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HomeMy WebLinkAboutWQ0044535_Pump Stations and Force Main Specifications_20230703JUN 2 8 2023 NCDEQIDWRINPDES CARBON CYCLE NORTH CAROLINA LLC PUMP STATIONS AND FORCE MAIN SPECIFICATIONS Prepared By F. Tyndall Lewis, P.E. McDavid Associates, Inc. 109 E. Walnut Street Goldsboro, NC 27530 (919) 736-7630 Corporate License No. C-131 June 21, 2023 02226 Pagel SECTION 02226 -- - EXCAVATION, BACKFILL & COMPACTION FOR FORCE MAINS PART GENERAL 101. WORK INCLUDED A. Excavate trenches. B. Undercut excavation as required to obtain subgrade structural stability. C. BORROW and/or SELECT BACKFILLas required- D. Backfill trenches. E. Compact backfill. F. Remove and dispose of excess and/or unsuitable excavated materials. G. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS. H. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK 102. RELATED WORK A. Erosion and sedimentation control. 103. REFERENCES k ASTM D698 - Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Standard Effort (12,400 ft-lbf/fO (600 kN-m&D B. ASTM D1557 - Standard Test Methods for Laboratory Compaction Characteristics of Soil Using Modified Effort (56,000 ft-100 (2,700 kN-M&D C. ASTM D2487 - Standard Method for Classification of Soils for Engineering Purposes. D. NCDOT - Standard Specifications for Roads and Structures 104. METHOD OF PAYMENT A. Payment for EXCAVATION, BACKFILL AND COMPACTION FOR FORCE MAINS shall be included within the respective price of the pipe. No additional payment shall be made for EXCAVATION, BACKFILL AND COMPACTION FOR FORCE MAINS. 02226 Page 2 B. When UNDERCUT EXCAVATION is required due to subgrade structural instability, payment for UNDERCUT EXCAVATION shall be included within the respective price of the pipe. No additional payment shall be made for UNDERCUT EXCAVATION- C. When BORROW and/or SELECT BACKFILL are required, payment for BORROW and SELECT BACKFILL shall be included within the respective price of the pipe. No additional payment shall be made for BORROW or SELECT BACKFILL. D. The above payment shall be full compensation for all work covered by this section including, but not limited to: excavation-, blasting, hauling anywhere along the project path both within and across balance points; removal of unsuitable material; removal of sidewallo, driveways, curbs, gut{m, endwalls, and drainage structures; formation and compaction of embankments, subgrades, and shoulders; breaking up pavement undemeath embankment; disconnecting, plugging, and removing private utility lines; removing underground tanks and any required backfill; backfill; borrow; select backfill; compaction; disposal of surplus and unsuitable materials; and maintaining the work as required for a complete installation unless specifically addressed and identified under another pay item. PAR PRODUCTS 201. DEFINITIONS A Site — a parcel of land occupied or to be occupied by a building or structure. B. Pipe Embedment Zone — extends from the undisturbed trench bottom to six (6) inches above the top of the pipe and includes the bedding, hauncbiag, and initial backfill zones. C. Bedding Zone — extends from the undisturbed trench bottom to the bottom of the pipe. D. Haunching Zone — extends from the top of the bedding zone to the horizontal centerline of the pipe. E. Initial Backfill Zone — extends from the horizontal centerline of the pipe to six (6) inches above the top of the pipe. F. Final Back011 Zone — extends from six (6) inches above the top of the pipe to the final grade surface or subgrade surface where under proposed pavements. 202. PIPE EMBEDMENT ZONE MATERIALS A. Bedding, haunching, and initial backfill materials shall be as shown on the PLANS and as specified in Section 02663 of these SPECIFICATIONS. 203. FINAL BACKFILL ZONE MATERIALS A. Zone A - Under roadway, driveway, and parking area pavements 1. Native soil, borrow, or select backfill material consisting of soil classified as Type GW, GP, SW, Sp, GM, GC, SM, or SC in accordance with ASTM D2487. Borrow and/or select backfill shall be used if native soil cannot be compacted to the required density. 2. No. 67 or No. 78M stone in compliance with the NCDOT Standard Specifications for Roads and Structures. 02226 Page 3 B. Zone B - Between the edge of pavement and bottom of side ditch (or 10 feet from edge of pavement when there is no side ditch) below the theoretical 1:1 slope from the edge of pavement to the bottom of the nearest excavation wall 1. Native soil, borrow, or select backfill material consisting of soil classified as Type GW, GP, SW, Sp, GM, GC, SM, or SC in accordance with ASTM D2487. 2. No. 67 or No. 78M stone in compliance with the NCDOT Standard Specifications for Roads and Structures. C. Zone C - Between the edge of pavement and bottom of side ditch (or 10 feet from edge of pavement when there is no side ditch) above the theoretical 1:1 slope from the edge of pavement to the bottom of the nearest excavation wall 1. Native soil free of lumps, clods, stones, rocks, boulders, highly plastic clay, frozen lumps, or other objectionable material. Provide and add suitable soil materials as required to meet compaction requirements. Suitable soil materials shall be soil classified as Type GW, GP, SW, Sp, GM, GC, SM, or SC in accordance with ASTM D2487. 2. Borrow or select backfill material consisting of soil classified as Type GW, GP, SW, SP, GM, GC, SM, or SC in accordance with ASTM D2487. D. Zone D - Beyond the Centerline of side ditch (or 10 feet from edge of pavement when there is no side ditch) 1. Native soil free of lumps, clods, stones, rocks, boulders, highly plastic clay, frozen lumps, or other objectionable material. Provide and add suitable soil materials as required to meet compaction requirements. Suitable soil materials shall be soil classified as Type GW, GP, SW, Sp, GM, GC, SM, or SC in accordance with ASTM D2487. PART 3 EXECUTION 301. COORDINATION A- Contact all utility companies and coordinate the proposed force main installation with all existing utilities prior to beginning construction. B. The CONTRACTOR shall be fully responsible for all damages and costs to repair or replace any existing utility, whether underground or overhead, damaged as a result of the proposed force main installation. C. Notify the OWNER and ENGINEER of the proposed construction beginning date at least seven (7) days prior to being construction. D. Upon discovery of an unkn wn utility or concealed subsurface condition, discontinue the affected work and notify the ENGINEER 302. PROTECTION A. Comply with all safety regulations and safeguards for the safety and protection of all persons within the construction area. Erect and maintain all work in a safe and stable condition. B. Protect excavations by shoring, bracing, sheet piling, underpinning, or other methods required to prevent cave-in or loose soil from falling into excavation. 02226 Page 4 C. Protect existing landscaping, trees, structures, fences, pavements, curbs, gutters, bench marks, utilities, and other features which are to remain. D. Grade excavation top perimeter to prevent surface water run-off into excavation. E. Repair all. damages. Restore all disturbed areas and features to conditions as good as or better than originally existed. 303. PREPARATION A. Establish and verify required lines, levels, grades, and datum. B. Identify and flag known utilities- C. Investigate subsurface conditions at the construction site. Identify soils, soil conditions, and potential utility conflicts. D. Notify and coordinate with utility owner to have conflicting utilities removed and/or relocated. 304. EXCAVATION A. Excavate soil and all subsurface materials encountered sufficient to permit 36" minimum cover in all directions or greater if required on the PLANS. B. Trench width shall be sufficient to permit the pipe to be properly laid, joined, and inspected and to permit proper placement and compaction of bacUll under and around the pipe. Trench width at the top of the pipe shall not exceed the outside diameter plus two feet. C. Backfill excess excavation below required subgrade with earth, sand, or gravel as directed by the ENGINEER at no additional cost to the OWNER. D. Compact backfill of excess or unauthorized excavation to 98% Standard Proctor under all traffic ways and 95% Standard Proctor under all non -traffic ways at no additional cost to the OWNER E. Hand trim excavation for bells. F. Remove lumped subsoil, boulders, rocks or other material creating a smooth uniform foundation. G. Do not open more than 300 feet of trench in advance of the completed work in any section. H. Do not allow trenches to remain open overnight. I. Place excavated material on one side of the trench in such a manner as not to obstruct any drain or gutter unnecessarily or obstruct any passageway. 305. PIPE EMBEDMENT ZONE A. Place and compact bedding, haunching, and initial baclffill as shown on the PLANS and as specified in Section 02663 of these SPECIFICATIONS. 306. PIPE INSTALLATION A. Install pipe in accordance with the respective section of these SPECIFICATIONS for the type of pipe being installed. 02226 Page 5 B. Prior to installing pipe, verify that the bedding and trench are free of debris, extraneous material, obstructions, snow, ice, and water and that the bedding and trench surfaces are not frozen- C. Backfill and compact over excavated areas under pipe bearing surfaces. D. After the pipe has been placed, verify that the pipe line has been correctly installed in accordance with the required line and grade shown on the PLANS or directed by the ENGINEER. 307. BLOCKING A. Block pipe in accordance with SECTION 02667 `BLOCKING OF FORCE MAINS." 