, weeding, fertilizing, mulching, restoring
planting saucers, adjusting and repairing tree-stabilization devices, resetting to proper grades or
vertical position, and performing other operations as required to establish healthy, viable
plantings.
B. Fill in, as necessary, soil subsidence that may occur because of settling or other processes.
Replace mulch materials damaged or lost in areas of subsidence.
C. Apply treatments as required to keep plant materials, planted areas, and soils free of pests and
pathogens or disease. Use integrated pest management practices when possible to minimize
use of pesticides and reduce hazards. Treatments include physical controls such as hosing off
foliage, mechanical controls such as traps, and biological control agents.
3.13 FERTILIZER AND PESTICIDE APPLICATION
A. Apply fertilizer, pesticides and other chemical products and biological control agents according
to authorities having jurisdiction and manufacturer's written recommendations. Coordinate
applications with Owner's operations and others in proximity to the Work. Notify Owner before
each application is performed.
B. Pre-Emergent Herbicides (Selective and Nonselective): Apply to tree, shrub, and ground-cover
areas according to manufacturer's written recommendations. Do not apply to seeded areas.
C. Post-Emergent Herbicides (Selective and Nonselective): Apply only as necessary to treat
already-germinated weeds and according to manufacturer's written recommendations.
D. Apply fungicides, if needed, in accordance with Mycorrhizal Fungi manufacturer specifications.
3.14 WRAPPING
A. Promptly after planting, wrap trunks of all deciduous trees with tree wrapping paper spirally from
ground line to bottom branches.
B. Neat and snug; materials held in place by a suitable cord; tapes are unacceptable.
3.15 REPAIR AND REPLACEMENT
A. General: Repair or replace existing or new trees and other plants that are damaged by
construction operations, in a manner approved by Architect.
1. Submit details of proposed pruning and repairs.
2. Perform repairs of damaged trunks, branches, and roots within 24 hours, if approved.
3. Replace trees and other plants that cannot be repaired and restored to full-growth status,
as determined by Architect.
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B. Remove and replace trees that are more than 25 percent dead or in an unhealthy condition or
are damaged during construction operations that Architect determines are incapable of restoring
to normal growth pattern.
3.16 CLEANING AND PROTECTION
A. During planting, keep adjacent paving and construction clean and work area in an orderly
condition. Clean wheels of vehicles before leaving site to avoid tracking soil onto roads, walks,
or other paved areas.
B. Remove surplus soil and waste material including excess subsoil, unsuitable soil, trash, and
debris and legally dispose of them off Owner's property.
C. Protect plants from damage due to landscape operations and operations of other contractors
and trades. Maintain protection during installation and maintenance periods. Treat, repair, or
replace damaged plantings.
D. After approval by Landscape Architect, remove nursery tags, nursery stakes, tie tape, labels,
wire, burlap, and other debris from plant material, planting areas, and Project site.
3.17 MAINTENANCE SERVICE
A. Begin immediately following installation of plants and continue until initial acceptance.
B. Include watering, weeding, cultivating, mulching, removal of dead material, resetting plants to
proper grades or upright position and restoration of the planting saucer, and other necessary
operations.
C. If any planting is done after lawn preparation, provide proper protection to lawn areas and repair
any damage resulting from planting operation promptly at no cost to the Owner.:
D. Maintenance after initial acceptance of the planting will be performed by the Owner. Furnish
detailed written recommended maintenance program to the Owner with a copy to Owner's
Representatives, prior to initial acceptance of the various planting areas.
E. Maintenance performed by the Owner in accordance with recommended program will not affect
the Landscape Contractor's obligation to guarantee and replace defective plants as herein
described.
END OF SECTION 329300
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The Chauncey –Schematic Design Development
Iowa City, Iowa
SECTION 33 10 00
WATER UTILITIES
PART 1 GENERAL
1.01SUMMARY:
A.Furnish, install and test water distribution system as indicated and specified.
1.02REFERENCES:
A.This specification references the following documents. In their latest edition, the referenced
documents form a part of this specification to the extent specified herein. In case of conflict,
the requirements of this specification shall prevail. One copy of all references marked with a
*** shall be kept on the site, readily available and accessible to the Engineer during normal
working hours. Copies may be obtained from the organizations or from the Iowa City Water
Division at cost plus 15%.
B.City of Iowa City Water Division
1.Reference Manual
C.American National Standards Institute and American Water Works Combined Standards:
1.ANSI/AWWA-C104/A21.4: Cement-Mortar Lining for Ductile-Iron Pipe and Fittings
for Water
2.ANSI/AWWA-C105/A21.5: Polyethylene Encasement for Ductile-Iron Pipe Systems
3.ANSI/AWWA-C110/A21.10: Ductile-Iron and Gray-Iron Fittings, 3-inch through 48-
inch, for Water and Other Liquids
4.ANSI/AWWA-C111/A21.11: Rubber-Gasket Joints for Ductile-Iron Pressure Pipe
and Fittings
5.ANSI/AWWA-C150/A21.50: Thickness Design of Ductile-Iron Pipe
6.ANSI/AWWA-C151/A21.51: Ductile-Iron Pipe, Centrifugally Cast, for Water or Other
Liquids
7.ANSI/AWWA-C153/A21.53: Ductile-Iron Compact Fittings, 3-inch through 24-inch,
and 54-inch through 64-inch for Water Service
8.ANSI/AWWA C502: Dry-Barrel Fire Hydrants
9.ANSI/AWWA C504: Rubber-Seated Butterfly Valves
10.AWWA C509: Resilient-Seated Gate Valves for Water Supply Service.
11.ANSI/AWWA C510 Double Check Valve Backflow-Prevention Assembly
12.ANSI/AWWA C511 Reduced-Pressure Principal Backflow-Prevention Assembly
13.ANSI/AWWA C550: Protective Epoxy Interior Coatings for Valves and Hydrants
14.ANSI/AWWA C600***: Installation of Ductile-Iron Water Mains and Their Appurte-
nances
15.ANSI/AWWA C651***: Disinfecting Water Mains
16.ANSI/AWWA C900:Polyvinyl Chloride (PVC) Pressure Pipe, 4-inch through 12-inch
for Water Distribution.
D.American Water Works Association:
1.AWWA Manual M23***: PVC Pipe-Design and Installation
2.AWWA Manual M17***: Installation, Field Testing, and Maintenance of Fire
Hydrants.
E.American Society for Testing Materials:
1.ASTM D2241
F.Manufacturers Standardization Society:
1.MSS-SP-58 Pipe Hangers and Supports, Materials Design and Manufacture
2.MSS-SP-69 Pipe Hangers and Supports Selection and Application
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RAPC No. 121333 10 00-1
The Chauncey –Schematic Design Development
Iowa City, Iowa
G.Uni-Bell PVC Pipe Association:
1.UNI-B-3-88 Recommended Practice for the Installation of Polyvinyl Chloride (PVC)
Pressure Pipe (nominal diameters 4-36 inch) complying with AWWA Standard C-
900 or C-905.
1.03SUBMITTALS:
A.Submit to the Engineer the following drawings or details for approval prior to installation. One
copy of each with the approval stamp shall be kept at the work site at all times.
B.Shop and Working Drawings:
1.Pipe layout with valves, fittings and hydrants shown
2.Valves
3.Hydrants
4.Fittings
5.Bolts
6.Joints
7.Tapping sleeves, couplings, and special piping materials.
8.Polyethylene
9.Thrust block designs and details
10.Special backfill
C.Certificates: Sworn certificates of shop tests showing compliance with appropriate standard
for all piping materials.
D.Manufacturer's Literature:
1.Catalog cuts of joints, couplings, harnesses, expansion joints, gaskets, fasteners
and other accessories.
2.Brochures and technical data and coatings and linings and proposed method of
application.
E.Plans for initial operations and final operations: Special prepared drawings and typed list of
sequences of steps are needed prior to any operation of water distribution system. Submit 2
weeks prior to date of planned operation.
1.04QUALITY ASSURANCE:
A.Engineer reserves the right to inspect and test by independent service at manufacturer's
plant or elsewhere at Engineer's expense.
B.Contractor shall conduct visual inspection before installation.
1.05TIME:
A.Time is of the essence for water main construction work. All work which requires shutdown
of active water mains must be completed as quickly as possible to minimize inconvenience
to the consumers and risk to the community.
B.Amount of advance notice required to the Iowa City Water Division when materials or
services are supplied by the Division are listed below. Serve notice to the Water Division at
356-5160.
1.For tapping service, provide 24 hours notice.
2.For notice to customers of disruption of water service, provide 48 hours notice.This
work will be completed with the assistance of Water Division personnel.
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Iowa City, Iowa
3.For review, comments, and approval of plans of operation, provide 3 days notice.
4.For locations of underground facilities, provide 48 hours notice.
