05-455B WATER PIPE, VALVES, AND FITTINGS SECTION

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1 SECTION GENERAL 1.1 SCOPE: A. This work consists of the installation of water pipe and fittings of the sizes and classes indicated. B. This work is also covered by the 1996 Coos Bay North Bend Water Board Standard Construction Specifications to the point of metered service and their requirements for backflow prevention when applicable. C. This work also covers irrigation systems and/or fittings. 1.2 GENERAL: A. Piping shall be installed as indicated on the drawings. If the Contractor desires to change any of the piping layouts shown on the drawings, he shall submit to the Engineer, for approval his detailed proposed layouts. B. Where new fittings are to be cut into or attached to existing piping or where connections are to made to existing piping, the Contractor shall furnish and install the necessary sleeves, flanges, nipples, couplings, fittings, etc. needed to accomplish the cutting in or connections, whether specifically indicated on the drawings or not. C. Where copper or copper alloy pipe or fittings is to be attached to iron or steel pipes they may only be connected through dielectric couplings specifically made for this purpose and service. D. All pipe which will operate under pressure shall be properly blocked at all fittings where the pipeline changes direction, changes size, or ends, using concrete thrust blocks or tie rods. Concrete thrust blocks shall be sized to give bearing against undisturbed vertical earth banks sufficient to absorb the thrust from line pressure. Thrust block sizing shall be as shown on the drawings or calculated based upon an allowable earth bearing of 2,000 pounds per square foot. The line pressure shall be the product of the nominal cross sectional area of the pipe and the test pressures as specified for each type of pipe. The concrete shall be placed, unless specifically indicated otherwise on the drawings, so that the pipe joints and fittings will be accessible.

2 SECTION RELATED DOCUMENTS: A. Drawings and general provisions of the Contract, including General Conditions and Special Conditions, other Division 1 specification sections, apply to work of this section. B Coos Bay-North Bend Water Board Standard Construction Specifications C. Section 02225: Trench Excavation and Backfill D. Section 3300: Cast in Place Concrete 1.3 QUALITY ASSURANCE: A. Reference Standards: 1.4 SUBMITTALS: 1. American Association of State Highway & Transportation Officials (AASHTO); 2. American Society for Testing and Materials (ASTM); 3. Federal Specifications (FS); 4. American Water Works Association (AWWA); 5. National Science Foundation (NSF); 6. American National Standards Institute (ANSI); 7. American Public Works Association, Oregon Chapter (APWA); 8. Uniform Plumbing Code, as adopted by the State of Oregon (UPC). 9. Underwriters Laboratories Inc. (UL) A. Manufacturer s Literature: Manufacturer s descriptive material and installation recommendations. B. Certificates: Manufacturer s certification that products meet specified requirements.

3 SECTION MATERIALS 2.1 WATER PIPE: A. Water piping 2 ½ inches and smaller: Water piping 2 ½ " and smaller shall conform to the latest edition of the State of Oregon Plumbing Specialty Code and the following: 1. Plastic Pipe: Plastic pipe may not be used in areas exposed to sunlight. Plastic pipe shall be Polyethylene (PE) conforming to: ASTM D2239 PE 3406 or PE 3408; PVC conforming to ASTM D2241 PVC 1120, Class 200 solvent weld or Copper tubing, Type K, conforming to AWWA C Metal Pipe: Metal pipe shall be used in areas in direct sunlight exposure or areas easily accessible for maintenance. Metal pipe shall be; Steel pipe conforming to ASTM A120, schedule 40 butt weld, grooved mechanical joint coupling or flanged, or Copper tubing, Type K or L, conforming to AWWA C Galvanized iron pipe may be used in conformance with the UPC where shown on the drawings. Steel shall only be placed above ground or in easily accessible areas. B. Water piping 3 inches to 12 inches: Plastic pipe may not be used in areas exposed to direct sunlight. 1. Plastic Pipe: Plastic pipe shall be PVC conforming to AWWA C 900, PVC conforming to ASTM D2241, SDR 21, Class 200 solvent weld or gasketed end, or Polyethylene (PE) conforming to ASTM D1248 grade P34, type III, Class C, Category 5, PE3408 with a minimum SDR of 17 conforming to AWWA C Metal Pipe: Metal pipe shall be Steel, conforming to ASTM A120 or ASTM 53, ERW, Grade B, black, schedule 40; or Ductile Iron conforming to AWWA Cl5l, Class 51 unless otherwise noted, polyethylene encased in accordance with AWWA C105, cement lined as per AWWA C104. Steel shall only be placed above ground or in easily accessible areas.