308. FINALBACKFILL A. Place and compact final backlill as shown on the PLANS and as specified herein. B. Prior to placing final backK verify that the pipe line has been correctly installed to the required line and grade. C. Verify that areas to be filled are free of debris, extraneous material, obstructions, snow, ice, and water and that trench surfaces are not frozen. Do not backfill over porous, wet, spongy, or frozen surfaces. D. Use a placement method so as not to disturb or damage the pipe line. E. Support pipe during placement and compaction of backfill materials to maintain correct tine and grade. F. Do not drop backfill materials from the ground surface over the pipe. G. Carefully place haunching and initial backfill materials by hand. Uniformly place and compact materials on both sides of the pipe so as to avoid injury to the pipe and prevent unequal pressures on the pipe. H. Place and compact backfill materials in continuous layers not greater than six (6) inches loose depth. L Uniformly place and compact backfill materials within three (3) feet of a structure on all sides of the structure so as to avoid injury to the structure and prevent unequal pressures on the structure. J. Compact backfill materials with hand tools, tampers, light rollers, vibrators, or similar compaction equipment Do not use heavy equipment in the trench. K. Moisten and/or dry backfill materials as necessary to adjust moisture content to within two (2) percent of optimum moisture content and achieve the required density and structural stability. L. Place final backfill to subgrade or final grade contours and elevations. 309. FINAL BACKFILL COMPACTION REQUIREMENTS NOT WITHIN PUBLIC RIGHTS -OF -WAY A. All Traffic Ways — 98% Standard Proctor Density (ASTM D698) B. Non -Traffic Ways — 95% Standard Proctor Density (ASTM D69 8) 02226 Page 6 310. FINAL BACKFILL COMPACTION REQUIREMENTS WITHIN PUBLIC RIGHTS -OF -WAY A. Zone A - Under roadway pavements 1. From the top of initial backfill to eight (8) inches below the finished subgrade — 98% Standard Proctor Density (ASTM D698) 2. From eight (8) inches below the finished subgrade to the finished subgrade — 100% Standard Proctor Density (ASTM D698) B. Zone A -Under driveway and parking areas (paved and unpaved) 1. From the top of initial backfill to the finished subgrade — 98% Standard Proctor Density (ASTM D698) C. Zone B - Between the edge of pavement and bottom of side ditch (or 10 feet from edge of pavement when there is no side ditch) below the theoretical 1:1 slope from the edge of pavement to the bottom of the nearest excavation wall 1. From the top of initial backfill to the finished grade — 98% Standard Proctor Density (ASTM D698) D. Zone C - Between the edge of pavement and bottom of side ditch (or 10 feet from edge of pavement when there is no side ditch) above the theoretical 1:1 slope from the edge of pavement to the bottom of the nearest excavation wall 1. All Traffic Ways — 98% Standard Proctor Density (ASTM D698) 2. Non -Traffic Ways — 95% Standard Proctor Density (ASTM D69 8) E. Zone D -Between the centerline of side ditch (or 10 feet from edge of pavement when there's no side ditch) 1. All Traffic Ways — 98% Standard Proctor Density (ASTM D698) 2. Non -Traffic Ways — 95% Standard Proctor Density (ASTM D698) 311. COMPACTION REQUIREMENTS ADJACENT TO BUILDINGS, STRUCTURES, AND UTILITIES A. 98% Standard Proctor Density (ASTM D698) 312. DISPOSAL OF EXCESS AND/OR UNSUITABLE MATERIALS A Dispose of excess and/or unsuitable excavated materials not required for fill or backfill at an approved off -site disposal site provided by the CONTRACTOR. 313. FIELD QUALITY CONTROL A- Cooperate in sampling and testing activities including interrupting work operations when necessary. B. Provide personnel, tools, equipment, etc. to assist in sampling and testing activities. C. Excavate test holes to accommodate testing as directed by the ENGINEER 02226 Page 7 D. After testing is complete, bacldill and compact test hole. END OF SECTION 02344 Pagel SECTION 02344 CASED DRYBORES WITH PIPE SUPPORTS PART GENERAL 101. WORKINCLUDED A. Provide and install drybores, carver pipe and all appurtenances as shown in the PLANS or discussed in the CONTRACT DOCUMENTS. B. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS. C. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK. D. The cased drybore crossing the CSX right-of-way ate the intersection of Plank Street and North Railroad Street shall be performed in accordance with all CSX requirements. 102. METHOD OF MEASUREMENT A. The quantity of drybore to be paid for will be the approved number of linear feet of casing to include carrier pipe as measured by the ENGINEER. Drybore quantities for which payment shall be made will be based upon termination of the casing three feet beyond the edge of the asphalt regardless of the quantity shown on the PLANS or the actual quantity installed except when said installation is at the specific written instruction of the ENGINEER Excess casing installed at the convenience of the CONTRACTOR sha11 be at the sole expense of the CONTRACTOR 1. CONTRACTOR shall famish one man to assist ENGINEER and to verify measurements. 103. METHOD OF PAYMENT A. Payment for DRYBORES shall be on either a LUMP SUM basis or a UNIT PRICE basis in accordance with the pay UNITS shown within the BID SCHEDULE. B. The above prices and payments as specified in the BID SCHEDULE shall be full compensation for all work covered by this section including, but not limited to, the drybore, the casing, pipe supports, and the carrier pipe. PART2 PRODUCTS 201. CASING A. Only new casing will be used. 202. 02344 Page 2 B. The casing pipe shall conform to the materials standards of ASTM Designation A252, Grade 2 or approved equal. The diameter of the casing shall be as designated on the PLANS with the following corresponding thickness: Pipe Sizes (O.D.) Wall Thickness 11i wa Railroads 4" - 123/4" 0.188" 0.250" 14" 0.250" 0.281" 16" 0.250" 0.281" 18" 0.250" 0.312" 2011 0.250" 0.344" 2411 0.250" 0.406" 3011 0.312" 0.469" 36" 0.375" 0.531" C. The casing pipe shall be smooth wall steel casing of size and length specified, installed by the "dry" boring method, and in conformity with lines and grades shown on the PLANS and as necessary to fit the installation conditions. PIPE SUPPORTS A. Pipe supports shall be used to position the carrier pipe in the center of the casing pipe and to restrain the movement of the carrier pipe in all directions perpendicular to the pipe. B. Pipe supports shall be made of steel and be equal in design to SPIDER (brand) pipe supports by Spider Manufacturing Company of Durham, NC. 1. Each support shall clamp around the pipe and have a minimum of four (4) support legs. 2. Each support leg shall be equipped with skid feet which have front and back surfaces angled inwardly toward the collar allowing the carrier pipe to slide through the casing pipe. C. Pipe supports shall be coated with rust resistant primer and paint. D. Rubber liners shall be used inside the collars of the pipe supports when the carrier pipe is non-metallic. PART 3 EXECUTION 301 PREPARATION A. Install in locations as shown in PLANS. B. Protect existing landscaping, conditions and features. 302. INSTALLATION A. The hole shall be mechanically bored and cased through the soil by a cutting head on a continuous auger mounted inside the casing pipe. The installation of the casing and boring of the hole shall be done simultaneously. Lengths of pipe are to be adequately welded to the preceding section installed. Excavation material will be placed at the top of the working pit. 02344 Page 3 B. If voids are encountered or occur outside the encasement pipe, grout holes shall be installed in the top section of the encasement pipe at 10 foot centers and the voids filled with 1:3 Portland Cement grout at sufficient pressure to prevent settlement in the roadway. C. In the event an obstruction is encountered during the boring and jacking operation, the anger is to be withdrawn and the excess pipe is to be cut off; capped, and filled with 13 Portland Cement grout at sufficient pressure to fill all voids before moving to another boring site. D. Drybores shall extend a minimum of three (3) feet beyond the edge of the asphalt. E. Install spider -type supports on carrier pipes four (4) inches diameter or greater. 1. Install a minimum of three (3) supports per 20 foot pipe section - one at the bell end and two (2) spaced evenly in the middle. 2. For other pipe lengths, do not exceed seven () feet on -center between supports. F. Install carrier Pipe- G. Close up ends of casing with brick and mortar. END OF SECTION 02578 Pagel SECTION 02579 —__ BREAK, REMOVE, AND REPLACE EXISTING PAVEMENTS, CURBS, AND GUTTERS PART 1 GENERAL 101. WORK INCLUDED A Cutting, breaking, removal, disposal and replacement of existing pavements, curbs, and gutters. B. Excavation- C. Backfill and compaction- D. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS. E. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK. 102. REFERENCES A North Carolina Department of Transportation "Standard Specifications for Roads and Structure", latest edition, hereinafter referred to as NCDOT SSRS. 103. PROTECTION AND LIMITS OF REMOVAL A, Existing pavements, curbs, and gutters that are to remain shall be protected from damage due to construction operations. Restore all damaged areas to original condition or better. B. Pavements, curbs, and gutters shall not be removed except where required to permit the installation of the WORK.. C. Pipe line trench width at the ground removashall l and replacementlimtsd in accordance with Section 02222, Paragraph 102.C. so as to 104. METHOD OF PAYMENT A. Payment for BREAK, REMOVE, AND REPLACE EXISTING PAVEMENTS, CURBS, AND GUTTERS shall be included within the respective price for the WORK as shown in the BID SCHEDULE. No additional payment shall be made for BREAK, REMOVE, AND REPLACE EXISTING PAVEMENTS, CURBS, AND GUTTERS- B. The above payment shall be full compensation for all work covered by this section, including but not limited to: the satisfactory breaking up, removal, disposal, and replacement of existing pavements, curbs, and gutters. 02579 Page 2 PART 2 PRODUCTS - . 201. . GENERAL k Materials shall conform to the requirements of the NCDOT SSRS. 202. ASPHALT MDMS A. Asphalt mixes for surface course for low volume traffic sball be Type SF-9.5A asphalt concrete surface course conforming to Section 610 of NCDOT SSRS. B. Asphalt mixes for surface course for medium volume traffic shall be Type S-9.5B asphalt concrete surface course conforming to Section 610 of NC DOT SSRS. C. Asphalt mixes for surface course for NC and US primary routes shall be S-9.5C asphalt concrete surface course conforming to Section 610 of NCDOT SSRS. alt concrete base course shall be Type B-25.OB conforming to Section D. Asphalt mixes for asph 610 of NCDOT SSRS. 203. ASPHALT TACK A Asphalt tack shall conform to Section 605 of NCDOT SSRS. 204. CONCRETE A. Concrete shall be Class B concrete conforming to Section 1000 of NCDOT SSRS. B. Ching agents shall be liquid membrane compounds conforming to Section 1026-2 of NCDOT SSRS. C. Expansion joint filler shall conform to Section 1028-1 ofNCDOT SSRS. 205. AGGREGATE BASE COURSE A. Aggregate base course shall conform to Section 1010 of NCDOT SSRS. PART 3 EXECUTION 301. GENERAL A. Execute cutting, breaking, removal, disposal, excavation, installation of work, backfill, compaction, and replacement. B. Pavements, curbs, and gutters are not to be disturbed unless absolutely necessary for the installation of the WORK, and then only to the smallest extent necessary. C. Pavement shall be removed for the entire depth. D. All breaking and removal shall be performed in a neat and workmanlike manner' E. All pavements, curbs, and gutters shall be replaced with the same materials as that removed and to the original dimensions except as specified herein. 