PART 2 PRODUCTS
2.01All products used for this work shall be from the list of "Accepted Products for Water Distribution
Materials" contained in the Iowa City Water Division Reference Manual and found in Appendix A. If
there is a discrepancy between the Iowa City Water Division Reference Manual and Appendix A, the
Iowa City Water Division Reference Manual prevails.
2.02DUCTILE-IRON PIPE:
A.Thickness design shall conform to ANSI/AWWA C150/A21.50.
B.Manufacture shall conform to ANSI/AWWA C151/A21.51.
C.Thickness for direct bury piping, unless otherwise indicated or specified, shall be class 52.
D.Thickness for pipe suspended from structures and bolted or restrained joint pipe, unless
otherwise indicated or specified, shall be class 53.
E.Cement mortar lining shall conform to ANSI/AWWA C104/A21.4.
2.03DUCTILE-IRON PIPE JOINTS:
A.Single rubber-gasket push-on joints or mechanical joints conforming to ANSI/AWWA
C111/A21.11. Furnish with all necessary hardware and gaskets.
B.Bell-and-spigot pipe joints conforming to ANSI A21.6 or ANSI A21.8.
C.For bolted/restrained mechanical joint, use Griffin Bolt-Lok restrained joint or approved
equal.(Class 53)
D.For unbolted/restrained mechanical joint, use Griffin Snap-Lok restrained joint or approved
equal.(Class 53)
E.Do not use drilled & tapped retainer glands.
F.Plain end of push-on pipe factory machined to a true circle and chamfered to facilitate fitting
gasket.
2.04POLYVINYL CHLORIDE PIPE:
A.Pipe shall conform to ANSI/AWWA C900 and shall be thickness class DR 18 (Class 150).
All pipe shall have the same outside dimensions as ductile-iron pipe. PVC pipe materials are
only allowed in sizes 6 to 10 inch diameter.
B.PVC pipe materials shall not be used in any area where there is likelihood the pipe will be
exposed to concentrations of pollutants comprised of low molecular weight petroleum
products or organic solvents or vapors.
C.PVC pipe shall not be installed under public roadways and shall not be used around cul-de-
sacs or other small radius curves.
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RAPC No. 121333 10 00-3
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Iowa City, Iowa
2.05FITTINGS:
A.All fittings shall conform to ANSI/AWWA C110/A21.10,with pressure rating of Class 350for
3” to 24”.
B.Mechanical-joint fittings shall be ductile iron compact ANSI/AWWA C153/A21.53 or ductile
standard ANSI/AWWA C110/A21.10. Large fittings, 12-inch through 20-inch shall be ductile
iron standard ANSI/AWWA C110/A21.10. Swivel tees shall be ductile iron standard
ANSI/AWWA C110.A21.10. Where ductile iron is not available (i.e., offsets), cast iron
standard ANSI/AWWA C110/A21.10 shall be provided.
D.All fittings shall be bituminous coated inside and outside and shall be furnished complete
with necessary accessories including plain rubber gaskets, ductile iron glands, NSS Cor-
Blue bolts and nuts. Verify the gasket seats are not made irregular by improper application
of the lining materials.
2.06VALVES & VALVE BOXES:
A.Gate valves shall conform to ANSI/AWWA C509.
1.Valves shall be full line size gate valves with epoxy coating inside and outside and
contain stainless steel nuts and bolts.
2.Valve bodies shall be ductile iron or cast iron. Working pressure of the valve shall
be at least 200 psi and gaskets rated at 250 psi.
3.Valves shall have a standard 2-inch square operating nut and shall open left.
4.Valves shall be capable of being repacked or replacing o-rings under pressure.
5.Valves are to be non-rising stem with the stem, nut and thrust collar made of bonze.
B.Butterfly valves shall conform to ANSI/AWWA C504, for buried service, Class150B.
1.Valve seat to be installed on disk or valve body.
2.Butterfly valves shall not be utilized in sizes smaller than 16", unless so noted on the
plans.
3.Working pressure of the valve shall be at least 150 psi.
4.Valves shall be short body pattern with mechanical joint ends.
5.Shaft seals shall be o-ring type.
6.Valve shall have manual operator with a 2" square operating nut for operation of the
valve and shall open left.
7.All interior and exterior cast iron, ductile iron or steel surfaces shall be painted with
an epoxy coating and contain stainless steel bolts and nuts.
C.Tapping Valves shall be as specified for resilient-seated gate valves with the exception that
one end shall be mechanical joint and the other end shall be flanged to match the tapping
sleeve and shall have oversize seat rings to permit entry of the tapping machine cutters.
1.Tapping valves be 175 psi minimum working pressure.
2.Valves shall be epoxy coated inside and outside with stainless nuts and bolts.
3.Valves shall be furnishedwith all joint accessories.
D.Valve Boxes shall be 2-piece or 3-pieceslip type, range 51” to 71”. Use lids marked "water".
2.07HYDRANTS:
Specification standard:ANSI/AWWA Standard C502
Type of shutoff:Compression
Type of construction:Break flange or break bolt above the ground line and a breakaway
stem connection. All bolts to be stainless steel.
Main valve opening:4½ inches for 12” water main and under 5¼ inches for 16” water
main and above
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The Chauncey –Schematic Design Development
Iowa City, Iowa
Nozzle arrangement 3 nozzle, two 2½-inch hose nozzles and one 4½-inch pumper
and sizenozzle, with caps attached with chains
Nozzle thread:National Standard Hose Threads
Type of inlet connection:Mechanical Joint
Size of inlet connection:6 inch
Depth of bury:Depth of bury shall be 6 feet
Direction of opening:Open to right (clockwise)
Packing:Conventional or O-Ring
Size and shape of operating 1½ inch, standard pentagon
nut:
Working pressure:250 psi
Color:Safety Red
2.08SPECIAL FITTINGS:
A.Special pipe fittings must be approved by theEngineer.
B.Special fittings must be the same diameter, thickness and pressure class as standard
fittings.
C. Special fittings may be manufactured to meet requirements of same specifications as
standard fittings except for laying length and types of end connection.
D.Full Body Tapping Sleeves:
1.Shall be mechanical joint, split construction with end gaskets, manufactured to fit
cast iron or ductile iron pipe. Branch shall have a flange fitting to match the tapping
valve.
2.Shall meet the OD requirements for Class A, B, C, or D pit cast pipe.
3.Shall be furnished complete with all accessories.
4.Required for 12" and larger pipe or under paving.
E. Stainless Steel Tapping Sleeves:
1.Shall be epoxy coated with ductile-iron flange and stainless steel bolts.
2.Shall meet the OD requirements for class A, B, C, or D pit cast pipe.
3.Shall be furnished complete with all accessories.
4.Shall be compatible with Mueller, Clow, Kennedy, or U.S. Pipe
F.Stainless Steel Repair Clamps:
1.All stainless steel, single section, double section, or triple section, depending
upon size of main.
2.Shall have stainless steel bolts and nuts.
2.09GASKETS, BOLTS, AND NUTS:
A.Mechanical joints made with:
1.Bolts: 3/4 inch NSS Cor-BLUE.
2.Stainless steel bold studs with stainless steel nutson each end.
B.All thread rod used to restrain fittings shall be stainless steel with stainless steel nuts and
3/4" diameter.
2.10LOCATION WIRE:
A.Location wire shall be #12 solid copper, THHN insulation in yellow or orange color.
2.11LUMBER:
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RAPC No. 121333 10 00-5
The Chauncey –Schematic Design Development
Iowa City, Iowa
A.Lumber for bracing or supports shall be hardwood (i.e. oak or maple). Do not use creosoted
lumber in contact with piping materials.
2.12WATER:
A.Reasonable amounts of water will be provided for use in the final operations of water main
flushing, disinfection and testing. Prior notice must be given to the Water Division.
B.Contractor will not be charged for the water used as long as there is reasonable care to
control and conserve the rate and volume used. If there is waste or carelessness,
Contractor will be charged for water.
PART 3 EXECUTION
3.01REFERENCES AND DOCUMENTS:
A.Contractor must have all required documents on the site before commencing with the work.
B.Valves, fittings, hydrants and ductile-iron pipe shall be installed in accordance with
ANSI/AWWA C600 except as noted herein.
C.PVC pipe must be furnished and installed in accordance with AWWA M23 and Uni-Bell PVC
Pipe Association UNI-B-3-88 except as noted herein.
D.Contractor must prepare and retain a set of "as-built" drawings on the job site with accurate
and current information on the location of all valves, pipe and special construction features.
Examples of special buried features would be:
1.Offsets in alignment.
2.Changes indepth, depth greater than 8 feet or less than 5 feet.
3.Special fittings or construction materials.
3.02RECEIVING, STORAGE AND HANDLING:
A.The Engineer may mark materials which are found on the job site and which are determined
to be defective or not approved. The marking may be done with spray paint. The Contractor
shall promptly remove defective or unapproved materials from the site.