4 SECTION PIPE FITTINGS: A. All pipe fittings shall be at least equal in class to the pipe which they are used. Joint materials shall be compatible with the adjacent pipe. All fittings shall have minimum pressure ratings of 150 psi. All fittings 4 inches and larger shall be flanged, mechanical joint, or welded unless otherwise specified. Victaulic type couplings may be used where shown on the drawings or with the permission of the Engineer. B. For PVC, Schedule 80 fittings conforming to ASTM D2466 or D2467 may be used. PVC solvent cement shall be approved for drinking water use by NSF. C. All in ground fittings, 4 and larger shall be cement lined ductile iron conforming with AWWA C153, AWWA C111 and AWWA C104. D. All fittings used on HDPE Pipe shall be HDPE identical to the specified pipe. HDPE fittings shall be molded construction. Special metal fasteners, if required shall be 304 stainless steel. E. All fittings for pipe 2 ½ and smaller shall comply with the UPC. F. All fittings shall be provided with appropriate restraint or thrust blocking as required. 2.3 FLEXIBLE PIPE COUPLINGS: A. Where shown on the drawings or specified in the contract documents, for ductile iron or PVC pipe, flexible couplings shall be Dresser Style 153, Rockwell Series 430, Romac Style 501, or approved. For steel pipe, flexible couplings shall be Dresser Style 38, Rockwell Series 411, or approved. B. Where different pipe types connect, flange coupling adapters may be used, Dresser Style 127, Romac Style 501FCA or approved.. C. Where flexible couplings are installed underground, Type 316 stainless steel bolts shall be used. D. All gaskets shall be of neoprene rubber or equal, and comply with the manufacturer's recommendations and NSF standards.

5 SECTION GATE VALVES: A. Gate valves shall be designed and constructed for 150 psi working pressure. Gate valves may be used on all piping sizes 2-inch through 10-inch. Gate valves shall be iron body, resilient seated complying with AWWA C Valves shall be suitable for buried service with a 2 operating nut unless otherwise shown on the drawings, counterclockwise open turn. Valves shall be non-rising stem unless specified as an outside-screw-and-yoke (OS&Y). Valves shall be Mueller A-2360, Kennedy Ken-Seal II, Clow Resilient Wedge or approved. B. Valve interior shall be protected with an epoxy coating. The coating shall conform to AWWA C C. Anchor blocks for valves shall be sized in accordance with the contract drawings. 2.5 BALL VALVES: A. Ball valves may be used on pipe 2 and smaller and where specified. Valves shall shall have brass bodies and threaded ends. Valve ball shall be Type 304 or 316 stainless steel. Ball valves shall be as Model 850T manufactured by Wilkins, or approved. 2.6 Backflow Preventor Valves/Assemblies: A. Backflow Preventors shall be the reduced pressure type and comply with the North Bend Coos Bay Water Board requirements. B. Assemblies shall be rated for operating service of 150 psi. C. Assemblies shall be Zurn/Wilkins 2 model 975xl, with 2S strainer and dielectric unions, or approved. D. Backflow preventors shall be installed on a minimum of a 4 concrete slab, with a 22 gauge galvanized sheet metal enclosure. Enclosure shall be insulated with a minimum of 1 of foam plastic insulation. Allow a minimum of 6 of clearance all around backflow device and piping with cover. 2.7 QUICK COUPLING (QC) VALVES:

6 SECTION A. Quick coupling valves shall be the size shown on the drawings. Bodies shall be constructed from red brass, be two piece and have locking rubber covers where installed in athletic fields. B. Quick coupling valves shall be Rain Bird Model 44 LRC, Model 44 NP-118 (1 ) or approved equal. 2.8 SADDLES: A. Saddles shall conform to AWWA C Tapping threads shall be CC for 1 ½ and smaller taps, IPT for 2 inch taps. B. Service saddles shall be the wide strap type, all stainless steel construction, Romac style 306 all stainless steel, Ford FS303 or approved. 2.9 SERVICE BRASS: A. Brass items include corporation stops, curb stops, angle meter stops, coupling nuts, tail pieces, and wye branches. All materials used in the manufacture of this equipment shall be copper base complying with ASTM B B. Corporation stops shall be plug type with CC inlet threads and iron pipe outside threads conforming to AWWA C Corporation stops shall be Ford F400, McDonald 3121, or Mueller 300 Series. C. Meter stops shall have a copper flare or tube compression fitting inlet and iron pipe outlet threads. Meter stops shall be as manufactured by Ford, McDonald, or Mueller for the type of pipe used MISCELLANEOUS MATERIALS: A. Toning Wire: Toning wire shall be solid copper, minimum No. 14 AGW wire size with blue colored insulation. B. Hydrostatic or Air Testing: Perform the tests and provide all water hoses, tank trucks, compressor, plugs, gauges, and other necessary equipment to perform the tests. C. Solvent Weld Cement for PVC or CPVC socket type fittings: Solvent weld cement shall meet the requirements of ASTM D2564

7 SECTION WORKMANSHIP for PVC or ASTM F493 for CPVC and be NSF approved for potable water. D. Nuts, Bolts, Rods, and Washers: All bolts, nuts, rods and washers shall be corrosion resistant and conform to ANSI B 16.1 except that flanges underground, in concrete valve boxes, or in water shall have cast iron bolts and nuts, Type 304 or 316 stainless steel, or Everdur bolts and nuts. Cast iron bolts and nuts shall be made of material having at least 50,000 psi tensile strength. Galvanized or cadmium-plated bolts are not acceptable substitutes for stainless steel. E. Thrust Blocks: Thrust blocks shall be constructed out of a minimum of 2500 psi concrete. G. Valve Boxes and Vaults: 3.1 LINE AND GRADE: 1. Valve boxes and vaults within a traffic area shall be cast iron. 2. Plastic boxes or concrete boxes and covers may be used in areas where vehicular traffic is prohibited. 3. Cast iron boxes and box components shall conform with ASTM A48, shall be a minimum of 5 ¼ in inside diameter and shall have a drop in circular, 7 3/8 outside diameter lid with WATER cast on its top. 4. Concrete boxes and vaults shall be constructed out of a minimum of 3000 psi concrete. Concrete boxes for shut-off valves shall be Christy G5 or B9X, Brooks 36 or approved. A. Survey line and grade control hubs will be provided by the Contractor. Piping shall be placed as shown on the drawings except for adjustments to avoid Architectural and structural features. Mainline Pipe should not be laid less than 30 inches from the ground surface without approval from the Engineer. B. Water pipe shall be laid on a consistent slope as shown on the drawings.

