33_11_00.01_00_AM_9_17y01m18d.pdf

AM#9 READY TO ADVERTISE CLR039a LRDR Construction Package #1 - Clear AFS, Alaska

SECTION 33 11 00.01 00

WATER DISTRIBUTION

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WATER WORKS ASSOCIATION (AWWA)

AWWA C104/A21.4 (2013) Cement-Mortar Lining for Ductile-Iron Pipe and Fittings for Water

AWWA C111/A21.11 (2012) Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings

AWWA C151/A21.51 (2009) Ductile-Iron Pipe, Centrifugally Cast, for Water

AWWA C153/A21.53 (2011) Ductile-Iron Compact Fittings for Water Service

AWWA C213 (2015) Fusion-Bonded Epoxy Coating for the Interior and Exterior of Steel Water Pipelines

AWWA C500 (2009) Metal-Seated Gate Valves for Water Supply Service

AWWA C502 (2014) Dry-Barrel Fire Hydrants

AWWA C504 (2010) Standard for Rubber-Seated Butterfly Valves

AWWA C509 (2009) Resilient-Seated Gate Valves for Water Supply Service

AWWA C515 (2009) Reduced-Wall, Resilient-Seated Gate Valves for Water Supply Service

AWWA C550 (2013) Protective Epoxy Interior Coatings for Valves and Hydrants

AWWA C600 (2010) Installation of Ductile-Iron Water Mains and Their Appurtenances

AWWA C651 (2014) Standard for Disinfecting Water Mains

AWWA C653 (2013) Disinfection of Water Treatment Plants

AWWA C901 (2008) Polyethylene (PE) Pressure Pipe and

SECTION 33 11 00.01 00 Page 1

READY TO ADVERTISE

Tubing, 1/2 In. (13mm) Through 3 In. (76 mm), for Water Service

AWWA C906 (2015) Polyethylene (PE) Pressure Pipe and Fittings, 4 In. (100 mm) through 63 In., (1,575 mm) for Water Distribution and Transmission

ASME INTERNATIONAL (ASME)

ASME B18.2.2 (2010) Nuts for General Applications:

Machine Screw Nuts, Hex, Square, Hex Flange, and Coupling Nuts (Inch Series)

ASME B18.5.2.1M (2006; R 2011) Metric Round Head Short Square Neck Bolts

ASME B18.5.2.2M (1982; R 2010) Metric Round Head Square Neck Bolts

ASTM INTERNATIONAL (ASTM)

ASTM A126 (2004; R 2014) Standard Specification for Gray Iron Castings for Valves, Flanges, and Pipe Fittings

ASTM A307 (2014) Standard Specification for Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

ASTM A536 (1984; R 2014) Standard Specification for Ductile Iron Castings

ASTM A563 (2015) Standard Specification for Carbon and Alloy Steel Nuts

ASTM A588/A588M (2015) Standard Specification for High-Strength Low-Alloy Structural Steel with 50 ksi (345 MPa) Minimum Yield Point, with Atmospheric Corrosion Resistance

ASTM C177 (2013) Standard Test Method for Steady-State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded-Hot-Plate Apparatus

ASTM C203 (2005; R 2012) Breaking Load and Flexural Properties of Block-Type Thermal Insulation

ASTM C518 (2010) Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus

ASTM C578 (2015b) Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation

ASTM D1621 (2010) Compressive Properties of Rigid Cellular Plastics

SECTION 33 11 00.01 00 Page 2

ASTM D1622/D1622M (2014) Apparent Density of Rigid Cellular Plastics

ASTM D1623 (2009) Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics

ASTM D2000 (2012) Standard Classification System for Rubber Products in Automotive Applications

ASTM D2126 (2009) Response of Rigid Cellular Plastics to Thermal and Humid Aging

ASTM D2657 (2007; R 2015) Heat Fusion Joining Polyolefin Pipe and Fittings

ASTM D2774 (2012) Underground Installation of Thermoplastic Pressure Piping

ASTM D2842 (2012) Water Absorption of Rigid Cellular Plastics

ASTM D3261 (2012; E 2014) Standard Specification for Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing

ASTM D3350 (2012) Polyethylene Plastics Pipe and Fittings Materials

ASTM E398 (2013) Standard Test Method for Water Vapor Transmission Rate of Sheet Materials Using Dynamic Relative Humidity Measurement