B.While unloading PVC piping materials:
1.Do not allow the pipe units to strike anything.
2.Do not handlepipe units with individual chains or single cables, even if padded.
3.Do not attach cables to pipe unit frames or banding for lifting.
C.Within the "Storage" language of AWWA M23, change "should" to "shall."
D.Within the "Handling" language of AWWA M23, change "should" to "shall."
3.03LOCATION, ALIGNMENT, SEPARATION & GRADE:
A.Water mains, valves, hydrants, and special fittings shall be installed in the locations shown
on the plans or as directed by the Engineer.
B.Contractor shall have all buried utilities located by the 1-800-ONE-CALL service and shall do
exploratory excavation as necessary to determine specific conflicts between existing utilities
and new water main. No extra compensation will be allowed for the exploratory excavations.
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RAPC No. 121333 10 00-6
The Chauncey –Schematic Design Development
Iowa City, Iowa
C.Water main shall be installed a minimum depth of cover of 5½ feet.
D.Water mains crossing sewer services, storm sewers or sanitary sewers shall be laid to
provide a separation of at least 18 inches between the bottom of the water main and the top
of the sewer. Where local conditions prevent this vertical separation, the water main shall
not be placed closer than 6 inches above a sewer or 18 inches below a sewer under any
circumstances. Additionally, one full length of water pipe crossing the sewer shall be
centered at the point of crossing so that the water pipe joints will be equal distance as far as
possible from the sewer. The water and sewer pipes must be adequately supported and
have pressure tight joints. A low permeability soil shall be used for backfill material within 10
feet of the point of crossing.
E.No water pipe shall pass through or come in contact with any part of a sewer manhole. A
minimum horizontal separation of 3 feet shall be maintained.
F.All PVC water main and ductile ironwater main with greater than 400 feet between features
that extend to the surface (such as hydrants or valve boxes) shall be marked with a wire for
the entire length to make electronic location possible.
1.The wire shall be installed continuously as the pipe is backfilled. The wire shall be
fixed to the side of the pipe at a position of 2 o'clock or 10 o'clock and attached with
duct tape every 5 feet.
2.The insulation shall be protected to prevent accidental grounding. Make few splices
and splice thewire together using a Twister DB Plus Wire Connector.
3.Bring the wire to the ground surface at each fire hydrant and loop wire in a Valvco
tracer wire terminal box. These boxes shall be located between the hydrant and the
hydrant valve with at least two feet of extra wire inside the box. Install the terminal
box perpendicular from the hydrant and parallel with the valve box, one-foot from
the hydrant base. The tracer wire terminal box must be installed flush with the
finished grade. If there is no fire hydrant within 500 feet, bring the wire to the surface
in a “daylight box” which is a full-size valve box and mark the drawings
appropriately.
3.04PIPE BEDDING AND BACKFILLING:
A.Ductile-iron pipe bedding shall conform to the project plan detailsor as otherwise specified
or directed by the Engineer.
B.PVC pipe bedding shall conform to UNI-B-3-88 laying condition Type 2 including hand
excavation for the bell holes. The bedding shall be loose, natural, fine soil which is
compacted by stomping onthe soil along the sides of the pipe to the top of the pipe.
C.Trench width within the pipe envelope shall conform to the plans or as directed by the
Engineer.
D.Set valves and hydrants on precast concrete bases.
3.05PIPE RESTRAINT:
A.Thrust Restraint:
1.For pipe smaller than 10" diameter, concrete block shall be used, placing the
concrete block next to the fitting and undisturbed soil. For 10" and larger diameter
pipe, blocking shall be by cast-in-place concrete. Cover fittings and joints with 10
mil. polyethylene before placing concrete. Brace fittings with hardwood lumber to
prevent shifting before placing concrete.
2.Do not pour excess concrete on top of pipe and fittings.
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RAPC No. 121333 10 00-7
The Chauncey –Schematic Design Development
Iowa City, Iowa
B.Socket Pipe Clamps, Tie Rods, and Bridles:
1.Where indicated or necessary to prevent joints or sleeve couplings from pulling
apart under pressure, provide suitable socket pipe clamps, tie rods, and bridles.
Bridles and tie rod diameter shall be at least 3/4 in. except where they replace
flange bolts of smaller size with nut on each side of flange.
C.Dead Ends
1.Pipe ends or fittings left for future connections shall be plugged or capped using
materials supplied by the pipe manufacturer.
2.All pipe ends or fittings left for future connections shall be blocked against thrust.
3.06JOINTS AND COUPLINGS:
A.Push-on Joints:
1.Inspect bell grooves and clean to assure complete gasket seating.
2.Use extreme care to prevent separation of joints already installed.
2.Do not use push-on joints when boring. Griffin Snap-Lok shall be used in casing
with locking rubbers.
B.Mechanical Joints:
1.The range of torque for tightening bolts which is indicated in ANSI/AWWA C600
may be somewhat affected by the temperature. On cold days, more torque may be
required.
2.Use extreme caution when tightening cast iron fittings to avoid breaking the ears of
the flanges. An average worker should not use a wrench longer than 10 inches.
3.On PVC pipe connections to MJ joints, cut the bevel off the end of the PVC pipe to
get full pipe diameter in the joint.
4.Do not deflect pipe at joint.
C.Sleeve-Type Coupling:
1.Clean pipe ends for distance of 12 inches.
2.Use soapy water as gasket lubricant.
3.Carefully mark and place the sleeve coupling in the center of the joint.
3.07TAPPED CONNECTIONS UNDER PRESSURE:
A.Follow manufacturer's installation instructions.
B.Tapping mains for new connections 1-inch to 12-inch in diameter shall be done by the Water
Division.
C.A new and site specific tapping application must be prepared for each tap regardless of size,
and submitted to the Water Division. The tapping application must be completed and include
location, name, and address of water customer, schematic drawing, and materials of
construction.
3.08POLYETHYLENE ENCASEMENT:
A.All open cut installed ductile iron pipe and fittings shall be wrapped with an 8 mil polyethylene
encasement in accordance with ANSI/AWWA C205/A21.5 installation methods. This includes
any ductile iron laid in cul-de-sacs or other small radius areas where PVC main could not be
used.
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RAPC No. 121333 10 00-8
The Chauncey –Schematic Design Development
Iowa City, Iowa
3.09HYDRANT INSTALLATION:
A.Handle carefully to avoid breakage and damage to flanges. Keep hydrants closed until they
are installed. Protect stored hydrants from dirt, water, ice, animals and vandals.
B.Before installation, clean piping and elbow of any foreign matter.
C.Install hydrants away from the curb line a sufficient distance to avoid damage from or to
vehicles. A set-back of 4 feet from the curb line is recommended.
D.Orient the hydrant so the pumper nozzle faces the street. Outlet nozzles shall be at least 18
inches above finished ground. The break-off flange should be no more than 6 inches above
ground. There shall be no obstructions to fire hose connections.
E.The base elbow shall be placed on solid precast concrete blocks on firm, undisturbed soil.
The barrel of the hydrant shall be firmly braced against the back of the trench wall with pre-
cast cement blocksto resist thrust at the pipe connection.
F.The base and lower barrel shall be backfilled with 5 cubic feet of washed gravel or 1 inch
crushed rock to allow water to release from the hydrant drain.
G.Install the hydrant plumb. Drainage stone and soil backfill around the barrel shall be firmly
compacted to provide good lateral support for the hydrant. This is essential to the
performance of the break-off flange.
3.10WATER MAIN OPERATIONS:
A.All work which involves operating the active public water distribution system will require the
notice, consent, approval and assistance of the Water Division.
B.An accurate and legible copy of the "as-built" drawings must be on file in the Water Division
office prior to using the water supply.
C.If requested by the City, the contractor will work with the Water Division personnel tosubmit
a plan for initial operations and a plan for final operations to the Water Division for approval.
The plans shall include a drawing and typed list of actions which show all the significant
steps necessary to connect to the existing water distribution system or conduct the filling,
flushing and testing operations. The purpose of both plans is to minimize the impact of
service interruptions and pressure and flow variations on the water distribution system and
existing customers.
3.11DISINFECTION FOR POTABLE WATER SYSTEMS:
A.General
1.Upon completion of a newly installed water main or when repairs to an existing
water system are made, the main shall be disinfected according to instructions
listed in ANSI/AWWA C651 and the following specifications.
B.Special Disinfection Requirements
1.Exercise cleanliness during construction. Protect pipe interiors, fittings and valves
against contamination.
2.Water main 16-inch and larger in diameter must be swabbed with a soft pig prior to
flushing if flow in the system is not adequate to maintain scouring velocity (2 fps)
during flushing.
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3.The minimum uniform concentration of available chlorine used for disinfection shall
be 50 mg/L. Use either the granulated/tablet or continuous feed method with
modifications as described in 3.11 C or D below.