02578 Page 3 302. INSPECTION A. Inspect existing conditions, including elements subject to damage or movement during performance of work. B. After uncovering, inspect conditions affecting performance of work 303. PREPARATION Aprovide supports to assure structural integrity of surroundings; devices and methods to protect other portions of PROJECT from damage. B. Provide protection from elements for areas which may be exposed by uncovering work; maintain excavations free of water. 304. BREAK, REMOVAL AND DISPOSAL A. Provide a neat edge along the pavement being retained B. Saw Portland cement concrete pavements a minimum of two (2") inches deep prior to breaking the pavement to be removed. the depth of the C. shall be acceptable forscuttingetely asphalt pavements around valve boxes and manholes. hammers D. Curbs and gutters shall be sawed or removed to existing construction joints to provide a neat end as directed by the ENGINEER- E. CONTRACTOR shall dispose of all removed materials at a site provided by the CONTRACTOR in accordance with all applicable federal, state, and local laws, ordinances, rules, and regulations. 305. REPLACEMENT OF ASPHALT PAVEMENTS A Complete installation of the work, backK and compact. B. provide, place and compact aggregate base course a minimum of eight (8") inches thick under all pavements to be replaced. Compact aggregate base course to one hundred (100%) percent density based upon Modified Proctor test. C. The replacement surface course shall be a minimum of two (2") inches thick or the original thickness, whichever is greater. D. Tack edges of existing pavements with tack coat prior to placement of asphalt mix. E. provide, place and compact surface course of Type SF-9.5A, Type S-9.5B, or Type S-9.5C asphalt mix in accordance with Section 610 of NCDOT SSRS and such that the replaced pavement conforms with the shape of adjacent pavements forming a smooth transition free from high or low spots, ridges, valleys, ragged edges, or other defects. 02578 Page 4 F. Tack coat. 1. Weather Limitations. a Apply tack coat only when the surface to be treated is sufficiently dry and when the atmospheric temperature is 350F or above in the shade away from artificial heat b. Tack coat shall not be applied when the weather is foggy or rainy or there exists a threat of rain, when the base course is frozen, or when the moisture on the surface to be paved would prevent proper bond. 2. Application. a. CONTRACTOR shall clean surfaces prior to applying tack- b. The temperature of the tack coat material at the time of application shall be within the following ranges: Asphalt Material Temperature Range Asphalt Binder, Grade PG 64-22 3750F to 425"F Emulsified Asphalt, Grade RS-1H 90OF to 150OF Emulsified Asphalt, Grade CRS-lH 90OF to 150OF Emulsified Asphalt, Grade CRS-1 90OF to 150OF Emulsified Asphalt, Grade HFMS-1 90T to 160°F Emulsified Asphalt, Grade CRS-2 125OF to 1850F c. CONTRACTOR shall tack existing vertical edges of pavements, curbs, gutters, manholes, valve box protector rings which, will be in contact with replacement pavement CONTRACTOR shall tack surface of asphalt concrete base course. d. Uniformly apply tack to horizontal surfaces at a rate of 0.04 to 0.08 gallons per square yard. Too much tack coat between two pavement courses may serve as a lubricant rather than an adhesive. e. After the tack coat has been applied, CONTRACTOR shall protect it until it has cured for a sufficient length of time to prevent it from being picked up by traffic. G. Surface Course. 1 The replacement surface course shall be a minimaim of two (2") inches thick or the original thickness, whichever is greater. 2. CONTRACTOR shall not apply asphalt concrete over tack coat until the tack coat sufficiently cures. 3. Provide, place and compact surface course of Type SF-9.5A, Type S-9.5B, or Type S-9.5C asphalt mix in accordance with Section 610 ofNCDOT SSRS and such that the replaced pavement conforms with the shape of adjacent pavements forming a smooth transition free from high or low spots, ridges, valleys, ragged edges, or other defects. 306. REPLACEMENT OF CONCRETE PAVEMENTS A. Complete installation of the work, backfill, and compact 02578 Page 5 B. Provide, place and compact aggregate base course a minimum of six (6") inches thick under all pavements to be replaced. Compact aggregate base course to one hundred (100%) percent density based upon Modified Proctor test. C Replace pavement to the original dimensions except that the thickness shall not be less than six (611) inches thick for vehicular traffic ways and four (4") inches thick elsewhere. D. Provide expansion joints adjacent to existing pavements, curbs, gutters, and other rigid structures. E. Provide expansion joints to match expansion joints in existing adjacent Pavement- F. Provide and place concrete in accordance with Sections 825 and 848 of NCDOT SSRS and such that the replaced pavement conforms with the shape of adjacent pavements forming a smooth transition free from high or low spots, ridges, valleys, ragged edges, or other defects. G. Provide grooved construction joints to match existing adjacent pavements or as existed in original pavement. 307. RE PLACEMEN'T OF CONCRETE CURBS AND GUTTERS A. Complete installation of the work, backfill, and compact. B Provide, place, and compact aggregate base course a minimum of six (6") inches thick under all curbs and gutters to be replaced. Compact aggregate base course to one hundred (1001/1o) percent density based upon Modified Proctor test. C. Replace curbs and gutters to the original dimensions or to revised dimensions approved by the ENGINEER D. Provide expansion joints adjacent to existing pavements, curbs, gutters, and other rigid structures. E. Provide expansion joints to match expansion joints in existing curbs and gutters- F. Provide and place concrete in accordance with Section 825 and 846 ofNCDOT SSRS. G. Provide template formed contraction joints at ten (10') feet intervals. 308. REPLACEMENT OF ASPHALT CURBS A_ Complete installation of the work, backfill, and compact. B. Provide, place, and compact aggregate base course a minimum of six (61') inches thick under all curbs to be replaced. Compact aggregate base course to one hundred (100%) percent density based upon Modified Proctor test. C. Replace all underlying pavements as originally existing. D. Replace curbs to the original dimensions or to revised dimensions approved by the ENGINEER - END OF SECTION 02613 Pagel PART GENERAL 101 102. 103. 104. SECTION 02613 POLYVINYL CHLORIDE PIPE FOR FORCE MAINS WORK INCLUDED A. Provide and install all PVC pipe as shown in the PLANS or discussed in the CONTRACT DOCUMENTS. B. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all tal lete tion as shown on the PLANSed work and/or called for necessary in the SPECIFICATIONSto in complete accord with the CONTRACT DOCUMENTS. C. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK. REFERENCES A. ASTM D2241 - Standard Specification for Poly (Vinyl Chloride) (PVC) Pressure - Rated Pipe (SDR Series). B. ASTM D1784 - Standard Specification for Rigid Poly(Vinyl Chloride) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds- C. ASTM D2774 - Standard Recommended Practice for Underground Installation of Thermoplastic pressure Piping. SUBMITTALS A.. Provide shop drawings and/or manufacturer's literature fully describing the selected product. B. Provide copies of manufacturer's recommended handling, storage, and installation instructions. DELIVERY, STORAGE & HANDLING A. In accordance with the manufacturet's instructions, install pipe as soon as possible after delivery. and contamination. Protect all pipe during delivery and storage from sunlight, weather, damage e contaminated with Pipe damaged in any fashion shall be replaced by the CONTRACTOR Pip petroleum products such as diesel fuel exhaust shall be replaced by the CONTRACTOR 105. METHOD OF PAYMENT A_ Payment for POLYVINYL CHLORIDE PIPE FOR FORCE MAINS shall be included within the UNIT PRICE per linear foot as shown in the BID SCHEDULE. No additional payment shall be made for POLYVINYL CHLORIDE PIPE FOR FORCE MAINS. o2613 Page 2 B. The above payment shall be full compensation for all work covered by this section, including but not limited to: furnishing and installing pipe; flushing, cleaning, and testing pipe; and if required _ in BID SCHEDULE or PLANS, furnishing and installing marking tape or location wire. PART 2 PRODUCTS 201. PIPE A. Rigid polyvinyl chloride plastic pipe shall be manufactured of Type 1, Grade 1, 2,000 psi design stress compound designated as Polyvinyl Chloride 1120 cell classification 12454-B and shall conform to ASTM D1784 compound specifications. conform to TM D2241 and shall B. POIYvworldng pressuressf 200 psoride pipe i shall 21) unless shown otherwise in the have SCHEDULEE or on the r� PLANS. C. Markings on pipe. 1. The manufacturer's name, trademark or logo. 2. Nominal pipe size (for example: 8"). 3. The designation number for the product standard (for example: ASTM D2241). 4. Dimensions ratio number (for example: SDR 21). 5. Pressure rating for PVC pressure pipe (for example: 200 psi). 6. PVC material cell classification (for example: 12454-B). 7. The polyvinyl chloride plastic pipe shall bear the National Sanitation Foundation (NSF) seal of approval. D. Joint type. 1. Push -on joint. 