ASTM E96/E96M (2014) Standard Test Methods for Water Vapor Transmission of Materials

ASTM F1055 (2015) Electrofusion Type Polyethylene Fittings for Outside Diameter Controlled Polyethylene Pipe and Tubing

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 24 (2016) Standard for the Installation of Private Fire Service Mains and Their Appurtenances

NFPA 704 (2012) Standard System for the Identification of the Hazards of Materials for Emergency Response

UNDERWRITERS LABORATORIES (UL)

UL 246 (2011; Reprint Feb 2013) Hydrants for Fire-Protection Service

UL 262 (2004; Reprint Oct 2011) Gate Valves for Fire-Protection Service

UL 789 (2004; Reprint Feb 2013) Standard for

SECTION 33 11 00.01 00 Page 3

Indicator Posts for Fire-Protection Service

1.2 SYSTEM DESCRIPTION

The water distribution system consists of two separate systems: a fire water system and a potable water system. Where the term polyethylene pipe is used, the specification also applies to high-density polyethylene (HDPE) pipe.

1.2.1 Water Distribution Mains

Provide water distribution mains of the nominal iron pipe size diameters and Standard Dimension Ratio (SDR or DR) indicated of high-density polyethylene plastic (HDPE) pipe. Provide water main accessories and gate valves as specified and where indicated.

1.2.2 Potable Water Service Lines

Provide potable water service lines of the nominal iron pipe size diameters and Standard Dimension Ratio (SDR or DR) indicated on the drawings from water distribution main to building service at the points indicated. Water service lines shall be HDPE. Provide water service line appurtenances as specified.

1.2.3 Fire Service Lines

Provide fire water service of the nominal diameter, pipe material, and locations indicated on the drawings. Provide fire water service appurtenances as specified and where indicated. AM#9... Disinfection of the fire service lines is not required. ...AM#9

1.2.4 Raw Water Line

Provide a raw water line from the well to the Mission Control Facility (MCF). Pipe shall be high-density polyethtylene plastic (HDPE) pipe in the nominal iron pipe size diameter and Standard Dimensional Ratio (SDR or DR) indicated on the drawings. Disinfection of the raw water line is AM#9... ...AM#9 required. Pipe, fittings, and installation use the same specifications as water distribution mains.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only.

Submittals with an "S" designation following the “G” are for inclusion in the Sustainability Notebook, in conformance to Section 01 33 29.01 00 SUSTAINABILITY REPORTING. Other designations following the "G" designation identify the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00.01 00

SUBMITTAL PROCEDURES:

SD-03 Product Data

Piping Materials

Water distribution main piping, fittings, joints, valves, and coupling

Hydrants

SECTION 33 11 00.01 00 Page 4

Indicator posts

Valve boxes

Submit manufacturer's standard drawings or catalog cuts, except submit both drawings and cuts for push-on and rubber-gasketed bell-and-spigot joints. Include information concerning gaskets with submittal for joints and couplings.

SD-06 Test Reports

Bacteriological Disinfection; G, R.

Test results from commercial laboratory verifying disinfection

SD-07 Certificates

Water distribution main piping, fittings, joints, valves, and coupling

Pre-Insulated Pipe Fabrication

Lining

Fire hydrants

HDPE Pipe Fusion Joint Installation

Field Insulation Installer Qualifications

Certificates shall attest that tests set forth in each applicable referenced publication have been performed, whether specified in that publication to be mandatory or otherwise and that production control tests have been performed at the intervals or frequency specified in the publication. Other tests shall have been performed within 3 years of the date of submittal of certificates on the same type, class, grade, and size of material as is being provided for the project.

SD-08 Manufacturer's Instructions

Delivery, storage, and handling

Installation procedures for water piping

Hydrostatic Testing of HDPE Pipe; G, RC

1.4 QUALITY ASSURANCE

1.4.1 Fusion Joints

Certification of Contractor personnel performing the installation, supervision, or inspection of polyethylene pipe fusion joints.

1.4.2 Field Insulation Installer Qualifications

Provide projects and references for personnel field applying polyurethane foam insulation on pipe and joints. Personnel must have at least two

SECTION 33 11 00.01 00 Page 5 years of experience with field foaming pipe in a trench.

