(A) General. All domestic watermains installed within existing or proposed rights-of-way shall conform to all applicable American Waterworks Association (AWWA) Standards. Any associated requirements of the State Department of Environmental Management (IDEM) will be the responsibility of the developer. Acquisition of all necessary permits will also be the developer’s responsibility. No construction will be allowed until the developer has delivered copies of all permits to the town for review and approval.
(B) General design standards.
(1) Design of all domestic water systems to be owned and operated by the town will be in accordance with all applicable standards. The town, with its Engineer, will dictate the size of the mains as necessary to provide adequate fire protection and to allow for future growth.
(2) Water systems shall be designed and installed with fire hydrants at all intersections and at intervals no greater than 400 feet. Closer hydrant spacing may be required by the town, depending upon the nature of the development.
(3) Systems shall be designed and installed with adequate valves to isolate areas of the system for routine maintenance and repair. Isolation valves will be required at all intersections and at intervals no greater than 600 feet. The town reserves the right to require smaller valve intervals if it believes that the nature of the development necessitates such.
(4) All domestic watermains shall be design and installed at depths no less than five feet.
(C) Valves.
(1) Valves shall comply with AWWA C-509 and shall be cast iron body with mechanical joint ends. The valves shall be Resilient Wedge Valves F-6100 as manufactured by Clow Corporation, or an approved equal. The valves shall be designed and constructed to withstand a working pressure of 200 psi shall be hydrostatic tested, without leakage or distortion, under a water pressure of not less than 400 psi.
(2) Plug valves still be series 100 as manufactured by Dezurik, Homestead Ball centric or an approved equal. Eccentric plug valves shall be non-lubricated with resilient sealing plug surface, or epoxy coated surface having screwed, flanged or mechanical joint ends.
(3) Valve boxes shall be Clow F-2545 screw type two piece or F-2450 three piece cast iron with removable cast iron lid or approved equal. Valve boxes shall be provided for all valves located in the distribution system and in other locations where required or necessary for the operation of the valves.
(4) Valves shall be installed in accordance with detail in § 50.38, Detail 5B, included in these standards.
(D) Hydrants.
(a) All hydrants shall be six-inch, three-way Waterous Pacer. Hydrants shall conform to AWWA C-502. Threads shall be the National Standard Thread or similar to that existing in the system and shall open in a counterclockwise rotation.
(b) Hydrants shall be design so that the valve will remain closed if the upper portion is removed or broken off. The operating nut shall be pentagonal and shall turn counterclockwise to open. The hose caps shall be secured to the hydrant with a chain. All hydrants shall have drain valves and shall be properly painted before shipment and after installation. The contractor shall provide an operating wrench for every ten hydrants supplied. The hydrant branch main and watch valve shall be restrained against internal thrust with an approved restraint method.
(E) Materials.
(1) Ductile iron.
(a) Pipe: All pipe shall be within the following specifications unless approved otherwise by the town. Each length of pipe and fittings shall be plainly stamped or indelibly marked or color coded as to the weight, class and type thereof, and shall include the manufacturer’s trademark or name and the National Sanitation Seal of Approval. Prior to ordering pipe materials, approval of the manufacturer must be obtained from the town.
(b) Pipe: ductile iron pipe shall be centrifugal cast and shall conform to AWWA C-151 (ANSI A-21.51). Pipe shall be Pressure Class 250.
(c) Lining: the inside surfaces of all pipe and fittings shall be standard cement mortar lined and seal coated with an approved bituminous seal coat in accordance with AWWA C-104 (ANSI A- 21.4). Coat the exterior surfaces with an approved bituminous coating meeting the requirements of AWWA C 151 (ANSI-21.51).
(d) Fitting shall be cast iron or ductile iron and standardized for the type of pipe and joint specified. Fittings shall comply with AWWA C-110 (ANSI A21.10).
(e) Mechanical joints or push-on slip joints shall be provided. Mechanical joints and accessories shall conform to AWWA Standard C-111 (ANSI A-21.11). The bolts and nuts shall be corrosion resistant high strength alloy steel. The O-ring gaskets sealing the slip joint shall be made of rubber of special composition having a texture to assure a watertight and permanent seal and shall be the product of a manufacturer having at least five years’ experience in the manufacturer of rubber gaskets for pipe joints. The gaskets shall be a continuos ring of flexible joint rubber of a composition and texture which is resistant to common ingredients of sewage, industrial waste and groundwater, and which will endure permanently under the conditions likely to be imposed by this service. The gasket shall conform to the requirements of AWWA C-111 (ANSI A-2111).