202. MARKING TAPE A, Marling tape shall be metallic detectable type suitable for underground installation. Tape shall resist degradation by elements found in soil. Tape shall be detectable by inductive location techniques. B. Tape shall be three (3") inches wide with overall minimum thickness of 5.0 mils. Mmunum tensile strength shall be 75 pounds for three (3 ") inch wide tape. C. Tape shall be a solid aluminum core of 0.3 mils minimum thickness and 2.9 inches minimum width. The foil core shall be encapsulated in a protective plastic jacket. Foil shall be visible through clear protective jacket on unprinted side of tape. D. Tape color shall resist fading and degradation from ultraviolet light. Color pigments shall be lead-free, chromium free, and cadmium free. 02613 Page 3 E. Printing. - - 1. All printing shall be permanent and encapsulated in plastic. Surface printing is not acceptable. 2. Lettering shall either be in black ink or aluminum letters in colored background 3. Lettering shall be a minimum of one (1 ") inch from top to bottom of letters. F. Message. 1. Message on tape shall read "CAUTION: BURIED FORCE MAIN BELOW" on safety precaution brown colored background. 2. Message shall repeat a nlini of every 24 inches. 203. LOCATION WIRE A. Location wire shall be #12 AWG solid copper wire with moisture resistant Plastic insulation. PART 3 EXECUTION 301. PREPARATION A. Install in locations as shown in PLANS. B. Protect existing landscaping, conditions and features. 302. TRENCHING A. Excavate trench for pipe installation to provide proper grades. B. Keep trench free of debris, material, or obstructions that may damage Pipe. 303. BEDDING A. Prepare bedding. 304. INSTALLATION A. Install pipe and appurtenances. B. Block pipe at all locations where thrust forces are created. 305. BACKFI L AND COMPACT A. Backfill and compact soil around pipe to top of pipe. B. Install location wire above centerline of all encased PVC pipe. Attach wire to blow -offs and casing pipe. Install loop of wire inside valve boxes to facilitate attachment with signal transmitter. 02613 Page4 CE CCAAVand ATION, BAtCto finished ound elevations as directed by KFILL, ANDCSECTION 02226 OMPACTION FOR FORCE MAINS" n� 306. FLUSH AND CLEAN FORCE MAINS A. Flush and clean force mains free of debris, nwd, sediment, and foreign matter in accordance with SECTION 02733 "SANITARY SEWER FORCE MAIN SYSTEMS". 307. HYDROSTATIC TESTS A Perform pressure and leakage tests in accordance with SECTION 02733 "SANITARY SEWER FORCE MAIN SYSTEMS". END OF SECTION 02614 Page 1 SECTION 02614 DUCTILE IRON PIPE FOR FORCE MAINS PART GENERAL 101. WORKINCLUDED A. Provide and install ductile iron pipe as shown in the PLANS or discussed in the CONTRACT DOCUMENTS. B. The CONTRACTOR shall Provide all materials, labor, equipment, tools, etc., and perform all required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS- C. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for installation,or incidental to a complete and fLmctional addressed in the SPECIFICATIONS, shall be provided and installed as of the WORK or 102. REFERENCES A. ANSI A 21.4 - Cement -Mortar Lining for Ductile -Iron Pipe and (AWWA C104) Fittings for Water. B. ANSI A 21.5 - Polyethylene Encasement for Ductile -Iron Pipe Systems. C. ANSI A 21.11 - Rubber -Gasket Joints for Ductile -Iron Pressure Pipe and Fittings. (AWWA Cl11) D, ANSI A 21.15 - Flanged Ductile -Iron Pipe with Ductile -Iron or Gray -Iron Threaded (AWWA C115) Flanges. E. ANSI A 21.50 - Thickness Design of Ductile -Iron Pipe. (AWWA C150) F. ANSI A 21.51 - Ductile -Iron Pipe, Centrifugally Cast, for Water and Other Liquids. (AWWA C151) G. AWWA C600 - Installation of Ductile -Iron Water Mains and Their Appurtenances. 103. SUBMITTALS A. Provide shop drawings and/or manufacturer's literature fully describing the selected product. B. Provide copies of manufacturer's recommended handling, storage, and mstallation instructions. 104. DELIVERY, STORAGE, AND HANDLING A. In accordance with the manufacturer's instractions, install pipe as soon as possible after delivery. Protect all pipe during delivery and storage from sunlight, weather, damage, and contamination o2614 Page 2 Pipe damaged in any fashion shall be replaced by the CONTRACTOR- Pipe contaminated with petroleum products such as diesel fuel exhaust shall be replaced by the CONTRACTOR 105. METHOD OF PAYMENT A. Payment for DUCTILE IRON PIPE FOR FORCE MAINS shall be inclp ed is halb mead PRICE per linear foot as shown in the BID SCHEDULE. No additional ayme for DUCTILE IRON PIPE FOR FORCE MAINS. B. The above payment shall be full compensation for all work covered by this section, including but not limited to: famishing and installing pipe; flushing, cleaning, and testing pipe. PART 2 PRODUCTS 201. PIPE A Ductile Iron Pipe shall be manufactured in complete accordance with and shall meet the test requirements and conditions in the latest edition of the following SPECIFICATIONS: 1. ANSI A 21.50 (AWWA C150) - 2. ANSI A 21.51 (AWWA C151) - B. Interior Coating Thickness Design of Ductile -Iron Pipe. Ductile -Iron Pipe, Centrifilgatly Cast, for Water or Other Liquids. 1. Bituminous coating of a minimum one (1) mil thickness in accordance with all requirements for a seal coat in ANSI A 21.4 (AWWA C104). C. Exterior coating Buried pipe a. Bituminous Coating shall be applied to a minimum depth of one (1) mil in accordance with ANSI A 21.51 (AWWA Cl 51). 2. Exposed pipe a. Shop paint compatible with field applied epoxy paint. D. Mechanical joint Pipe 1 pipe shall have wall thickness equal to or greater than Thickness Class 51. 2. Mechanical joints to include bolt holes and slots, rubber gaskets, bolts and nuts, and appurtenances shall be in accordance with ANSI A 21.11 (AWWA Cl 11). E. Push -on or Slip j oint pipe 1. Pipe shall have wall thickness equal to or greater than Thickness Class 51. 2. Push -on j oints including the rubber gaskets and appurtenances shall be in accordance with ANSI A 21.11(AWWA C11l). 3. Bells shall be contoured to receive bulb -shaped, circular rubber gaskets. 02614 Page 3 4. Plain ends shall be slightly tapered- F. Flanged j oint pipe 1. Pipe shall have a wall thickness equal to or greater than Thickness Class 53. 2. Flanged joints including bolt holes and slots, rubber gaskets, bolts and nuts, and appurtenances shall be in accordance ewit �b �� BSI 21�10��AVJWA C110).include the appendices and shall be completely mP 3. Flanges shall be Class 125 in compliance with ANSI B 16.1. (Class 250, ANSI B 16.1 Flanges cannot be j oined to ANSI A 21.10 Fittings.) 4. Pipe barrel threads shall be tapered pipe threads (NPT) in accordance with ANSI B 2.1 adapted to respective Ductile Iron Pipe outside diameters. 5. Flanges shall be ductile iron. 6. Flanges shall have a tapered pipe thread (NP 1� in accordance with ANSI B 2.1 adapted to respective Ductile Iron Pipe outside diameters. 7. Flanges shall be accurately faced at right angles to the pipe axis. 8. Flange faces shall be coated with a rust preventative coating. The rust preventative coating shall be soluble in commercial solvent for ready removal prior to pipe installation. 9. Threaded flanges shall be individually fitted and machine tightened on the threaded pipe by the manufacturer. 10. Rubber gaskets shall be a minimum of one -eighth (1/8") inch thick. smaller. 11. Rubber gaskets may be ring or full face for pipe twelve (12") inches in diameter or 12. Rubber gaskets shall be ring type for pipe fourteen (14") inches in diameter and larger. 13. The use of any type of flange without threads connecting the flange to the pipe barrel shall not be permitted. 14. Bolts and nuts shall be ASTM A307 Grade B steel bolts threaded in accordance with ANSI G. Restrained Joint Pipe 1 pipe shall have wall thickness equal to or greater than Pressure Class 350. 2. Joints shall be in accordance with section of AW WA Cl 11 entitled "Special Requirements for the Push -On Joint" and shall have minimum pressure ratings of 350 psi. 3. Joints shall have permissible deflection angles equal to or greater than. a. Four degrees for pipe sizes 12" and smaller. b. Three degrees for 14" and 16" pipe. 4. Only types and brands of restrained joint pipe approved by the ENGINEER on a product byproduct basis shall be installed. 02614 Page 4 5. Acceptable products: a. Griffin SNAP-LOK restrained joint pipe b. Griffin BOLT-LOK restrained j oint pipe, 4" size only c. American FLEX -RING restrained joint pipe, sizes 4" through 12" d. Clow SUPER -LOCK restrained joint pipe H. Ball Joint or River Crossing Pipe 1. Pipe shall have wall thiclmesses which equal or exceed the following schedule: SIZE THICKNESS CLASS 4„ 54 6" 54 811 55 10" 55 12" 55 14" 56 16" 56 2. Joints shall be in accordance with section of AWWA Cl 11 entitledSpecial psi. Requirements for the Push -On Joint" and shall have mof 250 unmum pressure ratings 3. Joints shall have permissible deflection angles equal to or greater than twelve degrees. 4. Only types and brands of restrained joint pipe approved by the ENGINEER on a product byproduct basis shall be installed. 5. Acceptable products: a. Griffin SNAP_LOK River Crossing Pipe b American FLEX-LOK Boltless Ball Joint Pipe C. Clow River Crossing Pipe 202. PROTECTIVE ENCASEMENT A. Polyethylene Encasement shall be manufactured in accordance with and shall meet the requirements and conditions set forth in the latest edition of ANSI A 21.5 (AWWA C105) and shall be installed as shown on PLANS or as listed in the BID SCHEDULE. 02614 Page 5 PART 3 EXECUTION 301. PIPE SELECTION A. Pipe shall be provided and installed in accordance with the BID SCCHEDm LE and the accordance LA e and SPECIFICATIONS. In general, ductile iron piping will be provided following schedule unless otherwise shown on the PLANS. Item Buried Exposed.. 1. Joints Push -on joint at Flanged or mechanical pipe/pipe joints. Mechanical j oint at all fittings and valves 2. Outside Coating Bituminous Paint 3 Inside Coating Bituminous Bituminous 302. PREPARATION A. Install in locations as shown in PLANS. B. Protect existing landscaping, conditions and features. 303. TRENCHING A Excavate trench for pipe and fitting installation to provide proper grades. B. Keep trench free of debris, material, or obstructions that may damage pipe. C. Excavation of trenches for subaqueous pipelines shall be performed so as to minimise disturbance of the bottom of the body of water. Excavated materials shall not be placed within bodies of water, wetlands or floodplains. The CONTRACTOR shall dispose of excavated materials in accordance with all applicable Federal, State, and local laws, rules and regulations. 