1.5 DELIVERY, STORAGE, AND HANDLING

1.5.1 Delivery and Storage

Inspect materials delivered to site for damage. Unload and store with minimum handling. Store materials on site in enclosures or under protective covering. Store plastic piping, jointing materials and rubber gaskets under cover out of direct sunlight. Do not store materials directly on the ground. Keep inside of pipes, fittings, valves and hydrants free of dirt and debris.

1.5.2 Handling

Handle pipe, fittings, valves, hydrants, and other accessories in a manner to ensure delivery to the trench in sound undamaged condition. Take special care to avoid injury to coatings and linings on pipe and fittings;

make repairs if coatings or linings are damaged. Do not place any other material or pipe inside a pipe or fitting after the coating has been applied. Carry, do not drag pipe to the trench. Use of pinch bars and tongs for aligning or turning pipe will be permitted only on the bare ends of the pipe. The interior of pipe and accessories shall be thoroughly cleaned of foreign matter before being lowered into the trench and shall be kept clean during laying operations by plugging or other approved method. Before installation, the pipe shall be inspected for defects.

Material found to be defective before or after laying shall be replaced with sound material without additional expense to the Government. Store rubber gaskets that are not to be installed immediately, under cover out of direct sunlight.

1.5.2.1 High-Density Polyethylene (HDPE) Pipe, Fittings, and Accessories

Handle HDPE pipe, fittings, and accessories in accordance with AWWA C901 and AWWA C906.

1.5.2.2 Miscellaneous Plastic Pipe and Fittings

Handle pipe and fittings in accordance with the manufacturer's recommendations. Store plastic piping and jointing materials that are not to be installed immediately under cover out of direct sunlight.

Storage facilities shall be classified and marked in accordance with

NFPA 704 .

PART 2 PRODUCTS

2.1 WATER DISTRIBUTION MAIN MATERIALS

2.1.1 Piping Materials

Materials not in direct contact with potable water do not need to meet NSF/ANSI 61. Fire water distribution system materials do not need to meet

NSF/ANSI 61.

2.1.1.1 Ductile-Iron Pipe Fittings

AWWA C151/A21.51 , Thickness Class 50. Pipe fittings shall have AWWA C153/A21.53 mechanical-joint ends and pressure rating at least

SECTION 33 11 00.01 00 Page 6 equivalent to that of the adjoining pipe. Provide mechanical joint kits for connection with HDPE pipe. Fittings shall have cement-mortar lining, AWWA C104/A21.4 , standard thickness.

2.1.1.2 High-Density Polyethylene (HDPE) Plastic Piping and Fittings

HDPEpipe and fittings shall conform to AWWA C901 and AWWA C906.

a. HDPE pipe shall meet the following: Manufactured from PE4710 polyethylene compounds that meet or exceed ASTM D3350, cell classification of PE445574; Standard Dimension Ratio (SDR) of 11, and a minimum working pressure rating of 200 psi; all pipe shall have the same trade (brand) name and shall be certified by the manufacturer as compatible for fusion joining.

b. HDPE Fittings: Provide fittings of at least the same pressure rating, manufactured from the same polyethylene compounds, and having the same ASTM D3350 cell classification as the adjoining pipe. Molded fittings and specials shall be used to the extent that they are available from the pipe manufacturer. When molded fittings are not available, factory-produced mitered fittings shall be used. Fabricate by using butt fusing or sidewall fusing per ASTM D2657. Construct fabricated bends 30 degrees and less with at least two segments. For 45-degree to 90-degree bends, provide at least three segments. For a 90-degree bend, provide at least five segments. Field-fabricated fittings are prohibited.

c. Pipe Joints: Join HDPE pipe and fittings using butt-fusion and/or electrofusion couplings. Butt-fusion shall be in accordance with ASTM D3261. Electrofusion couplings shall comply with ASTM F1055.

d. Mechanical Joint (MJ) Adapter Kit consists of molded MJ adapter suitable for a fusion joint, ASTM A536, Grade 65, hot-dipped galvanized ductile iron gland, AWWA C111/A21.11 gasket, and attachment nuts and bolts. Provide AWWA C111/A21.11 , high-strength, corrosion-resistant, ASTM A588/A588M , Grade E, steel T-bolts and AWWA C111/A21.11 , ASTM A536 , Grade C3 nuts. MJ adapter kit items shall be Factory Mutual approved.

e. Flanged Joint Adapter Kit consists of molded flange adapter suitable for a fusion joint, ASTM A536 Grade 65 ductile iron hot dipped zinc galvanized back up flange, gasket, and attachment nuts and bolts.