4.The chlorinated water shall be retained in the main at least 24 hours, during which
time all valves and hydrants in the section treated shall be operated in order to
disinfect the appurtenances. At the end of this 24 hour period, the treated water
shall contain no less than 25 mg/L chlorine throughout the length of main.
5.After the retention period, flush the heavily chlorinated water from the main until the
chlorine concentration in the waterleaving the main is no higher than 3 mg/L and
the water appears clean. Flush at a minimum velocity of 2.5 feet per second in the
main through an opening not less than ¼ of the main diameter. For 6-inch through
12-inch water mains, a single 2½-inch fire hydrant opening is adequate. Water
entering storm sewer system shall be dechlorinated by a method approved by the
Engineer to prevent downstream environmental damage (i.e. fish kills).
6.Collect a bacterial sample from the end of each line or 800-1,000 feet and deliver
the sample to the University Hygienic Laboratory at Oakdale for analysis. Allow
approximately 5 days for the results. If the bacterial sample shows the absence of
coliform organisms, the hydrostatic test may proceed.
C.Tablet Method of Chlorine Application
1.Use ANSI/AWWA C651, however slowly fill the main (less than 1 cubic foot per
second) with system water, pushing out as much air as possible. Do not wash out
the tablets.
D.Continuous Feed Method of Chlorine Application
1.Prior to applying chlorine, do a preliminary flush at a minimum velocity of 2.5 feet
per second in the main through an opening not less than not less than ¼ of the
main diameter. For 6-inch through 12-inch water mains, a single 2½-inch fire
hydrant opening isadequate.
2.Add the water and chlorine solution with the required concentration to fill the main
completely.
3.12TESTING:
A.Filling the water main:
1.Fill the newly constructed water main system slowly using treated public water
under low pressure and low flow. The objective is to displace air with water while
avoiding damage to new construction, customer services, and adjoining property
due to the release of air and water. Public Works staff must be on site to assist with
operation of the system valves and hydrants during this operation.
3.Open one hydrant (completely) at the end of the main or at a high point on the main
which is to be filled. Open a filling valve (the smallest one available) slightly. Allow
the water main to fill and slowly release the air. When the main being filled has
released nearly all air, surging should diminish and water released from the hydrant
should flow in a steady stream. Monitor and control the released water to minimize
damage.
3.After a few minutes of steady state operation, open all other valves slowly and then
open the initial fill valve completely, while regulating the flow hydrant to minimize
damage. When the main has been filled, open and close all hydrants sequentially to
force fresh water progressively through each section (new and old) of water main
which was shut down to replace fresh water into each section.
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RAPC No. 121333 10 00-10
The Chauncey –Schematic Design Development
Iowa City, Iowa
4.After clear water and a fresh chlorine odor are observed at each hydrant, shut down
hydrant flow slowly and allow water flow to cease and internal pressure to stabilize.
Then, each water service connection shall be tested at a sill cock and observed by
the Contractor to verify adequate pressure and flow.
B.Pressure and Leakage Tests:
1.Conduct combined pressure and leakage testin accordance with ANSI/AWWA
C600.
2.Pressure test off the hydrants or furnish and install temporary testing plugs or caps.
Furnish pressure pumps, pipe connections, meters, gauges, equipment, potable
water and labor. Use only potable water for testing.
3.Test after disinfection operations are successfully completed. If testing operations
require reconstruction or repairs during which the interior of the pipe is exposed to
contamination, disinfection will be required again.
4.Keep the water main full of water for 24 hours before conducting combined
pressure and leakage test.
5.Pressure and leakage test consists of first raising water pressure at the lowest point
of section being tested to 150 psi internal pressure.
6.Failure to achieve and maintain thespecified pressure for two hours with no
additional pumping means the water main has failed to pass the test.
7.If the water main fails the pressure and leakage test, locate, uncover, and repair or
replace defective pipe, fitting or joints. Conduct additional tests and repairs until
water main passes the test.
C.Valve Operations:
1.All valves shall be located and tested to verify operation. Remove the valve box lid,
insert the valve key and open and close each valve. Count the turns and record the
results.
D.Hydrant Operations:
1.After the hydrant has been installed and the main and hydrant have been pressure
tested, each hydrant shall be flushed and checked for proper operation.
2.Remove a nozzle cap and open the hydrant slowly and fully. Check the direction of
opening as marked on the top. Do not force the hydrant in the opening direction
beyond full open as indicated by sudden resistance to turning.
3.After hydrant has been flushed, close it and check for drainage. This is done by
placing the hand over the nozzle opening and checking for a vacuum. Then check
the hose thread for proper fit.
4.Replace nozzle cap, then open hydrant again and inspect all joints for leaks.
E.Flow Test:
1.Flow tests shall be conducted to verify allcomponents of the water system are fully
open and operational and to determine the fire flow capacity.
2.Public Works staff personnel must be on the site to operate the system valves and
hydrants during this test.
3.A hydrant flow test shall be conducted on the hydrant at the extreme locations for
distance or highest elevation to determine the fire flow capability of the system.
Static and flowing pressures and flow rates shall be recorded, and a copy forwarded
to the Water Division.
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RAPC No. 121333 10 00-11
The Chauncey –Schematic Design Development
Iowa City, Iowa
APPENDIX A
Accepted Products for Water Distribution Materials
WATER PIPE: (Ductile) ANSI/AWWA –A21.51/C151
American, Clow, Griffin, McWane, Tyler, and US Pipe
Class 52 for direct bury piping unless other wise indicated or specified.
Class 53 for suspended from structures and bolted or restrained joint pipe
WATER PIPE: ( PVC) (Class 150) –C900
C900 thickness class DR18 (6” thru 10”)
FITTINGS: (Ductile Iron Standard) ANSI/AWWA –A21.10/C110, 3” to 24” -350 psi (Ductile Iron
Compact) AWWA C153, 350 psi
Clow, Tyler/Union, U.S. Pipe, or Sigma
TAPPING SLEEVES: (Full Body Ductile Ironwith Stainless Steel and/or NSS Cor-Blue Nuts and
Bolds)for 12” and larger or under pavement
Clow -F-5205, Mueller -H615, Kennedy, Tyler/Union, Kennedy, American Flow Control -Series 2800, or
U.S. Pipe -T-9
TAPPING SLEEVES: (Stainless Steel)
Smith Blair -662 or 663, Ford FAST, Mueller-H304, Romac SST, JCM-432
MECHANICAL JOINT RESTRAINT DEVICE: (Megalug)
Ebaa Iron Sales Inc.
STAINLESS STEEL REPAIR CLAMPS:
Smith-Blair-261, Ford FS1, Romac SS1
VALVES: (Resilient Seated Gate Valves) ANSI/AWWA –C509
Clow F-2640, Kennedy 1571-X, Mueller Resilient Seat -A-2360-20, American Flow Control -AFC-500, or
U.S. Pipe Metro Seal 250 #5460
VALVES: (Butterfly) ANSI/AWWA C504, Class 150B
Clow, Pratt, Mueller, American Darling, Kennedy, M & H, or DeZurik
VALVES: (Tapping)
Clow –F-2640, Mueller –T-2360-16, Kennedy 4950, U.S. Pipe Metro Seal 250 #5860, or American Flow
Control-865
VALVE BOXES:
Tyler –(Series 6855 & Item 666A, Range 51” to 71”)
East Jordan Series 8555 & Item 666A –Range 51” to 71”
HYDRANTS (4 ½” for 12” and under) (5 ¼” for 16” and above) AWWA C502
Clow F-2545 Medallion, Kennedy Guardian K-81, Mueller Super Centurion 250, American Darling -MK 73
for 4 1/2" & B84-B for 5 1/4"
SLEEVE TYPE COUPLING:
Standard solid black sleeve –Tyler/Union 5-1442, Griffin
Bolted Straight Couplingwith stainless steel bolts and nuts–Smith-Blair 441 or Romac Style 501
STAINLESS STEEL REPAIR CLAMPS (with stainless steel bolts & nuts):
Smith-Blair 261, Romac SS1 or Ford FS1
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RAPC No. 121333 10 00-12
The Chauncey –Schematic Design Development
Iowa City, Iowa
TRACER WIRE TERMINAL BOX (DAYLIGHT BOX):
U.S. Filter WaterPro or Utility Equipment -Valvco –95E –2 ½” ID with lockable
cast-iron lid –minimum 18” long, telescoping
TRACER WIRE CONNECTORS:
Twister DB Plus Wire Connector
POLYWRAP:
8 mil polyethylene encasement
WIRE:
#12 solid copper, THHN insulation in yellow or orange
FREEZELESS YARD HYDRANT:
Woodford Mfg. Iowa Model Y34 and YI
END OF SECTION
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Iowa City, Iowa
SECTION 33 10 05
WATER SERVICE WORK
(Revised2/1/2013)
PART 1 -GENERAL
1.01DESCRIPTION:
A.Furnish and install new water services and yard hydrants as indicated and specified.