304. BEDDING A. Ground surface above water 1. Prepare bedding in conformance with Type 3 laying conditions as illustrated in Standard AW WA C600 unless otherwise shown on the PLANS. B. Ground surface below water 1. Bedding for subaqueous pipelines shall be native materials excavated to provide uniform bedding. 305. INSTALLATION A. General 1. Construction methods shall be in accordance with AWWA C600. o2614 Page 6 2. Ductile iron pipe shall be installed as Type 3 laying conditions. Pipe bedding shall h native soil placed in four (4") inch layers and compacted. Pipe bedding shall extend to the top of the pipe. - 3. Assemble together and install pipe, fittings, and appurtenances in trench. 4, Protective Encasement a. Install polyethylene encasement in accordance with AWWA C105 as shown on PLANS or as listed in BID SCHEDULE. b, Install protective encasement at all proposed blocking to shield pipe and fittings from concrete. 5. Block pipe and fittings at all locations where thrust forces are created. 6. Complete bedding a Place native soil in four (4") inch layers around pipe and compact the soil - procedure until compacted soil surface reaches top of pipe. (Pipe bedding is considered by these SPECIFICATIONS to extend to the top of pipe.) b. Do not place and compact soil around pipelines laid in streambeds under water. B. Joints 1. Mechanical Joints a. Mechanical joints shallbe installed in accordance to ANSI A 21.11 (AWWA C111) to include all appendices. b. Centrally locate bell on pipe. c. Clean all joint surfaces thoroughly with a wire brush to remove all rust or foreign material prior to assembling the joint. d. Lubricate, with lubricant provided or recommended by the pipe manufacturer, both the gasket and the plain end prior to assembling the joint. e. Tighten bolts in a manner that brings the gland up toward the pipe flange evenly, maintaining approximately the same distance between the gland and the face of the flange at all points around the socket. This may be achieved by partially tightening the bottom bolt first; then, the top bolt; next, the bolts at either side; and, finally, the remaining bolts. f. Repeat bolt tighten process until all bolts are within the range of torques as shown in ANSI A 21.11(AWWA C111) Appendix A. g. If effective sealing is not attained at the maxi specified torques permitted, then the j oiut should be disassembled, thoroughly cleaned, and reassembled- h. Overstressing of bolts to compensate for poor installation practices shall not be permitted. 2. Push -on or Slip Joints a. Push -on or slip joints shall be installed in accordance to ANSI A 21.11 (AWWA C111). 02614 Page 7 b. Centrally locate bell on pipe. c Clean all joint surfaces thoroughly with a wire brush to remove all rust and foreign material prior to assembling the joint. d. Lubricate, with lubricant provided or recommended by the pipe manufacturer, both the gasket and the plain end prior to assembling the l omt. e. Assemble joint by guiding the plain end into the bell until contact is made with the gasket; then by exerting a sufficient compressive force, drive the joint home until the plain end makes full contact with the base of the bell. 3. Flanged Joints a. Flanged joints shall be installed in accordance to the pipe manufacturer's recommendations. b. Clean flange faces removing the protective coating. C. Align flanges and bolt holes installing the appropriate gasket. d. Fit j oint so that the contact face bears uniformly on the gasket. e. Tighten bolts uniformly maintaining uniform bolt stress. f. Overstressing of bolts to compensate for poor alignment or poor installation practices shall not be permitted. 4. Restrained Joints a. Restrained joints shall be assembled in accordance with the pipe manufacturer's recommendations. b. In no case shall joint deflections be permitted which exceed those recommended by the manufacturer. 5. Ball Joints or River Crossing Pipe a. Ball joints shall be assembled in accordance with the pipe manufacturer's recommendations. b. In no case shall joint deflections be permitted which exceed pipe manufacturer's recommendations. 306. BACKFILL AND COMPACT A, Back6ll trench and compact soil as directed by SECTION 02226 "EXCAVATION, BACMML, AND COMPACTION FOR FORCE MAINS" to finished ground elevations. B. However, do not backfill pipelines under water in streams unless otherwise directed on PLANS. Backfill shall be accomplished by natural currents in the stream 307. FLUSH AND CLEAN FORCE MAINS A. Flush and clean force mains free of debris, mud, sediment, and foreign matter in accordance with SECTION 02733 "SANITARY SEWER FORCE MAIN SYSTEMS". 02614 Page 8 308. HYDROSTATIC TESTS A, perform pressure and leakage tests in accordance with SECTION 02733 "SANITARY SEWER FORCE MAIN SYSTEMS". END OF SECTION PART GENERAL 101 102. 103 02637 Pagel SECTION 02637 DUCTILE IRON FITTINGS FOR FORCE MAINS WORK INCLUDED A Provide and install all Ductile Iron Fittings as shown in the PLANS or discussed in the CONTRACT DOCUMENTS. provide all materials, labor, equipment, tools, etc., and perform all B. The CONTRACTOR shall required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS. C. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for tion, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be proor vided and installed as part of the WORK a REFERENCES A. ANSI A21.4 - Cement Mortar Lining for Cast Iron and Ductile Iron Pipe and Fittings. (AWWA C104) B. ANSI A21.10 - Ductile Iron and Gray Iron Fittings, three (3") inch through forty-eight (AWWA C110) (48") inches. C. ANSI A21.11 - Rubber Gasket Joints for Cast Iron and Ductile Iron Pressure Pipe and (AWWA C111) Fittings. D. ANSI A21.53 - Ductile Iron Compact Fittings, three (3") inch through sixteen (16") (AWWA C153) inch E, AWWA C600 - Installation of Gray and Ductile Cast Iron Water Mains and Appurtenances. SUBMITTALS s and/or manufacturer's literature fully describing the selected product - A. provide shop drawing B. Provide copies of manufacturer's recommended handling, storage, and installation instructions. 104. DELIVERY, STORAGE, AND HANDLING A In accordance with the manufacturer's instructions; install fittings as soon as possible after delivery. Protect all fittings during delivery and storage from weather and damag • Fittings damaged in any fashion shall be replaced by the CONTRACTOR 02637 Page 2 105. APPLICATION A. Ductile Iron Fittings shall be used in conjunction with all ductile iron pipe. B. All fittings for pipe six (6) inches in diameter and larger shall be ductile iron. 106. METHOD OF PAYMENT OR MAINS shall be ded within the A Payment for DUCTILE or the WORK as showninin the ON FITTINGSSCHEDULEENo additional payment pace f ashall be made for DUCTILE IRON FITTINGS FOR FORCE MAINS. B. The above payment shall be full compensation for all work covered by this section including, but not limited to: furnishing and installing fittings; making joint connections; blocking; excavation, bedding backfill; and compaction. PART PRODUCTS 201. FITTINGS A, Ductile Iron Fittings shall be manufactured in complete accordance with and shall meet the test requirements and conditions in ANSI A21.10 (AWWA C110) or ANSI A21.53 (AWWA C153). B. All fittings shall have a minimum pressure rating of 250 psi. C. Fittings shall be provided and installed in accordance with the BID SCHEDULE and the PLANS and SPECIFICATIONS. In general, ductile iron fittings will be provided in accordance with the following schedule unless otherwise shown on the PLANS. Item Buried Exposed 1 Joints Mechanical joint except Flanged or under buildings and mechanical structures Push -on allowed with IPS sized PVC Pipe Flanged joint at all j oints under buildings and structures 2. Outside Coating Bituminous Paint 3. Inside Coating Cement Cement D. Joint Type 1. Mechanical Joints a Mechanical joints to include bolt holes and slots, rubber gaskets, bolts and nuts, and appurtenances shall be in accordance with ANSI A21.10 (AWWA C110) and ANSI A21.11 (AWWA C111). 02637 Page 2. Push -on Joints a Push -on joints to include the rubber gaskets and appurtenances shall be in accordance with ANSI A21.11 (AWWA C111). b. Bells shall be contoured to receive bulb -shaped, circular rubber gaskets. 3. Flanged Joints a. Flanged joints to include bolt holes and slots, rubber gaskets, bolts and nuts, and - appurtenances shall be in accordance with ANSI A21.10 (AWWA C110) to include the appendices. b. Flanges shall be accurately faced at right angles to the pipe axis. c. Flange faces shall be coated with a rust preventative coating. The rust preventative coating shall be soluble in commercial solvent for ready removal prior to pipe installation. d. Rubber gaskets shall be a minimum of one -eighth ('/a") inch thick e. Rubber gaskets may be ring or full face for pipe twelve (12") inches in diameter or smaller. £ Rubber gaskets shall be ring type for pipe fourteen (14") inches in diameter and larger. g. Bolts and nuts shall be ASTM A307 Grads B steel bolts threaded in accordance with ANSIBI.1 E. Outside coating 1. Exposed a. Shop paint compatible with field applied epoxy paint. 2. Buried a. Bituminous Coaling shall be applied to a minirrmm depth of one (1) mil in accordance with ANSI A21.10 (AWWA C110). F. Interior Coating t . Cement -mortar coating shall be applied in accordance with ANSI A21.4 (AWWA C104). 202. POLYETHYLENE ENCASEMENT A Polyethylene Encasement shall be manufactured in accordance with shall meet the requirements and conditions set forth in the latest edition of ANSI A 21.5 (AWWA C105) except that it shall have a minimum thickness of six (6) mils. 02637 Page 4 PART 3 EXECUTION 301. PREPARATION A. Install in locations as shown in PLANS. B. Protect existing landscaping, conditions and features. 302. TRENCHING A_ Excavate trench for pipe and fitting installation to provide proper grades. B. Keep trench free of debris, material, or obstructions that may damage pipe. 303. BEDDING A. Prepare bedding. 