Provide same type of nuts and bolts as for MJ adapter kit. Full-face, 1/8-inch-thick, virgin SBR gasket material per ASTM D2000 MAA, Durometer 45 hardness, compounded for water service, with a working pressure of 350 psi. Gasket is to be factory-molded to the bolt pattern and diameter needed for the flange joint. Flanged joint adapter kit items shall be Factory Mutual approved. Do not install flanged joints on buried pipe and fittings.

f. Other than transition fittings described elsewhere in this specification section or on the drawings, the transition fitting between HDPE and non-HDPE pipe shall use fittings as provided by the HDPE pipe manufacturer. Fittings must have the same or higher rating as the HDPE pipe.

2.1.1.3 Pre-Insulated Pipe and Fittings

Provide pre-insulated pipe and fittings as a factory-insulated piping

SECTION 33 11 00.01 00 Page 7 system consisting of carrier pipe, insulation, and, as required by insulated pipe manufacturing method, an outer jacket. Where heat trace is required, heat trace channels shall be sized to accommodate heat trace installation without binding when the cable is pulled.

Provide pipe system from a single manufacturer for pipe of all sizes.

Insulation cutback at the joints shall be the minimum allowable by manufacturer for jointing.

Mechanically abrade pipe surface and inner surface of the jacket to enhance adhesion of polyurethane foam insulation.

Align carrier pipe as shown on the drawings. Allowable tolerance is +/- 1/4 inch at ends and 3/8 inch in all other areas.

Minimum 60 mil thick ASTM D3350 HDPE outer jacket, 24 gauge corrugated galvanized steel pipe, or 16 gauge spiral lock seam aluminum alloy metal pipe.

Polyurethane insulation between carrier pipe and outer jacket:

a. Core Density, ASTM D1622/D1622M : 2.0 to 4.0 lbs/ft 3

b. Minimum Compressive Strength, ASTM D1621: 25 psi

c. Minimum Tensile Strength, ASTM D1623: 50 psi

d. Maximum water absorption, ASTM D2842: 0.05 lb/ft 2

e. Maximum water vapor permeance, ASTM E398 or ASTM E96/E96M: 1.0 perm

f. Dimensional Stability at -20 degrees F, ASTM D2126: 1 percent

g. Dimensional Stability at +100 degrees F, ASTM D2126: 3 percent

h. Maximum K factor as produced, ASTM C177 or ASTM C518: 0.16

Btu-in/hr-ft 2-degrees F

Insulation for pipe joints shall be factory-fabricated polyurethane insulation half shells with closure band.

2.1.2 Valves, Hydrants, and Other Water Main Accessories

2.1.2.1 Gate Valves on Buried Piping

AWWA C515, iron body, fully bronze mounted, non-rising stem,mechanical joint ends, resilient wedge gate valves for pipe diameters 6 to 12 inches. All external and internal valve surfaces shall be painted with an epoxy coating in compliance with AWWA C550. Valves shall open by counterclockwise rotation of the valve stem. Stuffing boxes shall have 0-ring stem seals. Stuffing boxes shall be bolted and constructed so as to permit easy removal of parts for repair. Where a post indicator is shown, the valve shall have an indicator post flange conforming to the applicable requirements of UL 262 . Valves shall be of one manufacturer.

2.1.2.2 Rubber-Seated Butterfly Valves

For pipe greater than 12 inches in diameter, provide rubber-seated butterfly valves conforming to the performance requirements of AWWA C504.

For 20-inch diameter and smaller, ASTM A126, Class B, cast-iron body, rubber seat bonded to the valve body, Type 304 stainless steel operating shaft. Packing to be chevron V or O-ring type and suitable for permanent duty. Mechanical joint ends. Valve operators shall restrict closing to a

SECTION 33 11 00.01 00 Page 8 rate requiring approximately 60 seconds, from fully open to fully closed.

All external and internal surfaces shall be painted with an epoxy coating in compliance with AWWA C550.