8 SECTION PIPE PREPARATION, HANDLING, AND DISTRIBUTION: A. Distribute pipe material on the job no faster than it can be used to good advantage. Unload pipe that cannot physically be lifted by workers with a forklift, flexible strap, or other approved means. Do not drop pipe of any size from the bed of a truck to the ground or from the ground surface into the trench. Do not distribute more than one week supply of material in advance of laying unless otherwise approved by the Engineer. B. Thoroughly inspect all pipe and fittings prior to lowering into the trench to insure no cracked, broken, or defective materials are being used. Clean ends of pipe thoroughly, and remove any foreign matter and dirt from the barrel of the pipe. 3.3 LAYING AND JOINTING PIPE AND FITTINGS: A. All pipe shall be installed in accordance with the manufacturer's recommendations. The laying of pipe shall be in finished trenches free from water or debris and shall begin at the lowest point. Pipe shall be laid on a solid foundation with uniform bearing along the full length of the barrel. If the pipe bears top or bottom markings, it shall be placed with the markings in the proper location. Under ordinary conditions, the pipe shall be laid with the bell end of the pipe faces the direction of laying. Where potential conflicts in line or grade are shown on the drawings from structures, piping, conduit, etc., the Contractor shall pothole a minimum of two laying lengths ahead of the pipe laying so that necessary adjustments in the alignment of the pipe may be made. The Contractor shall make adjustments in location or grade of new piping as directed by the Engineer, and these adjustments shall be at no additional cost to the Owner. B. Unless otherwise specified, the jointing of pipe with rubber gaskets shall be in accordance with the manufacturer's recommendations. The ends of the pipe shall be thoroughly cleaned to remove all foreign materials, rust scale, sealing compound, etc., from surfaces that are to be incorporated into the joint. The spigot recess, the rubber gasket, and the bell shall be lubricated, with an approved, water soluble and non-toxic lubricant, in accordance with the manufacturer's recommendations. After lubrication the gasket shall not be twisted, rolled, cut, crimped, or otherwise injured or forced out of position during the closure of the joint.

9 SECTION C. Cutting pipe for insertion of valves, fittings or closure pieces shall be done in conformance with all safety recommendations of the manufacturer of the cutting equipment. Cut ends and rough edges shall be ground smooth. For push-on joint connections, the cut end shall be beveled by methods recommended by the manufacturer. 3.4 THRUST RESTRAINT: A. All elbows, tees, wyes, or fittings where the pipeline changes direction, size, or ends shall be suitably restrained by means of blocking, restraining couplings or tie rods. B. Concrete thrust blocks shall be sized so as to give bearing against undisturbed earth banks sufficient to absorb the thrust from line pressure, as shown in the detailed drawings. Thrust pressures shall be calculated at least 150 psi and 50 psi above the line working pressure. The concrete shall be placed, unless specifically indicated otherwise on the Drawings, so that the pipe joints and fittings will be accessible. C. Tie rods may be placed on above ground piping or in the trench. Tie rods shall be of corrosion resistant steel, and tied back to the nearest secure flange, elbow, or at least two pipe joints from the change in pipe direction on straight sections without secured joints. 3.5 CORROSION PROTECTION: A. All metallic piping is to be coated with a polyurethane coating system if installed above ground. Ductile iron factory coating is specified. The polyurethane coating system is as follows: 1. Prime coat: Inorganic zinc primer applied the same day as the piping is cleaned for painting. Primer shall be a 3 mil thickness of Carbozinc 11 (Carbonline), Zinc-Lock 351 (Porter), Tneme-Zinc 90E92 (Tnemec), or equal. 2. Intermediate coat: The intermediate coat shall be an epoxy-polyamide or epoxy amido-amine coating applied to a dry film thickness of 4 mils. Intermediate coats shall be Carboline D 890, Magna-Prime (Porter), Tnemec Series 66, or equal.