1.02RELATED WORK:
A.Section 02660:Water Distribution
1.03REFERENCES:
A.This specification references the following documents. In their latest edition, the referenced
documents form a part of this specification to the extent specified herein.
B.City of Iowa City Water Division:
1.Policy and Procedures Manual.
C.American National Standards Institute and American Water Works Combined Standards:
1.ANSI/AWWA-C800 Underground Service Line Valves and Fittings.
D.American Society for Testing Materials:
1.ASTM B75-86 Seamless Copper Tubing.
1.04SUBMITTALS:
A.Submit to the Engineer the following drawings or details for approval 4 weeks prior to
installation.
1.Sworn certificates of shop tests showing compliance with appropriate standard for
all piping materials.
2.Working drawing or site plan with customer location, address, size, and materials of
water service and main pipe including a full list of materials required from the Iowa
City Water Division, as applicable.
1.05PERMITS:
A.City of Iowa City:
1.Contractor's superintendent on the job must have a license as a sewer and water
service installer issued by the City to construct water and sewer mains and services
in Iowa City.
2.The Contractor or their agent will be responsible for the tapping application forms
and records.
1.06TIME:
A.Time is of the essence for water service work. All required work must be completed as
quickly as possible to minimize inconvenience to the consumers. The Contractor is
expected to comply with the minimum response and completion times listed.
B.Amount of advance notice required to the Iowa City Water Division when materials or
services are supplied by the Division islisted below. Serve notice to the Water Division at
356-5160.
1.For tapping service, provide 24 hours notice. Scheduling depends on workload.
2.For locations of underground facilities, provide 48 hours notice.
C.Response Time -the maximum time allowed from telephone notice by the Engineer until the
Contractor is on the job and ready to begin work:
1.For 1 service which is planned work, less than 24-36 hours.
2.For 1 service which is emergency work, less than 4-6 hours.
3.For 3 or more services which are planned work, less than 48 hours.
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RAPC No. 121333 10 05-1
D.Completion Time -the maximum time allowed from the time the Contractor turns off the
water until the water service is connected and operational under normal circumstances:
1.For 1 service, where it is necessary to break and remove concrete with no prior
warning or planning, less than 12 hours.
2.For 6-8 services or more in one block area with prior planning, some services on
each side of the street and in conjunction with paving projects, less than a 12-hour
workday.
1.07WORK ON PRIVATE PROPERTY FOR OTHERS:
A.Water service work may be necessary or desired by private property owners at the same
time as the new water service work under this contract is done. The Contractor will be
allowed to work on private property adjacent to the work site in order to do water service
work directly for the private property owner. Work on private property shallnot adversely
affect the time schedule for work under this contract.
B.The work on private property will not be the responsibility of the City.
PART 2 -PRODUCTS
2.01WATER SERVICE MATERIALS
All products used for this work shall be from the list of “Accepted Products for Water Distribution
and Water Service Materials” contained in the Iowa City Water Division Reference Manual.
The manufacturer shall furnish a certificate indicating all new materials meet the specifications.
All valves, fittingsand pipe shall be inspected several times during the manufacturing process
and pressure tested with air under water before shipment. All water service materials shall
be visually inspected before installation. Brass and copper are soft metals and carein handling
shall be exercised to avoid damaging threads or distorting piping, valves or fitting bodies.
All water service lines will be furnished and installed by the Contractor. Material shall be new
type K copper in coils for sizes 3/4-inch through 1½-inch and in coils or straight pipe for
2-inch size. No couplings or connections will be permitted under the paving.
A. SERVICE SADDLES:
1.Service saddles shall meet or exceed current to ANSI/AWWA C800/C900
specificationsandshall be made in accordance with ASTM B-62.
2.Saddles shall be equal to but not exceed up to 200 PSIG.
3.Body shall be 85-5-5-5 cast brass.
4. Strap shall be wide band, 304L stainless steel with 304L stainless steel studs.
5.Nuts and washers shall be 304 stainless steel. Nuts are supplied with fluorocarbon
coating.
6.Saddles shall be AWWA tap thread (CC thread).
7.Saddles with nitrile gaskets shall be used in L.U.S.T. areas (leaking underground
storage tank areas).
B.CORPORATION VALVES:
1.Corporation valves shall meet or exceed current ANSI/AWWA C800
specifications and shall be made in accordance with ASTM B-62.
2.Valves shall be 300 PSIG maximum working pressure.
3. Body shall be made of “no lead brass” alloy which shall not contain more
than nine one hundredthsof one percent (0.09% or less) total lead content
by weight per ASTM B584.
4.Valves shall be inlet: AWWA taper thread, outlet: conductivecompression
connection for CTS O.D. tubing.
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Project No. 121333 10 05-2
5.Valves shall be compression ball type valves.
C. BALL CURB VALVES:
1.Ball curb valves shall meet or exceed current ANSI/AWWA C800specifications and
shall be made in accordance with ASTM B-62.
2.Valves shall be 300 PSIF maximum working pressure.
3. Body shall be made of “no lead brass” alloy which shall not contain more
than nine one hundredthsof one percent (0.09% or less) total lead content
by weight per ASTM B584.
4.Valves shall be compression connection for CTS O.D. tubing, both ends.
5.Valve shall have a quarter turn check with fluorocarbon coated ball and
stainless steel reinforced seat.
6.Valve shall have end pieces o-ring sealed with double o-ring seals.
D.CURB BOX –ARCH PATTERN:
1.Curb box shall meet or exceed current ANSI/AWWA C800 specifications.
2.Curb box lid shall be Erie Pattern –5601L–2-hole.
3.Curb box shall be 5-foot box (telescope 1-foot) and shall telescope up
and down inside the base casting.
4.Curb box shall be slide style.
5.Curb box andaccessories shall be black dip coated inside and out.
6.Curb box rod length shall be a 5/8” rod, 42-inches long, small key-clamp
welded to rod with stainless steel rod and cotter pin.
E.STRAIGHT THREE PART UNIONS:
1.Unions shall meet or exceedcurrent ANSI/AWWA C800 specifications
and shall be made in accordance with ASTM B-62.
2.Union shall be conductive compression connection for CTS O.D. tubing
both ends.
3.Body shall be made of “no lead brass” alloy which shall not contain more
than nine one hundredthsof one percent (0.09% or less) total lead content
by weight per ASTM B584.
4.Gripper band shall be stainless steel and overlap itself so no gasket material
can get underneath.
5.Conductor spring shall provide metal to metal contact between copper tubing
and the fitting for electrical conductivity.
6. Entire gasket shall be enclosed.
7.Fluorocarbon coating shall be on inside surface of nut.
8.Union pressure rating shall be greater than the valve or fittingwith which it
is used.
F.COPPER TUBING:
1.Copper tubing shall meet or exceed current ANSI/AWWA C800 specifications.
G.YARD HYDRANTS:
1.Yard hydrants shall be freezeless style.
PART 3 -EXECUTION
3.01RECORDS AND DOCUMENTS:
A.Contractormust prepare and retain a set of "as-built" drawings on the job site with accurate
and current information on the location of all water service valves, pipe and special
construction features. Examples of special construction features include:
1.Offsetsin alignment.
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Project No. 121333 10 05-3
2.Changes in depth and depth greater than 8 feet or less than 5 feet.
3.Special fittings or construction materials.
Following completion of the project, a copy of these drawings shall be furnished to the Water
Division.
3.02RECEIVING, STORAGE AND HANDLING:
A.The Engineer may mark materials found on the job site which are determined to be
defective or not approved. The marking may be done with spray paint. The Contractor shall
promptly remove defective or unapproved materials from the site and replaced with new.
3.03EXCAVATION AND BACKFILL:
A.All excavators shall comply with the requirements of the O.S.H.A Standards subpart P-
Excavations.
B.Earth excavation, backfill, fill and grading shall be in accordance with Section 02220.
C.Excavation and backfill shall include all excavation, backfilling, compacting, stockpiling of
surplus material on the site, and all other work incidental to the construction of trenches,
including any additional excavation which may be required for construction of the water
service lines.
D.Along the proposed water service lines, the Contractor shall remove the surface materials
only to such widths as will permit a hole or trench to be excavated, which will afford sufficient
room for proper construction. Paving removals shall be as directed by the Engineer
E.The Engineer shall approve removal limits.
F.Where working space permits, holes or trenches may be excavated by machine, provided
that by so doing, public and private improvements will not be subjected to an unreasonable
amount of damage. The size of the hole shall be as small as reasonably possible to do the
work. If, however, excavation by machine methods cannot be made without damage being
done to public and private improvements, hand excavation shall be employed.