2.1.2.3 Fire Hydrants

Dry-barrel type . Paint hydrants with at least one coat of primer and two coats of enamel paint. Paint hydrant cap Sherwin-Williams 4081 Safety Red and above grade portion of the barrel Brown, Federal Standard Color (FSC) color number FSC 595B X0045. Stencil hydrant number, minimum flow in gallons per minute (gpm), and main size on the hydrant barrel using black stencil paint.

a. Dry-Barrel Type Fire Hydrants: Dry-barrel type hydrants, AWWA C502 or UL 246 , "Base Valve" design, shall have 6 inch inlet, 5 1/4 inch valve opening, one 4 1/2 inch pumper connection, and two 2 1/2 inch hose connections. Pumper connection and hose connections shall be individually valved with independent nozzle gate valves. Inlet shall have mechanical-joint end only ; end shall conform to the applicable requirements as specified for the joint. Size and shape of operating nut, cap nuts, and threads on hose and pumper connections shall be as specified in AWWA C502 or UL 246 .

2.1.2.4 Indicator Posts

Where indicated in the drawings, provide gate valves with a UL 789 and Factory Mutual approved ductile iron indicator post. The above-ground barrel shall be coated with fusion-bonded epoxy and the underground portion coated with coal tar epoxy. Top-coat each indicator post with the same paint type and color used for the fire hydrant.

2.1.2.5 Valve Boxes

Provide a valve box for each valve on buried piping , except where indicator post is shown. Valve boxes shall be of cast iron of a size suitable for the valve on which it is to be used and shall be adjustable.

Cast-iron boxes shall have a minimum cover and wall thickness of 3/16 inch.

Provide a round head. Cast the word "WATER" on the lid. The least diameter of the shaft of the box shall be 5 1/4 inches. All surfaces of the valve box case and lid shall have at least an 18 mil but not more than a 16 mil coat of coal tar epoxy.

2.1.2.6 Sleeve-Type Mechanical Couplings

Couplings shall be designed to couple plain-end piping by compression of a ring gasket at each end of the adjoining pipe sections. The coupling shall consist of one middle ring flared or beveled at each end to provide a gasket seat; two follower rings; two resilient tapered rubber gaskets;

and bolts and nuts to draw the follower rings toward each other to compress the gaskets. The middle ring and the follower rings shall be true circular sections free from irregularities, flat spots, and surface defects; the design shall provide for confinement and compression of the gaskets. For ductile iron pipe, the middle ring shall be of ductile iron, and the follower rings shall be of ductile iron. Ductile iron shall conform to ASTM A536. Gaskets shall be designed for resistance to set after installation and shall meet the applicable requirements specified for gaskets for mechanical joint in AWWA C111/A21.11 . Bolts shall be track-head type, ASTM A307, Grade A, with nuts, ASTM A563, Grade A; or round-head square-neck type bolts, ASME B18.5.2.1M and ASME B18.5.2.2M

SECTION 33 11 00.01 00 Page 9 with hex nuts, ASME B18.2.2 . Bolts shall be at least 5/8 inch in diameter. Bolt holes in follower rings shall be of a shape to hold fast the necks of the bolts used. Mechanically coupled joints using a sleeve-type mechanical coupling shall not be used as an optional method of jointing except where pipeline is adequately anchored to resist tension pull across the joint. Mechanical couplings shall provide a tight flexible joint under all reasonable conditions, such as pipe movements caused by expansion, contraction, slight setting or shifting in the ground, minor variations in trench gradients, and traffic vibrations.

Couplings shall be of strength not less than the adjoining pipeline.

Apply an AWWA C213 fusion-bonded epoxy to the lining and exterior of the coupling.

2.1.2.7 Tracer Wire for Nonmetallic Piping

See Section 31 00 00.01 00 EARTHWORK, paragraphs DETECTION WIRE FOR NON-METALLIC PIPING, BURIED TAPE AND DETECTION WIRE, and TESTING.