(f) Where indicated on plans for submerged crossings of rivers, lakes or streams, pipe shall be furnished with boltless ball and socket type joints with a pipe pressure class of 350 psi.
(g) Where indicated on plans, restrained joints shall be provided. Restrained joints shall be designed in accordance with AWWA C-111 and shall permit horizontal and/or vertical deflection after assembly, yet adequately restrain the joint at the full design pressure. Restrained joints shall be Lok-Fast, Lok-Tyte or equal. Pipe connecting to restrained joint fittings shall also have restrained joints.
(2) Polyvinyl Chloride Pipe (PVC) SDR Rated.
(a) Polyvinyl chloride pipe SDR rated shall meet the requirements of ASTM D2241. The material used shall conform to ASTM D 1784, Class 12454-B. Pipe shall be SDR-21 (pressure Class 200) unless otherwise approved.
(b) Pipe joints shall be bell end or coupling push-on type. Joints shall meet the requirements of ASTM D 3139 using Flexible Elastomeric Seals. Solvent-cement joints are not permitted. The joint shall be a designed to provide for the Thermal expansion and the contractor experienced with a temperature change of 75°F in each joint of pipe. Details shall be in accordance with the manufacturer’s recommendations. The lubricant shall have no deteriorating effects on the gasket or the pipe. Gaskets shall meet the requirements of ANSI A21.11.
(c) Fittings shall be standard radius ductile iron meeting the requirements of AWWA C-110 (ANSI A-21.10). Design and manufacture fittings for a pressure rating of 200 psig.
(F) Service lines. Residential service lines shall be constructed using one inch or larger CTS polyethylene flexible pipe from the tap to the meter pit with Mueller 110 compression fittings or an approved equal. Larger service lines may be necessary for larger water consumers.
(G) Meter pits.
(1) The minimum diameter shall be 20 inches I.D. for single water settings. Lid shall be equipped with a standard waterworks locking Pentagon nut indicating water service. Pits shall be set at the property line with a bottom depth of 36 inches and the lid at finish grade to allow easy access for Utility personnel. No. 8 stone bedding or concrete brick shall be utilized below pits to minimize settling.
(2) Pre-manufactured dual meter pits are acceptable where two adjacent properties exist.
(3) Single, PSBH-244-18H-48-Q-NA 18” Dia x 48” Bury, Heavy-Wall Pit-str; Aug Ball Valve x Chk Valve for five-eights by three-fourths meters; PVC Brace Pipe; Blk Plastic Ties; C14-33-Q Cplgs Not Assembled (loose).
(4) Double, PDSBH-244-21H-48-Q-NA 21” Dia x 48” Bury, Heavy-Wall (SDR 51) Dual Pit-str; Ang Ball Valve x Chk Valve for 2 - five-eights by three-fourths meters; Parallel PVC Brace Pipes-Perpendicular to Meters; Blk Plastic Ties; C14-44-Q/C14-33-Q Cplgs Not Assembled.
(5) One-inch single, PSBH-444-21H-48-Q-NA 21-inch Dia x 48-inch Bury, Heavy-Wall (SDR 51) Pit-str; Ang Ball Valve x Chk Valve for one-inch meter; PVC Brace Pipe; Blk Plastic Ties; C14-44-Q Cplgs Not Assembled.
(6) Meters shall be Invensys five-eights inch by three-quarter inch SRTRPL
(H) Backflow preventor. A backflow prevention device is required do be installed where an auxiliary water supply is connected to the household plumbing, where any water line from an auxiliary water supply enters or passes within one foot of any part of the household, all irrigation systems, or any service connections designated to have a potential cross connection hazard. See detail in § 50.38, Detail 5(E). The backflow prevention device shall be a University of Southern California (USC) or other IDEM or town-approved device and shall be installed in a location approved by the town. The device must be periodically tested by a tester certified in the state at intervals determined by IDEM and paid for by the property owner.
(I) Special crossings. Steel Casing pipe shall be used where crossing State Highways, railroads, or where shown elsewhere on plans. The casing pipe shall be welded steel pipe, new and unused material in accordance with current ASTM Specifications A-139 Grade B for “Electric Fusion of Welded Steel Pipe” with a minimum yield of 35,000 psi. The diameter of the casing shall be 24 inches, unless otherwise noted with a wall thickness of 0.407. Installation shall be in compliance with the American Water Works Association Standard C600-93, Section 6.
(J) Installation.
(1) Pipe shall be laid in accordance with applicable requirements of ANSI/A WW A C600, these standards and the manufacturer’s recommendations. If any conflicts exist, the most stringent shall apply.
(2) The contractor shall provide proper implements, tools and facilities for the safe and expeditious performance of the work.