G.The Contractor shall use a mole for excavation of a hole to place the water service piping,
¾” to 2” diameter, at any location under a street surface, driveway, sidewalk or lawn area
whenever the distance from the water main to the water service connection is greater than
20 feet. The mole shall be used even though the street surface has been removed so as to
protect the new street surface from settlement. The mole shall be a maximum of four inches
in diameter. The Contractor shall be responsible for all labor, equipment, materials and
supervision for mole excavation.
H.The Contractor shall be responsible for coordinating the location of all buried utilities and for
all damage or repairs to utilities caused by mole excavation.
I.Whenever, in the opinion of the Engineer, it is necessary to explore and excavate to
determine the best line and grade for the construction of the new water service line or to
locate an existing water service which must be disconnected, the Contractorshall make
explorations and excavations for such purposes.
J.All excavated material shall be piled in a manner that will not endanger the work and that will
avoid obstructing sidewalks and driveways. Fire hydrants under pressure, valve pit covers,
valveboxes, curb stop boxes, or other utility controls shall be left unobstructed and
accessible until the work is completed. Gutters shall be kept clear and adequate provisions
shall be made for street drainage. Natural watercourses shall not be obstructed.
K.The Contractor shall provide and maintain ample means and devices with which to promptly
remove and properly dispose of all water entering excavations or depressions until all work
has been completed. No sanitary sewer shall be used for disposal of water.
L.To protect persons from injury and to avoid property damage, adequate barricades, fencing,
construction signs, caution lights and guards as required shall be placed and maintained by
the Contractor at excavations during the progress of the construction work and until it is safe
for pedestrian and vehicular traffic to use the roads, sidewalks and facilities. All material
piles, equipment and pipe which may serve as obstructions shall be enclosed by fences or
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Project No. 121333 10 05-4
barricades and shall be protected by proper lights when the visibility is poor. The rules and
regulations of O.S.H.A. and appropriate authorities for safety provisions shall be observed.
M.Trees, shrubbery, fences, poles and all other property and structures shall be protected
during construction operations unless their removal for purposes of construction is
authorized by the Engineer. Any fences, poles, or other improvements which are removed or
disturbed by the Contractor shall be restored to the original condition after construction is
completed. Any trees, shrubbery or other vegetation which are approved for removal or
ordered for removal by the Engineer shall be removed completely, including stumps and
roots. The Contractor shall be responsible for any damage caused by construction
operations to shrubbery or other landscape improvements which were not authorized for
removal by the Engineer.
3.04WATER SERVICE CONSTRUCTION:
A.Tapping mains for new connections 1-inch to 12-inch in diameter shall be done by the Water
Division. This includes connections made on public and private mains.
B.The City Water Division will provide,at Contractor cost, labor to tap the water main for
services. Each water service pipe shall be connected to the water main through a brass
corporation stop. A tapping saddle is required on all water main materials. The plastic plug
from PVC main shall be recovered. The main shall be tapped at an angle of forty-five
degrees (45°) with the vertical, if possible. The stop must be turned so that the T-handle will
be on top.
C.The old water service under the street right-of-way will be shut off and removed. The old
stop box will be removed.
D.The Contractor shall install the new copper service line from the new corporation stop to the
new curb stop and from the curb stop to the customer service line near the property line.
The size will be determined by the Water Division. The minimum size will be 1-inch to the
stop box. The service pipe shall be laid in the mole hole excavation and in the trench with
sufficient weaving to allow not less than one foot extra length for each 50 feet of straight line
distance.
E.Underground water service pipe shall be laid not less than ten (10) feet horizontally from the
building drain, and shall be separated by undisturbed or compacted earth. Where the
horizontal separation cannot be met, the water service pipe shall be installed so the bottom
of the water service pipe is at least eighteen (18) inches above the top of the building drain
line at its highest point.
F.A curb stop shall be furnished and installed for each service at the location shown on the
plans, or as directed by the Engineer. Place a brick or masonry block under each stop box
valve. A cast iron stop box shall be furnished and installed over the curb stop and held in a
trulyvertical position, until sufficient backfill has been placed to ensure permanent vertical
alignment of the box. The top of the box shall be adjusted and set flush with the finished
surface grade. The stop box shall be located between the curb and the property line and
visible from the sidewalk.If the stop box is located in the concrete (such as a driveway or
sidewalk) a cement-style stop box lid must be used instead of the regular style lid.
G.The Contractor shall make a clean cut on the existing service line and connect the new
service line at the location as directed by the Engineer.
H.The Contractor shall be responsible for visual inspection of all water service materials used
in this work. If water pressure is available or will be available within24 hours of making the
new service connection, the new service shall be subjected to normal system pressure and
visually inspected for leaks. If any leaks appear, the Contractor shall make repairs. Each
water service shall be turned on and observed by theContractor within the premises to
verify adequate pressure and flow.
END OF SECTION
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Project No. 121333 10 05-5
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The Chauncey –Schematic Design Development
Iowa City, Iowa
SECTION 33 30 00
SITE UNDERGROUND UTILITIES
PART 1 -GENERAL
1.01SUMMARY:
A.Construction of piping and structures for the collection and transmission of wastewater and
storm water.
1.02REFERENCES:
A.Reinforced Concrete Pipe -For Sanitary and Storm Sewers
1.ASTM C76, latest edition, Standard Specification for Reinforced Concrete Culvert,
Storm Drain and Sewer Pipe.
2.ASTM C443, latest edition, Standard Specification for Joints for Circular Concrete
Culvert and Sewer Pipe, Using Rubber Gaskets.
3.ASTM C361, latest edition, Standard Specification for Reinforced Concrete Low-
Head Pressure Pipe.
B.Reinforced Concrete Arch Pipe -For Storm Sewers
1.ASTM C506, latest edition, Specification for Reinforced Concrete Arch Culvert,
StormDrain and Sewer Pipe.
C.Vitrified Clay Pipe
1.ASTM C700, latest edition, Standard Specification for Vitrified-Clay Pipe, Extra
Strength, Standard Strength, and Perforated.
2.ASTM C425, latest edition, Standard Specification for Compression Joints for
Vitrified-Clay Pipe and Fittings.
D.Ductile Iron Pipe
1.ANSI/AWWA-A21.5/C151, latest edition, Ductile-Iron Pipe, Centrifugally Cast in
Metal Molds or Sand-Lined Molds, for Water or Other Liquids.
2.ANSI/AWWA-A21.50/C150, latest edition, Thickness Design of Ductile-Iron Pipe.
3.ANSI/AWWA-A21.53/C153, latest edition, Ductile-Iron Compact Fittings, 3 in.
through 16 in., for Water and Other Liquids.
4.ANSI/AWWA-A21.11/C111, latest edition, Rubber-Gasket Joints for Ductile-Iron
Pipe and Gray-Iron Pressure Pipe and Fittings.
5.ANSI/AWWA-A21.4/C104, latest edition, Cement-Mortar Lining for Ductile-Iron
Pipe and Fittings for Water.
E.Poly Vinyl Chloride (PVC) Pipe –For Sanitary Sewer Service Lines
1.ASTM D1784, latest edition, Specification for Rigid Poly (Vinyl Chloride) (PVC)
Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
2.ASTM D2321, latest edition, Recommended Practice for Underground Installation
of Flexible Thermoplastic Sewer Pipe.
3.ASTM D2729, latest edition, PVC Sewer Pipe and Fittings
4.ASTM D3034, latest edition, Standard Specification for Type PSM Poly(Vinyl
Chloride) (PVC) Sewer Pipe and Fittings
5.ASTM D3212, latest edition, Specification for Joints for Drain and Sewer Plastic
Pipes Using Flexible Elastomeric Seals
F.PVC Truss Pipe –For Sanitary Sewers
1.ASTM D1784, latest edition, Specification for Rigid Poly (Vinyl Chloride) (PVC)
Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds
2.ASTM D2321, latest edition, Recommended Practiice for Underground Installation
of Flexible Thermoplastic Sewer Pipe.
3.ASTM D2680, latest edition, Standard Specification for Acrylonitrile-Butadiene-
Styrene (ABS) and Poly(Vinyl Chloride) (PVC) Composite Sewer Piping
4.ASTM F477, latest edition, Specification for Elastomeric Seals (Gaskets) for
Joining Plastic Pipe
G.Manholes
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RAPC No. 121333 30 00-1
1.ASTM C478, latest edition, Standard Specification for Precast Reinforced Concrete
Manhole Sections.
H.Intake Structures
1.IDOT Standard Specifications.
2.Iowa Department of Transportation Highway Division "Standard Road Plans
Manual", latest edition.
1.03QUALITY ASSURANCE:
A.All products will meet or exceed the minimum standards specified in the applicable
references listed in the previous subsection.
B.All suppliers of reinforced concrete pipe and manholes must be certified by the Iowa
Department of Transportation.
C.Reinforced concrete pipe shall be manufactured by such means to minimize cage twist.