2.2 POLYURETHANE INSULATION FOR FIELD APPLICATION AND NON-JACKETED

PRE-INSULATED PIPE

Polyurethane insulation for shop and field applications, and non-jacketed pre-insulated pipe and fittings, shall be a two-component, winter grade, blown polyurethane spray foam system. Install pipe, fittings, and heat trace channels as shown in the drawing pipe details before field application of polyurethane insulation. Cured foam insulation shall have physical properties as listed below:

Characteristic Standard Value

Minimum Density ASTM D1622/D1622M2.0 lb/ft 2

Minimum Compressive Strength ASTM D1621 25 psi

Minimum Tensile Strength ASTM D1623 50 psi

Maximum Water Absorption ASTM D2842 0.05 lb/ft 2

Maximum Water Vapor Permeance ASTM E398 or

ASTM E96/E96M

1.0 perm

Maximum K Factor as Produced ASTM C177 or

ASTM C518

0.16 Btu-in/hr-ft 2-degrees F

2.3 BOARD INSULATION FOR WATER DISTRIBUTION SYSTEM

Board insulation shall be extruded, rigid polystyrene conforming to ASTM C578, Type VII, Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation. Insulation shall have minimum compression strength of 60 psi per ASTM D1621, minimum flexural strength of 75 psi per ASTM C203, and per ASTM C518, 20-year aged thermal resistance R value of at least 5 per inch-ft 2-hr-ºF/Btu.

SECTION 33 11 00.01 00 Page 10

PART 3 EXECUTION

3.1 INSTALLATION OF PIPELINES

3.1.1 General Requirements for Installation of Pipelines

These requirements shall apply to all pipeline installation except where specific exception is made in the "Special Requirements..." paragraphs.

3.1.1.1 Location of Water Lines

Terminate the work covered by this section at the water service riser inside the building, 24 inches above the floor slab, unless otherwise indicated on the drawings. Where the location of the potable water line is not clearly defined by dimensions on the drawings, do not lay water line closer horizontally than 10 feet from any sewer line, manhole, or cleanout. Where water lines cross under gravity sewer lines, encase sewer line fully in concrete for a distance of at least 10 feet on each side of the crossing or construct the sewer line of pipe with rubber-gasketed or fusion joints, pressure tested to water system standards, and no joint located within 9 feet horizontally of the crossing. Also, provide at least 18 inches of vertical separation between water and sewer lines.

Separation distance is measured between outside of the pipes/manhole.

Separation distances do not apply to the fire water distribution system.

Do not lay water lines in the same trench with fuel lines or electric wiring. Copper tubing shall not be installed in the same trench with ferrous piping materials. Where nonferrous metallic pipe, e.g. copper tubing, cross any ferrous piping, provide a minimum vertical separation of 12 inches between pipes.

Where water piping is required to be installed within 3 feet of existing structures, the water pipe shall be sleeved. Provide ductile-iron or Schedule 40 steel sleeves. Annular space between pipe and sleeves shall be filled with mastic. The Contractor shall install the water pipe and sleeve ensuring that there will be no damage to the structures and no settlement or movement of foundations or footings.

3.1.1.2 Earthwork

Perform earthwork operations in accordance with Section 31 00 00.01 00 EARTHWORK and Section 31 23 00.01 20 EXCAVATION AND FILL.

3.1.1.3 Pipe Laying and Jointing

Remove fins and burrs from pipe and fittings. Before placing in position, clean pipe, fittings, valves, and accessories, and maintain in a clean condition. Provide proper facilities for lowering sections of pipe into trenches. Do not under any circumstances drop or dump pipe, fittings, valves, or any other water line material into trenches. Cut pipe in a neat workmanlike manner accurately to length established at the site and work into place without springing or forcing. Replace by one of the proper length any pipe or fitting that does not allow sufficient space for proper installation of jointing material. Blocking or wedging between bells and spigots will not be permitted. Lay bell-and-spigot pipe with the bell end pointing in the direction of laying. Grade the pipeline in straight lines; avoid the formation of dips and low points. Support pipe at proper elevation and grade. Secure firm, uniform support. Wood support blocking will not be permitted. Lay pipe so that the full length of each section of pipe and each fitting will rest solidly on the pipe

SECTION 33 11 00.01 00 Page 11 bedding; excavate recesses to accommodate bells, joints, and couplings.

Provide anchors and supports where indicated and where necessary for fastening work into place. Make proper provision for expansion and contraction of pipelines. Keep trenches free of water until joints have been properly made. At the end of each work day, close open ends of pipe temporarily with wood blocks or bulkheads. Do not lay pipe when conditions of trench or weather prevent installation. Depth of cover over top of pipe shall not be less than indicated on the drawings. Where pipe will be field-insulated, use blocks of board insulation at sufficient intervals to support the pipe, maintain pipe slope, and provide clearance between the pipe or fitting and the bedding.