(3) Every pipe, fitting and valve shall be cleaned of all debris, dirt and other foreign material before being laid and shall be kept clean until accepted in the completed work.
(4) The contractor shall lay and maintain pipe to the lines and grades shown on the approved plans unless otherwise allowed by the town, install fittings, valves and hydrants in the locations shown on the approved drawings.
(5) Where the piping is to be constructed parallel to and close to existing buried utilities, the exact location of which is unknown, adjust the alignment of the piping to least interfere with these utilities.
(6) Piping shall not be laid in water or when the trench or weather conditions are unsuitable for proper installation.
(7) Pipe, fittings and valves shall be lowered into the trench by hand, by means of hoists or ropes, or by other suitable tools or equipment which will not damage materials, coatings or linings. Do not drop or dump pipe, fittings or valves into the trench. Pipe laying shall begin at the lower end. As each length of pipe is placed in the trench, the joint shall be assembled and the pipe brought to correct line and grade. Bell holes shall be excavated in advance of pipe laying so the entire barrel will bear uniformly.
(a) Minimum separation. Potable water piping shall be laid at least ten feet horizontally from any existing sanitary sewer or sewage force main. The distance shall be measured form edge of pipe to edge of pipe. Potable water piping crossing sanitary sewers or sewage force mains shall be laid to provide a minimum vertical distance of 18 inches between the outside of the potable water piping and the outside of the sewer force main. The 18-inch separation shall apply whether the potable water piping is over or under the sewer or force main. Lay potable water piping at crossings of sewers and force mains so a full length of pipe is centered on the sewer pass through or come in contact with any part of a sanitary sewer manhole.
(b) Depth of cover. Piping shall be installed so that not less than five feet zero inches of cover is provided over pipe, unless approved otherwise in writing by the town. Cover shall be measured as the vertical distance from the top of the pipe to the finish grade elevation.
(c) Thrust restraint. Thrust restraint shall be provided at horizontal and vertical deflection fittings and at tees, caps, reducers, bends, plugs, tapping sleeves and tapping saddles. General thrust blocking details are given in the detail in § 50.38, Detail D.
(d) Open excavation. Open excavation shall be satisfactorily protected at all times. At the end of each day’s work, the open ends of all pipes shall be protected against the entrance of animals, children, earth or debris by bulkheads or stoppers. The bulkheads or stoppers shall be perforated to allow passage of water into the installed pipe line to prevent flotation of the pipe line. Any earth or other material that may find entrance into the watermain through any such open end must be removed at the contractor’s expense.
(e) Magnetic locator wire. A #12 magnetic locator wire shall be installed with all PVC or non-metallic utilities and service lines. Wire will be installed with the pipe and made electrically sound and water tight.
(f) Sample point. The developer will be required to provide sample points to be installed within the system of the new development in locations and as approved by the town. Sampling stations shall be Eclipse No. 88 as manufactured by Kupferle Foundry.
(K) Pipe bedding, haunching, and backfill.
(1) Each pipe section shall be laid in a firm foundation of bedding material and haunched and backfilled with care. Bedding material shall be carefully brought to grade along the entire length of pipe to be installed. Uniformly compacted clean sand bedding shall be installed below all watermains. Use hand or mechanical tamping to compact the bedding material to a minimum 95% Standard Proctor Density.
(2) Slightly damp material will generally result in a maximum compaction with a minimum of effort. If water is added to improve compaction or if water exists in the trench, take care to avoid saturation of bedding material, which could result in the loss of stability. Check grade of bedding after compaction to assure conformity with plans.
(3) In yielding subsoils, the trench bottom shall be undercut to the depth necessary and backfilled with graded, crushed stone to form a firm foundation.
(4) Where excavation occurs in rock or hard shale, the trench bottom shall be undercut and a minimum of six inches crushed stone bedding placed prior to typical bedding installation.
(5) Embodiment material, or haunching, shall be placed around flexible pipe. Crushed stone, pea gravel, graded gravel or sand used as backfill between the bedding material and up to 12 inches over the top of the pipe, shall be hand placed. If fine sand, silt, or clayey gravels are used for initial backfilling over the pipe, it shall be hand placed in six- to eight-inch layers and hand compacted on both sides of the pipe to an elevation 12 inches over the top of the pipe.
(6) Trench widths and bedding requirements shall, conform to manufacturer’s reco- mmendations, AWWA/ASTM Standards and these standards. Where conflicts exist, the most stringent shall apply.
(7) Unless otherwise shown on plans, rigid pipe, such as concrete or ductile iron, shall be backfilled between the bedding material and a plane 12 inches over the top of the pipe with hand placed finely divided earth, free from debris and stones.