Pipe displaying cage twist in excess of 30 degrees, as demonstrated by the form seam, will
berejected.
D.Details of gasket installation and joint assembly are subject to acceptance by the Engineer.
E.All materials judged to be of poor quality will be marked by the Engineer and promptly
removed from the site by the Contractor and replaced with new.
F.All pipe must pass the leakage tests specified in Part 3 of this section.
1.04SUBMITTALS:
A.Concrete Pipe: Submit current Iowa Department of Transportation certification.
B.Vitrified-Clay Pipe: Submit shop drawings of gasket installation andjoint assembly.
C.Shoring: Submit plans for all shoring, excluding trench boxes, certified by a professional
engineer registered in the State of Iowa. This submittal will not be reviewed for structural
adequacy by the City.
PART 2 -PRODUCTS
2.01MATERIALS:
A.Reinforced Concrete Pipe -For Sanitary and Storm Sewers
1.Joints: All joints will be confined O-ring gasket meeting ASTM C443 or ASTM
C361, as specified. All pipe 36-inch diameter and smaller will have bell and spigot
joints. Pipe larger than 36-inch diameter may have tongue and groove joints.
2.Wall Thickness: Minimum wall thickness will be B-wall as defined in ASTM C76 or
Class C25 as defined in ASTM C361.
3.Pipe Strength: Pipe strength shall be as specified on the plans. If not specified, the
minimum pipe strength shall be Class III as defined in ASTM C76 or as defined in
ASTM C361.
4.Pipe Markings: All pipe shall be marked with the date of manufacture and ASTM
class. If quadrant reinforcement is used, the top shall be marked on the outside of
the pipe.
5.Lift holes are not allowed.
6.Minimum Bedding –Type B per ASTM C 12 with compacted granular material to
the springline of the pipe.
B.Reinforced Concrete Pipe -For Storm Sewers
1.Joints
a.Circular pipe: All joints will be confined O-ring or profile gasket meeting
ASTM C443. All pipe 36-inch diameter and smaller will have bell and
spigot joints. Pipe larger than 36-inch diameter may have tongue and
groove joints.
b.Arch pipe: All joints will be sealed with mastic butyl rubber-based sealant
meeting the requirements of AASHTO M198-75, Type "B". Wrap exterior
of each joint with engineering fabric.
2.Wall Thickness
Rohrbach Associates PCSITE UNDERGROUND UTILITIES
Project No. 121333 30 00-2
a.Circular pipe: Minimum wall thickness will be B-wall as defined in
ASTMC76.
b.Arch pipe: Minimum wall thickness as defined for in ASTM C506.
3.Pipe Strength
a.Circular pipe: Pipe strength shall be as specified on the plans. If not
specified, the minimum pipe strength shall be Class III as defined in ASTM
C76.
b.Arch pipe: Pipe strength shall be as specified on the plans. If not
specified, the minimum pipe strength shall be Class III A as defined in
ASTM C506.
4.Pipe Markings: All pipe shall be marked with the date of manufacture and ASTM
class. If quadrant reinforcement is used, the top shall be marked on the outside of
the pipe.
5.Lift holes are not allowed.
6.Minimum Bedding –Type B per ASTM C 12 with compacted granular material to
the springline of the pipe.
C.Vitrified Clay Pipe
1.Joints: Shop drawing of gasket installation and joint assembly, subject to approval
of the Engineer.
2.All pipe shall be "extra strength" as defined by ASTM C700.
3.Minimum Bedding –Type B per ASTM C12 with compacted granular material to
the springline of the pipe.
D.Ductile Iron Pipe
1.Joints: Use push on joints unless otherwise specified on the plans.
2.Thickness: Unless otherwise indicated or specified, use Class 52.
3.Lining and Coating:
a.Inside of pipe and fittings: Double thickness cement lining and bituminous
seal coat conforming to ANSI A21.4.
b.Outside of pipe and fittings: Standard bituminous coating conforming to
appropriate ANSI.
4.Minimum Bedding –Type 5 per ANSI/AWWA C150/A21.50 with compacted
granular material to the springline of the pipe.
E.PVC Truss Pipe –For Sanitary Sewers
1.AllPVC truss pipe shall be made of PVC compound having a minimum cell
classification of 12454 as defined in ASTM D1784.
2.Joints: Gaskets shall comply with all requirements in ASTM F477 and F913. Joint
shall meet the requirements of ASTM D 2680 and ASTM D3212.
3.Pipe shall have a minimum pipe stiffness of 200 psi at 5% deflection.
4.Minimum Bedding –Crushed stone encasement to the top of the pipe. The
minimum bedding depth shall be as specified on the plans. If not specified, the
minimum bedding depth shall be 4" below the pipe.
F.Poly Vinyl Chloride (PVC) Pipe –For Sanitary Sewer Service Lines
1.All PVC pipe shall be manufactured in accordance with ASTM D3034.
2.Joints: ASTM D3212 gasketed.
3.All 4” and 6” services shall be SDR 23.5.
4.Minimum Bedding –Crushed stone encasement to 6” above pipe. The minimum
bedding depth shall be as specified on the plans. If not specified, the minimum
bedding depth shall be 4" below the pipe.
G.Corrugated Plastic Pipe for Subsurface Drainage
1.Corrugated PVC with a smooth interior wall shall meet the standards of ASTM
F949 and be constructed of resins meeting the requirements of ASTM D1784, cell
class 12454B.
2.Corrugated HDPE with a smooth interior wall shall meet the standards of AASHTO
M-252 and M-294.
3.Minimum Bedding –Drainable stone encasement to 6” above pipe.
4.
H.Manholes
Rohrbach Associates PCSITE UNDERGROUND UTILITIES
Project No. 121333 30 00-3
1.Joints: All joints will be confined O-ring or profile gasket meeting ASTM C443.
2.No lift holes through the entire wall.
3.Mark date of manufacture.
4.Inverts: Precast and cast-in-place inverts must provide a channel at least one-half
the depth of the pipe and match the full cross-sectional area of the pipe. All
junctions and changes in directions of inverts shall be smooth and rounded to the
maximum extent possible to supplement flow through the manholes.
5.All manholes are 4-foot diameter unless noted otherwise.
6.Manhole frame and lid to be Neenah R-1670, self-sealing, East Jordan 1117,
self-sealing or approved equal. If in paved area, casting shall also be non-rocking.
7.Manholes in paving shall have an interior Cretex chimney seal (or approved equal)
that spans from the casting to the cone section.
I.Bedding:
1.Granular bedding material shall consist of porous backfill material, IDOT Standard
Specification Section 4131 and Section 4109, Gradation No. 29.
PART 3 -EXECUTION
3.01INSTALLATION OF PIPE:
A.Inspect before installation. Remove and replace defective sections.
B.Alignment and Grade
1.Install to line and grade indicated on plans using laser and check elevation as
required to maintain grade.
2.Driving down to grade by striking or with excessive force from excavating
equipment is not allowed.
3.Blocking the pipe to grade with wood, stones or other materials is not allowed.
C.Bedding
1.Support on compacted granular bedding material using the type of bedding
specified on the plans. If no bedding is specified, use the minimum bedding
specified in Part 2 of these specifications.
2.Place bedding material to ensure that there are no voids under or alongside the
length of the pipe. Slice with shovel to remove voids. Compact with pneumatic
equipment.
3.Hand shape bell holes so that only pipe barrel receives bearing pressure.
D.Connections
1.A-LOK shall be used for all sanitary sewer connections to manholes unless
approved by the Engineer.
2.Subdrains shall be connected to storm sewer intakes and manholes using IDOT
standard intake outlet detail RF-19C. CMP outlet shall be used unless approved
by the Engineer.
E.Jointing
1.Clean and lubricate all joints prior to assembly.
2.Join per manufacturer's recommendations.
3. Suitable couplings shall be used for jointing dissimilar materials.
F.Backfill as specified in Section 02220.
G.Clean pipeline upon completion.
H.Tolerances
1.Any deviation in a sewer pipes section more than 1/8 inch per foot of pipe diameter
from the horizontal or vertical alignment, as established by the Engineer, will not be
allowed; and all sewer laid incorrectly, as determined by the Engineer, must be relaid at
the Contractor's expense. This tolerance in grade will be allowed only if the sewer is
designed at a slope sufficient to prevent backfall when its limits are reached. Under no
condition will a sewer be accepted when one or more pipe lengths have been installed
without "fall".
2.The completed sewer must be laid so nearly in a perfect line that an ordinary electric
lantern held at center of the sewer at a manhole may be wholly visible to the eye at the
level of the sewer at the next manhole.
Rohrbach Associates PCSITE UNDERGROUND UTILITIES
Project No. 121333 30 00-4
3.Sags and reverse slope on gravity pipe is prohibited. Remove and relay pipe to proper
grade.