3.1.1.4 Installation of Tracer Wire

Install a continuous length of tracer wire for the full length of each run of nonmetallic pipe. Locate the wire above the pipe in such a manner that it will not be displaced during construction operations. See Section 31 00 00.01 00 EARTHWORK, paragraphs BURIED TAPE AND DETECTION WIRE and

TESTING.

3.1.1.5 Connections to Installed Water Lines

Make connections to water lines installed by other contractors after approval is obtained from the Contracting Officer.

3.1.1.6 Penetrations

Pipe passing through concrete structure shall be provided with ductile-iron or Schedule 40 steel wall sleeves. Annular space between walls and sleeves shall be filled with rich cement mortar. Annular space between pipe and sleeves shall be filled with a flexible formula polyurethane foam insulation.

3.1.1.7 Flanged Pipe

Flanged pipe shall only be installed above ground or with the flanges in valve pits.

3.1.2 Special Requirements for Installation of Water Mains

3.1.2.1 Installation of Ductile-Iron Fittings

Unless otherwise specified, install fittings in accordance with paragraph entitled "General Requirements for Installation of Pipelines" and with the requirements of AWWA C600 for pipe installation, joint assembly, valve-and-fitting installation, and thrust restraint.

a. Jointing: Make joints between HDPE pipe and ductile iron fittings using a mechanical joint adapter kit as described in paragraph

HIGH-DENSITY POLYETHYLENE (HDPE) PLASTIC PIPE AND FITTINGS.

3.1.2.2 Installation of High-Density Polyethylene (HDPE) Plastic Piping

a. General Installation:

HDPE pipes shall be installed in accordance with ASTM D2774. Heavy machine compaction such as by a roller shall occur only after at least 18 inches of compacted backfill has been installed over the pipe.

SECTION 33 11 00.01 00 Page 12

b. Jointing:

See paragraph HIGH-DENSITY POLYETHYLENE (HDPE) PIPING AND FITTINGS.

c. Certification

The Contractor is responsible for the butt fusion and electrofusion coupling joints done by his organization and shall provide for the instruction, testing, and installation, training sessions as required to obtain the following certification for his personnel, including quality control personnel: a polyethylene fusion certification and authorization issued by the manufacturer of the supplied polyethylene piping. Only certified and authorized personnel will be allowed to perform the installation, supervision, or inspection of polyethylene fusion joints. All Contractor personnel performing installation, supervision or inspection of polyethylene fusion joints shall undergo training and certification or recertification prior to beginning work on HDPE pipe. The certificate and authorization for polyethylene fusion shall be submitted to the Contracting Officer prior to any installation or work on HDPE pipe.

3.1.2.3 Installation of Valves and Hydrants

a. Installation of Valves: Install gate valves, AWWA C500 and UL 262 , in accordance with the requirements of AWWA C600 for valve-and-fitting installation and with the recommendations of the Appendix ("Installation, Operation, and Maintenance of Gate Valves") to AWWA C500. Install gate valves, AWWA C509 or AWWA C515, in accordance with the requirements of AWWA C600 for valve-and-fitting installation and with the recommendations of the Appendix ("Installation, Operation, and Maintenance of Gate Valves") to AWWA C509 or AWWA C515.

Make and assemble joints to gate valves as specified for making and assembling the same type joints between pipe and fittings.

b. Installation of Hydrants: Install hydrants in accordance with AWWA C600 for hydrant installation and as indicated. Make and assemble joints as specified for making and assembling the same type joints between pipe and fittings. Install hydrants with the 4 1/2 inch connections facing the adjacent fire lane. If there are two paved adjacent surfaces, contact the Contracting Officer for further instructions.

3.1.3 Special Requirements for Installation of Water Service Piping

3.1.3.1 Installation of Plastic Piping

Install plastic pipe per paragraph INSTALLATION OF HIGH-DENSITY

POLYETHYLENE (HDPE) PLASTIC PIPING.

3.1.4 Bacteriological Disinfection of Potable Water Distribution System

Prior to disinfection, obtain Contracting Officer approval of the proposed method for disposal of waste water from disinfection procedures.