10 SECTION Finish coat: The finish coat shall be an aliphatic polyurethane coating applied to a dry film thickness of 2 to 3 mils. Finish coat shall be Carboline 134 or 133 HB, Hythane Super (Porter), Tnemec Series 73, or equal. 3.6 FILLING AND FLUSHING: A. Lines shall be filled slowly with potable water at a maximum velocity of 1 ft/s while venting all air. Precautions shall be taken to prevent entrapping air in the lines. After filling, lines shall be flushed at hydrants, blow-offs, and dead ends using a minimum velocity of 3 ft/s. A minimum of 3 changes of treated water shall be used in flushing operations. B. Valves shall be closed slowly to prevent excessive surge while maintaining positive pressure at all times throughout the new line. Flushing water shall be discharged without causing erosion damage, flooding of roadways or structures. 3.7 DISINFECTION OF WATER SYSTEMS: A. After filling and flushing and hydrostatic testing, the Contractor shall disinfect all water mains and appurtenances in accordance with these specifications and AWWA C B. The Contractor shall disinfect the pipeline using the tablet, continuous feed, or slug chlorination method outlined in AWWA C The disinfection procedure shall provide a chlorine solution with a free chlorine residual of at least 25 mg/l but no more than 100 mg/l into the pipeline in a manner that will result in a thorough wetting of all surfaces and the discharge of all trapped air. The solution shall remain in place for 24 hours. After the 24-hour period, the free chlorine residual shall be checked at each bacteriological sampling point specified below, and if it is found to be 10 mg/l or more, the chlorine solution shall be drained and the pipeline flushed with potable water until chlorine measurements show that the concentration in the water leaving the pipeline is no higher than that generally prevailing the distribution system or is acceptable for domestic use. If the check measurement taken after the 24-hour contact time indicates a free chlorine residual of less than 10 mg/l, the facilities shall be flushed, rechlorinated, and rechecked until a final residual of 10 mg/l is achieved. All chlorine residual measurements shall be conducted by the Contractor in the

11 SECTION presence of the Engineer. C. Heavily chlorinated water shall not remain in prolonged contact with the pipe and appurtenances. 3.8 TESTING: A. All water piping shall be tested for water tightness by subjecting each section to hydrostatic tests in accordance with the Uniform Plumbing Code. The test pressure for PVC shall not exceed 150 percent of the rated operating pressure of the lowest rated component in the system. Prior to testing the piping shall be backfilled or anchored to prevent movement during the testing. B. Bacteriological Testing. (Potable Treated Water Only) 1. After disinfection and final flushing, two consecutive sets of acceptable samples, taken at least 24 hours apart, shall be collected from the new main. The samples shall be delivered to a certified testing laboratory approved by the Engineer. The cost of laboratory testing shall be borne by the Contractor. At least one set of samples shall be collected from every 1,200 feet of new water main, and at least one set from each new main branch.. All samples shall be tested in accordance with Standard Methods for the Examination of Water and Wastewater. Satisfactory results shall show the absence of coliform organisms in all samples. 2. If the initial set of samples fail to produce satisfactory bacteriological results, the new main shall be reflushed and resampled. If the second set of samples also fail to produce satisfactory results, the main shall be redisinfected and sampled until satisfactory results are obtained. 3. The Contractor shall provide all sampling points in the main. Sampling point materials and location shall be approved by the Engineer. After acceptance of the satisfactory results, all temporary corporation stops shall be removed and the taps plugged with brass plugs. 3.9 VALVE BOXES AND VAULTS: A. All valve boxes and vaults shall be installed as to prevent the

12 SECTION MEASUREMENT AND PAYMENT. 4.1 MEASUREMENT: transmission of stress or loading to the valve and located so that the valve operator or valve is readily accessible. Valve box covers and vault covers shall be placed flush with paved surfaces and be raised 1 inch above the surface in non-traffic areas, unless otherwise specified. A. Measurement of water line shall be on a per lineal foot basis, for the size and type of water line installed to the nearest foot. B. Measurement of Valves, Fittings, and appurtenances shall be on a per each basis. 4.2 PAYMENT: END OF SECTION A. Payment for water line shall be on a per lineal foot basis, for the size and type of water line installed to the nearest foot as listed in the Proposal. All costs for water line shall include all testing, trenching, bedding & backfill, surface replacement, connections, coordination and all work necessary to furnish and install water pipe and place it in service shall be included in the price bid. B. Payment for valves, fittings and appurtenances shall be on a lump sum basis, for the size and type as listed in the Proposal. All costs for valves, fittings and appurtenances shall include all excavation, surface replacement, thrust blocks, attachments, coordination, testing and all work necessary to furnish and install the listed fitting and place it in service shall be included in the price bid.