3.02TESTING OF PIPE:
A.Lamp all pipe to visually inspect for defects and debris.
B.Leakage Tests: Perform leakage tests on all sanitary sewers as follows:
1.Perform after completion of backfill.
2.Perform after groundwater has returned to normal level.
3.Furnish test plugs, water pumps, appurtenances, and labor. Install bulkheads for
testing and weirs for measurement as necessary. Groundwater elevation from
observation wells or excavations are subject to acceptance by the Engineer.
a.If groundwater is more than two foot above top of pipe at upper end,
conduct infiltration or low-pressure air tests. If maximum pressure exerted
by groundwater is greater than 4 psig, conduct infiltration test.
b.If groundwater is less than two foot above top of pipe at upper end,
conduct exfiltration or low-pressure air tests.
c.If pipe is larger than 27-inch, air test is not allowed.
4.Exfiltration or infiltration test performed on sections of approved length (maximum
½-mile for sewers) and before connection to buildings. Low-pressure air tests
performed on manhole-to-manhole sections of pipeline.
5.Low-pressure air test:
a.Equipment
(1)Designed for testing sewers using low-pressure air.
(2)Provide air regulator or safety valve so air pressure does not
exceed 8 psig.
(3)All air through single control panel.
b.Procedure
(1)Perform from manhole-to-manhole after backfill.
(2)Place pneumatic plugs: (a) sealing length: equal to or greater than
pipe diameter, (b) capable of resisting internal test pressure
without external bracing or blocking.
(3)Introduce low-pressure air into sealed line and achieve internal air
pressure 4 psig greater than maximum pressure exerted by
groundwater above pipe invert.
(4)Limit internal pressure in sealed line below 8 psig.
(5)Allow two minutes minimum for air pressure to stabilize.
Disconnect low-pressure air hose from control panel.
(6)Acceptable Test Result:
(a)Minimum time for pressure to drop from 3.5 to 2.5 psig
greater than maximum pressure exerted by ground water
above pipe invert.
Pipe diameterTime in
in inchesMinutes
42.0
63.0
84.0
105.0
125.5
157.5
188.5
2110.0
2411.5
2713.0
(b)Minimum allowable time for sewers with more than one
Rohrbach Associates PCSITE UNDERGROUND UTILITIES
Project No. 121333 30 00-5
size of pipe: based on largest diameter reduced by 0.5
min.
(c)If groundwater level at time of testing is above the sewer,
air pressure shall be increased 0.43 psig for each foot the
groundwater is above the flow line of the pipe.
c.If pressure drop exceeds 1.0 psig during the test period, the test shall be
considered to have failed. Locate and repair leaks and retest as required.
6.Infiltration Test
a.Dewater and conduct test for at least 24 hours.
b.Locate and repair leaks, and retest as required.
c.Allowable infiltration, including manholes, fittings, and connections:
maximum 200 gallons per inch diameter per mile per 24 hours.
7.Exfiltration Test
a.Subject sewers to internal pressure by: (1) plugging the inlet of the
upstream and downstream manholes, (2) filling sewer and upstream
manhole with clean water until the water elevation in the manhole is two
feet above top of sewer, or two feet above the existing ground water in the
trench, whichever is the higher elevation.
b.Use suitable ties, braces, and wedges to secure stoppers against leakage
from test pressure, whereconditions between manholes may result in test
pressure causing leakage.
c.Rate of leakage from sewer: Determined by the amount of water required
to maintain the initial water elevation for one hour from the start of the test.
d.Allowable exfiltration same as allowable infiltration. If the average head
above the section being tested exceeds two feet above top of pipe, then
the allowable exfiltration can be increased by 5% for each additional foot of
head.
e.Modification to this test only as approved by the Engineer.
f.Locate and repair leaks and retest as required.
C.Deflection Tests: Perform deflection tests on all PVC truss sewers as follows:
1.The mandrel (go/no-go) device shall be cylindrical in shape and constructed with
nine (9)evenly spaced arms or prongs. The mandrel dimension shall be 95% of
the flexible pipe's published ASTM average inside diameter. Allowances for pipe
wall thickness or ovality (from shipment, heat, shipping loads, poor production, etc.)
shall not be deducted from the ASTM average inside diameter, but shall be
counted as part of the 5% allowance. The contact length of the mandrel's arms
shall equal or exceed the nominal diameter of the sewer to be inspected. Critical
mandrel dimensions shall carry a toleranceof ± .001". Proving rings shall be
available.
2.The mandrel inspection shall be conducted no earlier than 30 days after reaching
final trench backfill grade provided, in the opinion of the Engineer, sufficient water
densification or rainfall has occurred to thoroughly settle the soil throughout the
entire trench depth. Short-term (tested 30 days after installation) deflection shall
not exceed 5% of the pipe's average inside diameter. The mandrel shall be hand
pulled by the Contractor through all sewer lines. Any sections of the sewer not
passing the mandrel test shall be uncovered and the Contractor shall replace and
recompact the embedment backfill material to the satisfaction of the Engineer.
These repaired sections shall be retested with the go/no-gomandrel until passing.
3.The Engineer shall be responsible for approving the mandrel. Proving rings may be
used to assist in this. Drawings of the mandrel with complete dimensioning shall be
furnished by the Contractor to the Engineer for each diameterand type of flexible
pipe.
3.03CONSTRUCTION AND INSTALLATION OF MANHOLES, MANHOLE BOXES AND INTAKE
Rohrbach Associates PCSITE UNDERGROUND UTILITIES
Project No. 121333 30 00-6
STRUCTURES:
A.Set bases true to line and elevation on minimum six-inch granular backfill material.
B.Install O-ring or profile gasket in joints between sections conforming to manufacturer's
standard.
C.Cast in place inverts must provide a channel at least one-half the depth of the pipe and
match the full cross-sectional area of the pipe. All junctions and changes in direction shall
be smooth and rounded to the maximum extent possible to supplement flow through the
structure.
D.Plug holes for handling with mortar.
E.Lay grading rings in full bed and joint of mortar without subsequent grouting, flushing or
filling; bond thoroughly.
F.Set frames with top conforming to finished ground or pavement surface as indicated and
directed. Grading rings plus the frame height shall not exceed 24 inches.
G.Set frames in full bed of RAM-NEK or equal to fill and make watertight space between
masonry top and bottom flange of frame.
H.Backfill as specified in Section 02220.
I.Clean manhole upon completion.
J.Inspect for visible leaks after groundwater has returned to normal level. Repair leaks.
3.04MAINTENANCE OF FLOW:
A.Storm Sewers: At the end of each working day, the Contractor shall reestablish the full
capacity of any drainage system affected by construction. Diversion of storm water into the
sanitary sewer system is not allowed.
B.Sanitary Sewers: The Contractor shall at all times maintain fullcapacity in the sanitary
sewer system and protect the system from storm water.
C.If pumps are used for the diversion of flow, the Contractor shall have a stand-by pump
readily at hand. The Contractor shall provide the Police Department and the Supervisor of
the Iowa City Wastewater Treatment Plant with phone numbers where the responsible
person may be reached 24 hours a day to make immediate repairs and/or replacement in
case of diversion system failure. Diversion of sanitary sewage to storm sewers or
waterways is not allowed.
3.05CONFLICTS
A.Provide temporary support for existing water, gas, telephone, power or other utilities or
services that cross the trench.
B.Compact backfill under the existing utility crossing as specified in Section 02200.
C.Separate gravity sewers from water mains by horizontal distance of at least 10 feet unless:
1.Top of sewer is at least 18 inches below the bottom of the water main.
2.Sewer is placed in separate trench or in same trench on bench of undisturbed earth
with at least three feet separation form the water main.
D.Use water main materials for gravity sewers with less than 10 feet of horizontal distance
and top of the sewer less than 18 inches below the bottom of the water main; maintain a
linear separation of at least two feet.
E.Where gravity sewer crosses over water main or service or where the top of sewer is less
than 18 inches below the bottom of the water main or service, the following requirements
shall apply:
1.The sewer may not be placed closer than 6 inches below a water main or 18 inches
above a water main. The separation distance shall be the maximum feasible in all
cases.
2.Use 20-foot length of water main material as specified for gravity sewer centered on
the water main. Both joints shall be located as far from the water mainas possible.
3.The sewer and the water main must be adequately supported and have watertight
joints.
4.Backfill trench with low permeability soil for the 20-foot length centered on the crossing.
F.Sanitary sewer force mains and water mains shall be separated bya horizontal distance of
at least 10 feet unless:
1.The force main is constructed of water main material meeting a minimum pressure
Rohrbach Associates PCSITE UNDERGROUND UTILITIES
Project No. 121333 30 00-7
rating of 200 psi.
2.The force main is laid at least four linear feet from the water main.
06/03
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Rohrbach Associates PCSITE UNDERGROUND UTILITIES
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Division 35
Waterway and Marine Construction
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