304• INSTALLATION A. Fittings 1 Install pipe and fittings in accordance with AW WA C600. B. Joints 1, Mechanical Joints e installed in accordance to ANSI A21.11 (AW WA Cl l i) a. Mechanical joints shall b to include all appendices - Cc Centrally locate bell on Pipe- C. Clean all joint surfaces thoroughly with a wire brush to remove all rust or foreign material prior to assembling the joint. d. Lubricate, with lubricant provided or recommended by the pipe manufacturer, both the gasket and the plain end prior to assembling the j oint s in a manner that brings the gland up toward the pipe flange evenly, e. Tighten bolt maintaining in a an ethe same distance between the gland and the face of the flange at all Points around the socket This may be achieved by partially tightening then, the top bolt; next, the bolts at either side; and, finally, e the bottom bolt first; remaining bolts. £ Repeat bolt tighten p . rocess until all bolts are within the range of torques as shown in ANSI A21.11 (AWWA C111) Appendix A. If effective sealing is not attained at the maximum specified torques permitted, then g cleaned, and reassembled. the joint should be disassembled, thoroughly h. Overstressing of bolts to compensate for poor installation practices shall not be permitted. 02637 Page 5 2. Push -on Joints a. Push -on joints shall be installed in accordance to ANSI A21.11 (AWWA C111). b. Centrally locate bell on pipe. C. Clean all joint surfaces thoroughly with a wire brush to remove all rust and foreign material prior to assembling the j oint. d. Lubricate, with lubricant provided or recommends y the pipe manufacturer, both the gasket and the lain end prior to assembling j e. Assemble joint by guiding the plain end into the bell until contact is made with the gasket; then by exerting a sufficient compressive force, drive the joint home until the plain end makes full contact with the base of the bell. Flange Joints a. Flange joints shall be installed in accordance to ANSI A21.10 (AWWA C110) to include all appendices. b. Clean flange faces removing the protective coating. C. Align flanges and bolt holes installing the appropriate gasket. d. Fit joint so that the contact face bears uniformly on the gasket. e. Tighten bolts uniformly maintaining uniform bolt stress. f. Overstressing of bolts to compensate for poor alignment or poor installation practices shall not be permitted. 305. BLOCKING A. Block fittings in accordance with SECTION 02667 "BLOCKING OF FORCE MAINS". 306. BACETILL AND COMPACT A. Backfill and compact to finished ground elevations in accordance with SECTION 02226 "EXCAVATION, BACKFILL, AND COMPACTION FOR FORCE MAINS". 307. FLUSH AND CLEAN FORCE MAINS A. Flush and clean force mains free of debris, mud, sediment, and foreign matter in accordance with SECTION 02733 "SANITARY SEWER FORCE MAIN SYSTEMS". 308. HYDROSTATIC TESTS A. perform pressure and leakage tests in accordance with SECTION 02773 "SANITARY SEWER FORCE MAIN SYSTEMS". END OF SECTION SECTION 02663 BEDDING FOR FORCE MAINS PART GENERAL 02663 Par 1 101. WORK INCLUDED A. Prepare, provide, place and compact bedding as existing soil conditions require in order to properly bed pipe. B. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all for and incidental to a complete installation as shown on required work and services necessary e SPECIFICATIONS in complete accord with the the PLANS and/or called for in th CONTRACT DOCUMENTS. C. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shownor addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK 102. PROTECTION A. Protect bottom of excavations and soil adjacent to and beneath foundations from frost, freezing and precipitation. 103. METHOD OF PAYMENT e respective Price of A Payment epipea showBEDDING the BID SCHEDULE oN ORCE Sshalt be included within additional Payment hall be made for BEDDING the pip FOR FORCE MAINS. B. The above payment shall be full compensation for all work covered by this section including, but not limited to: preparing, Rumishing, and placing stone; and compacting bedding for force mains. PART 2 PRODUCTS 201. BEDDING MATERIAL A. Natural subsoil to be reused free of lumps, clods, boulders, rocks or foreign matter. B. Stone #57. PART 3 EXECUTION 301. INSPECTION A Verify trench is free of debris, snow, ice, water and surfaces are not frozen. 02663 Page 2 B. verify compaction. 302. PREPARATION A. Identify required alignment, grade and datum. 303. BEDDING WITH NATURAL SUBSOIL A. Grade trench bottom to uniform bearing and support for the entire length of the pipe except at bells. B. Excavate recesses in trench bottom for bells. C. Shape trench bottom to conform to lower one -quarter of the pipe barrel. D. Compact material prior to placing pipe. 304. BEDDING WITH STONE A Provide stone bedding when natural subsoil is not adequate to support the force main. B. Remove existing unsuitable material by undercutting to the depth directed by the ENGINEER, but not less than six (6) inches. C. BacM undercut with stone and compact. D. Grade bedding to uniform bearing and support for the entire length of the pipe except at bells. E. Excavate recesses in bedding for bells. F. Shape bedding to conform to lower one -quarter of the pipe barrel. 305. COMPACTION A. Natural subsoil - ninety (90%) percent Standard Proctor. B. Stone - ninety (90%) percent Modified Proctor. 306. FIELD QUALITY CONTROL A. Compaction testing will be performed as required by the ENGINEER END OF SECTION 02667 Pagel SECTION 02667 BLOCKING OF FORCE MAINS PART GENERAL 101. WORKINCLUDED A. Concrete thrust blocking. B. Thrust rodding with eyebolts, rodding lugs, and threaded rods. C. Gripping ring systems. D. wedge action retainer glands. E. Restrained joint systems. F. Polyethylene encasement G. • Submittals. H. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all and cidental to a ete install sary the PLANS and/or called for in then SPECIFIC CONTRACTin complete accin as shown required work and services o d with the on CONTRACT DOCUMENTS. esdevices necessary for I. All supplementary or miscellaneous items, equipment, appurtenanc, or or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shallbe provided and installed as part of the WORK. 102. REFERENCES A, ASTM A36 - Standard Specification for Structural Steel B. ASTM C150 - Standard Specification for Portland Cement C. AWWA C105 - Standard for Polyethylene Encasement for Ductile -Iron Pipe Systems D. AWWA C111 - Standard for Rubber -Gasket Joints for Ductile -Iron Pressure Pipe and Fittings 103. SUBMITTALS A Submit six (6) copies of shop drawings to the ENGINEER for approval. Include as a minimum 1. Name, address, and telephone number of manufacturer. 2. Model number and type. 3. General design data. 4. Materials of construction. 02667 Page 5. Catalog cuts, descriptive literature, and/or detailed specifications fully describing all component parts, devices, and accessories. 6. Installation instructions. 104. METHOD OF PAYMENT A Payment for BLOCKING OF FORCEo additional �ti � payment shall be made priceed within the or BIACgING OF or the WORK as shown in the BID SCHEDUL FORCE MAINS. B. The above payment shall be full compensation for all work covered by this section including, but not limited to: concrete thrust blocking, eyebolts, rodding lugs, threaded rods gripping ring systems, wedge action retainer glands, restrained joints, polyethylene encasement, and other items as specified and/or required for a complete and fully operational installation PART PRODUCTS 201. CONCRETE A. Concrete shallbe a mixture of ASTM C150 Type I portland cement, fine aggregate, coarse aggregate, and clean water as required to provide a workable mix having a mum compressive strength of 2500 psi at twenty-eight (28) days. B. Concrete shall be thoroughly and uniformly mixed prior to placement. C. Concrete shall be kept as dry as possible to facilitate easy shaping of thrust blocking. D. Concrete shall be placed before initial set has begun. 202. EYEBOLTS A. Eyebolts, nuts, and washers shall be fabricated from high strength low alloy steel meeting the composition requirements of AWWA C111 for mechanical joint bolts. B. Eyebolts shall be 90' type, 3/4" nominal diameter withUNC threads. C. Nuts for eyebolts shall be heavy hex type, 3/4" nominal diameter with UNC threads. D. Eyebolts, nuts, and washers shall be suitable for working loads up to 7500 pounds per bolt. 203. RODDING LUGS A. Rodding lugs shall be fabricated from ductile iron meeting or exceeding the requirements of ASTM A536, Grade 65-45-12. B. Rodding lugs shall be specially designed for use with AW WA Cl l l mechanical joint follower glands and 3 /4" threaded rods to restrain piping systems to prevent j oint pull-out. C. Rodding lugs shall be suitable for working loads up to 7500 pounds each when used with 3/4" restraining rods. 02667 Page 3 204. THREADED RODS A- Threaded rods, nuts, and washers shall be fabricated from high strength low alloy steel meeting the requirements of ASTM A36. B. Threaded rods shall be all threaded type, 3/4" nominal diameter with UNC threads' C. Nuts for threaded rods shall be heavy hex type, 314" nominal diameter with UNC threads. D. Threaded rods, nuts, and washers shall be suitable for working loads up to 7500 pounds per rod. 205. GRIPPING RING SYSTEMS A Gripping ring systems shall be specially designed for restraining mechanical j oint pipe systems and shall consist of a special follower gland, gripping ring, gasket, bolts, and nuts. Gripping ring systems shall be available for use on ductile iron pipe and polyvinyl chloride pipe. B. gipping ring systems shall be suitable for use up to the full pressure rating of the pipe for ductile iron and polyvinyl chloride pipe. C. Follower glands and gripping rings shall be fabricated from ductil be heat treated to or ensure the requirements of ASTM A536, Grade 65-45-12. Gripping rings shall proper penetration of rigid pipe materials and shall provide even pipe restraint for the full circumference of the pipe. Gripping rings shall have a built-in stop to prevent damage to the pipe as the ring is compressed. D. Gaskets, bolts, and nuts shall be standard mechanical joint items meeting the requirements of AWWA Clll. E. Glands and rings shall be shop coated. Glands shall be color coded to distinguish them from standard mechanical joint glands. Rings shall be color coded to distinguish between ductile iron pipe sizes andiron pipe sizes. F. Acceptable products: 1. Romac Industries GripRing Pipe Restrainer System 2. Equal. 