(8) Granular backfill shall be used in accordance with INDOT Standard Specifications. contractor shall place all granular fill in a manner as to achieve not less than 95% of the maximum dry density as determined in accordance with AASHTO T99, Method A (Std. Proctor) for the entire depth of the excavation.
(a) The manner in which the contractor achieves proper compaction shall be demonstrated at the beginning of the project (first 1,000 cubic yards) and this method shall be used for the duration of the project.
(b) The contractor shall use an independent testing agency to verify proper compaction.
(9) Backfill and bedding shall be in accordance with the detail in § 50.38, Detail 5A, unless approved in writing by the town.
(L) Pipe assembly.
(1) Joints shall be assembled in accordance with, the manufacturer’s instructions. The manufacturer’s lubricant shall be properly applied where applicable. Spigot ends shall be centered in the bell and the pipe pushed home and brought to the correct line and grade. Pipe and fittings which do not allow a sufficient and uniform space for joints shall be removed and replaced with pipe or proper dimensions. Precautions shall be taken to prevent dirt or other materials from entering the joint space.
(2) When it is necessary to deflect pipe from a straight line in either the horizontal or vertical plane, the amount of joint deflection shall not exceed 80% of the allowance recommended by the manufacturer. If alignment results in excess joint deflection, install additional fittings or shorter lengths of pipe.
(3) Cutting pipe for insertion of valves, fittings or closure pieces shall be done in conformance with recommendations of the manufacturer of the pipe and cutting equipment. Cutting shall be done in a safe, workman like manner without creating damage to the pipe lining. An oxyacetylene torch shall not be used. Ends and rough edges shall be ground smooth. The cut ends of push-on joint connections shall be beveled by methods recommended by the manufacturer.
(M) Service line installation. All service lines within the public right-of-way shall be installed in accordance with these standards. Portions of service lines installed on private property shall be installed in accordance with the latest addition of the One- and Two-Family Dwelling Code and the Uniform Plumbing Code and shall utilize polyethylene pipe designed for 200 psi.
(N) Hydrant installation.
(1) Placement.
(a) Hydrants shall be installed in locations as shown on plan and in such a manner to provide complete accessibility. Placement shall reduce the possibility of damage from vehicles or injury to pedestrians.
(b) When placed behind the curb, the hydrant barrel shall be set so that no portion of the hose nozzle cap will be less than two feet nor more than six feet from the gutter face of the curb. When set in lawn space between the curb and the sidewalk, or between the sidewalk and property line, no portion of the hydrant or nozzle shall be within six inches of the sidewalks.
(2) Installation.
(a) Hydrants shall stand plumb and shall be situated so that side nozzles face the curb at a 90-degree angle. If located on private property or a rural road, the nozzle shall point to the nearest roadway. Each hydrant shall be connected to the main with not less than a six inches nominal, diameter branch unless otherwise shown on plans.
(b) If hydrant is placed on pervious soil drainage shall be provided by placing coarse gravel or crushed stone mixed with coarse sand from the bottom of the trench to a minimum of six inches above the waste opening in the hydrant elbow.
(c) Hydrants shall be tied to the pipe with suitable steel tie rods, clamps, or restrained joints. Hydrants shall be painted in accordance with AWWA C-502.
(3) Restraint. Hydrants and valves shall be installed with a manufactured thrust restraint system, or stainless steel all threads, to stabilize valve and hydrant under all operating conditions including removal and replacement activities.
(O) Testing and disinfection taps. All domestic watermains shall be flushed, tested and disinfected.
(P) Wet taps.
(1) Wet taps will be reviewed and approved by the town on a case by case basis.
(2) The contractor shall obtain all necessary permits from associated governing agencies prior to beginning work.
(3) An inspector from the utility must be present during the tap.
(4) Appointments must be scheduled 48 hours in advance of construction. contractor shall submit a site plan showing, at a minimum the entrance to the structure, lateral location, sump discharge line, meter pit and location of proposed service line prior to issuance of a permit. Excavation trench must comply with all OSHA requirements.
(5) A minimum of 36 inches shall be provided between the watermain and trench wall during installation.
(6) The bottom of the trench must be a minimum of 12 inches below the bottom of the main and six inches behind the main.
(7) Stone, sand or pea gravel shall be placed in unstable or wet trench bottoms.
(8) The contractor shall use appropriate methods to keep the trench bottom dry and free from water.
(9) No fittings or bells shall be installed within three pipe diameters of pipe. No taps shall be made within seven feet of a hydrant. Excavations must be backfilled with sand or pea gravel to 12 inches above the main.
(Ord. passed - -)