Disinfect new water piping and existing water piping affected by Contractor's operations in accordance with AWWA C651 and fill piping system with solution containing minimum of 50 parts per million of available chlorine and allow solution to stand for minimum of 24 hours.

Flush solution from the systems with domestic water until maximum residual chlorine content is within the range of 0.2 and 0.5 parts per million, or the residual chlorine content of domestic water supply. Obtain at least

SECTION 33 11 00.01 00 Page 13 two consecutive satisfactory bacteriological samples from new water piping, analyze by a certified laboratory, and submit the results prior to the new water piping being placed into service. Disinfection of systems supplying nonpotable water is not required.

3.1.5 Chlorinated Water Disposal

Neutralize chlorinated water with sodium thiosulfate following AWWA C653, Appendix A, and dispose of it by infiltration into the surrounding soil surface. Coordinate water disposal with other site work to avoid damaging work by others. Water shall not be disposed of in lakes, streams, or storm drain systems. When infiltration pits are used, the pit shall be backfilled with soil types the drawings and specifications require for the pit location.

3.2 FIELD QUALITY CONTROL

3.2.1 Field Tests and Inspections

Prior to hydrostatic testing, obtain Contracting Officer approval of the proposed method for disposal of waste water from hydrostatic testing. The Contracting Officer will conduct field inspections and witness field tests specified in this section. The Contractor shall perform field tests, and provide labor, equipment, and incidentals required for testing . The Contractor shall produce evidence, when required, that any item of work has been constructed in accordance with the drawings and specifications.

3.2.2 Testing Procedure

3.2.2.1 Flushing

Prior to hydrostatic testing and disinfection, all newly installed water lines shall be open-bore flushed to remove foreign matter in accordance with AWWA C651. The minimum rate of flow shall be 2.5 feet per second.

The Contractor is responsible for notifying the Contracting Officer to schedule flushing at least 48 hours before flushing. Open-bore flushing shall be accomplished at each extremity of the water line. Under no circumstances shall open-bore flushing be done through fire hydrants or reduced outlets. Flushing shall be performed in the presence of the Contracting Officer or his representative.

3.2.2.2 Hydrostatic Testing

Test water mains and water service lines in accordance with the applicable specified standard. Where water mains and water service lines provide fire service, test in accordance with the special testing requirements given in paragraph entitled "Special Testing Requirements for Fire Service."

3.2.2.3 Hydrostatic Testing of HDPE Pipe

Fill the line slowly with water. Expel air completely from the line during filling and again before applying test pressure. Air shall be expelled by means of taps at points of highest elevation.

The test and procedure consists of two steps: The initial expansion phase and the test period. In order to accommodate the initial expansion of the pipe under test, the pipe shall be pressurized to the test pressure and allowed to stabilize (2 to 4 hours or more per manufacturer's

SECTION 33 11 00.01 00 Page 14 recommendation). After the completion of the initial expansion phase, the actual test period shall begin.

The pipe shall be repressurized to the test pressure and held for a test period of two hours. The test period must not exceed three hours. The pressure drop which occurs will not only be due to pressure expansion, but also due to fluctuations of temperature during the test. After the test period, a measured amount of make up water shall be added to return the piping system to the test pressure. The amount of make-up water shall not exceed the allowance recommended by the pipe manufacturer. This recommendation shall be submitted to the Contracting Officer prior to any water pipe being brought to the site.

NOTE: Under no circumstances shall the total time under test (stabilization period and test period) exceed eight hours at 1.5 times the pipe pressure rating. If the test is not completed due to leakage, equipment failure, or any other reason within this time period, the test section shall be permitted to “relax” for an additional 8-hour period prior to starting the next testing sequence.

3.2.2.4 Leakage Testing

For leakage test, use a hydrostatic pressure not less than the maximum working pressure of the system. Leakage test may be performed at the same time and at the same test pressure as the pressure test.

3.2.3 Special Testing Requirements for Fire Service

Flush and test water mains and water service lines providing fire service or water and fire service in accordance with NFPA 24 . The additional water added to the system must not exceed the limits given in NFPA 24

3.3 CLEANUP

Upon completion of the installation of water lines, and appurtenances, all debris and surplus materials resulting from the work shall be removed.

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