206. WEDGE ACTION RETAINER GLAND SYSTEMS A. Wedge action retainer gland systems shall be specially designed for restraining mechanical joint pipe and fittings and shall consist of a special follower gland, gripping wedges, gaskets, actuating bolts, gland bolts, and nuts. B. Actuating bolts in the retainer gland shall drive multiple gripping wedges into the pipe outer surface against the direction of pullout increasing the restraint resistance as internal pressure increases. The assembled joint shall maintain flexibility after burial and shall maintain its integrity by controlled and limited expansion during the wedging action- C. Wedge action retainer gland systems shall be suitable for use up to the full Pressure rating of the pipe for ductile iron pipe with a minimum factor of safety of two (2). ents D. Retainer glands shaIl be fabricated from halldbeesu h that the gland can b exceedinge iron meeting or used with the ���d of ASTM A536. Gland dimensions mechanical joint bolts conforming to AWWA Clll. 02667 Page 4 E. Wedges shall be contoured to provide exact fit on the pipe and shall be manufactured of ductile iron heat treated to a minimum hardness of 370 BHN. F. Wedge action actuating bolts shall be twist off type to ensure proper torque. G. Acceptable products: 1. Megalug Series 1100 2. Romac RomaGrip Pipe Restraint 3. Stargrip Series 3000 4. Uni-Flange Series 1400 5. Equal 207. RESTRAINED JOINTS FOR DUCTILE IRON PIPE A Restrained j oints for ductile iron pipe shall be in accordance with SECTION 02614 "DUCTILE IRON PIPE FOR FORCE MAIN 208. POLYETHYLENE ENCASEMENT A. Polyethylene encasement shall meet the requirements of AWWA C105 except that it shall have a minirnum thickness of six (6) mils. PART 3 EXECUTION 301. GENERAL INSTALLATION REQUIREMENTS A. Provide concrete thrust blocking, rodding, gripping ling systems, wedge action retainer glands, restrained joints, or other means approved by the ENGINEER to prevent movement of pipe, fittings, and valves due to internal pressures resulting from hydrostatic testing and system operation. B. Blocking, rodding, gripping ring System, wedge action retainer glands, and restrained joint requirements described in the following paragraphs represent minimum requirements. Adequate blocking and joint restraint necessary to successfully accomplish hydrostatic testing shall be provided in all cases. No additional payment shall be made for blocking, rodding, gripping ring systems, wedge action retainer glands, and joint restraint provided over and above that required in this section. C. Provide concrete thrust blocking as follows: 1. At all fittings except vertical down fittings. D. Provide thrust rodding in addition to concrete thrust blocking as follows: 1. At the ends of steel casings, between the steel casing and the first fitting on the pipe line exiting the casing if the fitting is within. ten (10) feet of the end of the casing. Where a valve is located between the end of the casing and the fitting, thrust rodding shall be carried through the valve. 02667 Page 5 2. Where specifically shown on the PLANS. E Provide gripping rings in addition to concrete thrust blocking as follows: 1. At all vertical up fittings with a nominal size of twelve (12) inches or smaller. 2. Where specifically shown on the PLANS. F. Provide wedge action retainer glands in addition to concrete thrust blocldng as follows: 1 _ At all mechanical joint fittings with a nominal size larger than twelve (12) inches. 2. Where specifically shown on the PLANS. Cr. provide either thrust rodding or gripping rim in addition to concrete thrust blocking as follows: 1. Where bends with a nominal size of and twelve val(12) inches or smaller are within ten (10) feet of tees, crosses, or tapping 2. Where specifically shown on the PLANS- H. Provide thrust rodding and gripping rings in addition to concrete thrust blociing as follows: 1. Where specifically shown on the PLANS. and wedge action retainer glands in addition to concrete thrust blockng I. Provide thrust nodding as follows: 1. At all mechanical joint bends with a nominal size larger than wand . (12) inches where bends are within ten (10) feet of tees, crosses, or tapping sleeves 2. Where specifically shown on the PLANS. Provide gripping rings as follows: 1. At all valves with a nominal size of twelve (12) inches or smaller within twenty (20) feet from the end of a line where future extensions are anticipated. 2. At all vertical down fittings with a nominal size of twelve (12) inches or smaller. 3. Where specifically shown on the PLANS. K. Provide wedge action retainer glands as follows: 1. At all valves with a nominal size larger than twelve (12) inches. 2. At all vertical down fittings with a nominal size larger than twelve (12) inches. 3. Where specifically shown on the PLANS. L. Provide restrained joints for ductile iron pipe as follows: 1. Where specifically shown on the PLANS and/or called for in the BID SCHEDULE. 02667 Page 6 M. Provide thrust rodding, gripping rings, wedge action retainer glands, and/or restrained joints as follows: 1. Where space limitations, poor soil, or disturbed soil will not permit concrete thrust blocking. 2. Where future excavation, such as future tie-in to item being blocked, will render concrete thrust blocking ineffective. 3. Where required to ensure accessibility for repairs. 4. Where specifically shown on the PLANS. 302. PROTECTION A. Comply with all safety regulations and safeguards for the safety and protection of all persons within the construction area. Erect and maintain all work in a safe and stable condition. B. Protect excavations by shoring, bracing, sheet piling, underpinning, or other methods required to prevent cave-in or loose soil from falling into the excavation. C. Protect existing landscaping, trees, structures, fences, pavements, curbs, gutters, bench marks, utilities, and other features which are to remain. D. Repair all damages. Restore all features disturbed to conditions as good as or better than originally existed. 303. PREPARATION A Establish and verify required lines, levels, grades, and datum. B. Verify that trench is free of debris, water, snow, ice, and other deleterious materials and that surfaces are not frozen. C. Verify that item to be blocked is ready for blocking. D. Verify that supporting soil is undisturbed and adequate to support blocking. 304. INSTALLATION OF CONCRETE THRUST BLOCKNG k Cover surfaces of item being blocked with polyethylene encasement to prevent direct contact and bonding with concrete blocking. B. Install concrete thrust blocking with minimum dimensions and cross -sectional areas as shown on the PLANS. C. Excavate soil so that finished concrete thrust blocking is wedge shaped and tapers uniformly from the item being blocked to the surface bearing against soil- Hand trim the sides and bottom of excavated areas and remove all loose soil. Utilize forms if necessary to ensure that thrust blocking is wedge shaped. D. Install concrete thrust blocking to extend from the item being blocked to solid undisturbed earth. Where this is not possible, compact fill between blocking bearing surface and undisturbed fill to at least 90% Standard Proctor density. 02667 Page 7 E, Install concrete thrust blocking so that all joints are accessible for repair and/or future connections. Prevent concrete from covering bolts, nuts, and glands. F. Cure concrete thrust blocking a minimum of twelve (12) hours prior to backfilling. G. Cure concrete thrust blocking a nvnimum of seven () days prior to applying pressure to the line. 305. INSTALLATION OF THRUST RODDING A. Provide thrust rodding with 900 eyebolts, rodding lugs, and threaded rods in accordance with the following table. Nominal Pipe Size Minimum Number of (inches) Thrust Rods per Joint 4 2 6 2 8 2 10 4 12 4 14 6 16 8 18 8 20 10 24 14 B. Evenly space the required number of thrust rods around the j oint C. Tnctall eyebolts in lieu of standard mechanical j oint bolts in all round bolt holes. Install rodding lugs using standard mechanical joint bolts in all slotted bolt holes. Do not use eyebolts in slotted bolt holes. D. Completely tighten mechanical joint bolts before installing threaded rods. E. Where thrust rodding is required at the ends of steel casing, weld eyebolts to the outside of the casing with 1/4" by 3" long welds on each side of eyebolts. Space eyebolts around casing at angular locations corresponding to the angular locations of eyebolts and/or rodding lugs on the fitting or valve. F. Install threaded rods through eyebolts and rodding lugs. Install nut and washer on each end of rod and tighten snug. Do not overtighten. 306. INSTALLATION OF GRIPPING RINGS A. Install gripping ring systems in accordance with the manufacturer's written instructions, these SPECIFICATIONS, the PLANS, and as directed by the ENGINEER- B. Do not allow joint deflections in excess of the manufacturer's recommendations. 02667 Page 8 307. INSTALLATION OF WEDGE ACTION RETAINER GLANDS A. Install wedge action retainer glands in accordance with the manufacturers written instructions, these SPECIFICATIONS, the PLANS, and as directed by the ENGINEER- B. Do not allow joint deflections in excess of the manufacturer's recommendations. 308. INSTALLATION OF RESTRAINED JOINTS FOR DUCTILE IRON PIPE A. Install restrained joints for ductile iron Pipe in accordance with the manufacturer's written instructions, these SPECIFICATIONS, the PLANS, and as directed by the ENGINEER- B. Do not allow joint deflections in excess of the manufacturer's recommendations. END OF SECTION 02733 Pagel SECTION 02733 SANITARY SEWER FORCE MAIN SYSTEMS PART GENERAL 101. WORK INCLUDED A. Force main Piping. B. Valves, boxes and covers. C. Flushing and cleaning. D. Testing. E. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS. F. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK 102. TESTING A The CONTRACTOR shall provide all labor, materials, equipment, instruments, and water and shall perform all work required to test all force mains as specified herein. B. Tests shall be made on sections betweenvalves. Where force main ends are open, provide and place test plugs. Remove test plugs after testing is complete. C. Not more than 60001inear feet of force main shall be included in one (1) test. 103. METHOD OF PAYMENT A. Payment for SANITARY SEWER FORCE MAIN SYSTEMS shall be included within the respective price of the pipe, fittings, valves, and incidentals as shown in the BID SCHEDULE• No additional payment shall be made for SANITARY SEWER FORCE MAIN SYSTEMS. PART 2 PRODUCTS 201. WATER A. Water used for filling, flushing, and testing force mains shall be from a source approved by the ENGINEER PART 3 EXECUTION 301 02733 Paget GENERAL A. The WORK covered under this section is represented by the line complete the VJORKID S ���� ULE which shall include all labor, materials, equipment to comp to the satisfaction of the ENGINEER and OWNER B. Access to WORK shall be along the routes and within easement lines indicated. Any encroachment upon private property with roads, equipment, excavated earth, and construction unless the CONTRACTOR secures specific authorization from material shall not be permitted d All routes shall be left in "a s good" condition the individual property owners concerne ER or his C. All testing shall be all notify dte the PER and theENGINEERENGINEER of the time and location of esentative. The CONTRACTOR shall notify testing. testing at least forty-eight (48) hours prior to performing D. The CONTRACTOR shall, at his own expense, locate and repair defects in sections of force main which fail to pass upon testing. Repaired sections shall be retested at the CONTRACTOR' S expense until the respective section passes both the pressure test and leakage test. E. Visible leaks shall be repaired regardless of whether or not the pipe section being tested passes the pressure test and leakage test. 302. COORDINATION A. Before any installation is begun the CONTRACTOR shall contact all utility companies and coordinate the proposed installation with all existing utilities- B. The CONTRACTOR shall be fully responsible for damage and cost to repair or replace any existing utility, overhead or underground. C. The CONTRACTOR shall be responsible for notifying the utility company when worlang in the area near their existing utilities. 303. CONSTRUCTION avation, pipe laying, and barkfi� must move forward at approximately A- The WORK of exc equal rates of progress. Any exceptions to this Principle, over any considerable length of time, must be with the consent of the ENGINEER B. Pipe, fittings, and valves shall be carefully handled to avoid damage, and while they are suspended over the trench before lowering, they shall be inspected- C.After pipe is laid, raze shall be taken to avoid the entrance of dirt into the Pipe from the trench- D. At the end of each days operation the installed pipe shall be plugged. E. Whenever the bottom of the trench shall be of such nature are the Pipee an "t's�actoly be laid on as stone foundation for the pipe or other structure, the OWNER will require Pip foundation or platform. Such foundations shall be placed as directed by the ENGINEER No extra compensation for labor or stone will be allowed. 02733 Page 3 304. FLUSH AND CLEAN FORCE MAINS A Remove all debris, mud, sediment, and foreign matter from the force main- B. Slowly fill force main with water at a maxiirrum velocity of one (1) foot per second, taking care to expel all air from the pipes. Take precautions to prevent entrapping air in the force main. If necessary, tap pipes at high points and vent the air from the pipes. C. Thoroughly clean force mains by flushing water through force mains at a minimum velocity of two (2) feet per second. In the event the system does not deliver two (2) feet per second flow by design, flush at maximum system velocity. Flush at one or more locations as necessary to obtain the required flushing velocity. D. In the event the system does not deliver the flow anticipated by the ENGINEER, the CONTRACTOR shall locate and remove blockages, purge the lines of air, and flush again- E. Discharge flushing water in a nearby sanitary sewer as authorized by the sewer authority having jurisdiction or in another location as approved by regulatory authorities having j 305. PRESSURE TEST A. Subject all pipe to a hydrostatic pressure 50% in excess of the normal working pressure, but not less that 150 psi. B. Each section tested shall be slowly filled with water at a maximum velocity of one (1) foot per second, care being taken to expel all air from the pipes. Take precautions to prevent entrapping air in the force main. If necessary, tap pipes at high points and vent the air from the pipes. C. The required pressure as measured at the point of lowest elevation shall be applied for not less than three (3) hours, and all pipe, fittings, valves, and joints shall be carefully examined for defects and leaks. D. System shall maintain a minimum of ninety (90%) percent of the initial pressure at the end of one (1) hour after beginning the test, 306. LEAKAGE TEST A. Conduct a leakage test concusently with the pressure test beginning after the pressure test has been satisfactorily conducted for a minimum of one (1) hour. B. The duration of each leakage test shall be two (2) hours, and during the test the main shall be subjected to a hydrostatic pressure 50% in excess of the normal working pressure, but not less than 150 psi. C. Leakage shall be defined as the quantity of water that must be supplied into the pipe section being tested to maintain a pressure within 5 psi of the specified leakage test pressure. D. No pipe installation will be accepted if the leakage is greater than that determined by the formula: Q=LD(P) 133,200 where Q is the allowable leakage in gallons per hour, L is the length of the pipe section being tested in feet, D is the nominal diameter of the pipe in inches, and P is the average test pressure during the leakage test in pounds per square inch gauge. 02733 Page 4 E. The formula is based on an allowable leakage of 11.65 gallons per day per mile Of p per of nominal diameter evaluated at a pressure of 150 psi and shall apply to all typeof pipe and all lengths of pipe. 307. DAILY CLEANUP AND MAINTENANCE OF INGRESS AND EGRESS A The PROJECT area includes residential, commercial, and industrial neighborhoods requiring continuous ingress and egress facilities. The CONTRACTOR shall utilize any and all construction methods, including incidental stone, as necessary to maintain ingress and egress to all properties at all times during the construction period except during the time period required for excavation, pipelaying, and backfilling. B. All excavation, pipelaying, and backfilling activities shall be completed not later than 5:00 p.m. each work day. Incidental stone, grading, provisions for temporary drainage, and cleanup after each day's construction activities shall be completed immediately following completion of excavation, pipelaying, and backfilling operations each day. The CONTRACTOR shall not leave or abandon the work site until all daily cleanup, provisions for temporary drainage, and provisions for convenient ingress and egress have been completed. C. Maintenance of all disturbed areas shall be provided on a daily basis as required to provide drainage and convenient ingress and egress to all properties, minimise threats for injuries associated with vehicular and/or pedestrian traffic, and maintain all unpaved areas in a manner acceptable for normal lawn care activities by adjoining residents and/or property owners. D. The CONTRACTOR shall initiate and continuously pursue until completion all specific cleanup, cleanup maintenance, and/or repair activities requested by the ENGINEER within four (4) hours of the ENGINEER's request. The ENGINEER may request such activities based upon his observations, citizen complaints, directions from regulatory agencies, and items brought to the ENGINEER's attention by others. E. The cost for providing temporary drainage, satisfactory ingress and egress, cleanup, and No additional maintenance of disturbed areas shall be included within the price for the WORK payment shall be provided for these activities. F. Failure by the CONTRACTOR to adequately provide and maintain satisfactory conditions for drainage and/or ingress and egress, correct specific cleanup, cleanup maintenance, and/or repair activities requested by the ENGINEER may result in the employment by the OWNER of an outside party to accomplish these activities. The OWNER may employ an outside party at any time the CONTRACTOR is not on the project site and unsatisfactory conditions exist regarding drainage, ingress, egress, safety, or cleanup. G. Failure by the CONTRACTOR to adequately implement the erosion control measures described in these PLANS and SPECIFICATIONS may result in the employment by the OWNER of an outside party to accomplish these activities. H. Payment for all costs incurred by the OWNER relating to the employment of an outside party shall be reimbursed to the OWNER on a monthly basis by the CONTRACTOR. Failure to reimburse the OWNER shall result in the OWNER deducting payment for these costs from payments to the CONTRACTOR I. The CONTRACTOR should expect these provisions relative to daily cleanup and maintenance of ingress and egress to be strictly and rigorously enforced throughout the CONTRACT period. END OF SECTION SECTION 02936 SEEDING PART GENERAL 101. WORK INCLUDED 02936 Pagel A. Fine grade existing soil. B. Preparation of soil to receive seed- C. Seeding and fertilizing- D. Seed protection on slopes. E. Mulching practices. F. Maintaining seeded areas until acceptance. CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all G. Theete required PANS work and s called forervices necessary in the SPEfor and CIFICA idental to inplcomplete- installation accord shownwith the CONTRACT DOCUNIENTS. H. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK. 102. DELIVERY, STORAGE, AND HANDLING A. Deliver grass seed in original containers showing analysis of seed mixture, percentage of pure seed, year of production, net weight, date of packaging and location of packaging. Damaged packages are not acceptable. B. Deliver fertilizer in waterproof bags showing weight, chemical analysis, and name of manufacturer. 103. METHOD OF PAYMENT A. Payment for SEEDING shall be included within the price for the WORK as shown in the BID SCIjEDULE. No additional payment shall be made for SEEDING. B. The above payment shall be full compensation for all work covered in this section. PART PRODUCTS 201, TOPSOIL A. Natural, fertile agricultural soil capable of sustaining vigorous plant growth, not in frozen or muddy condition, containing not less than six (6%) percent organic matter, and corrected to pH 02936 Page 2 of 5.9 to 7.0. Free from subsoil, slag, clay, stones, lumps, live plants, roots, sticks, crabgrass, coughgrass, noxious weeds, and foreign matter. B, Existing topsoil meeting the above requirements. 202. LI1v1E A. Lime shall be dolomitic agricultural -ground limestone container not less than ten (10%) percent magnesium oxide. 203. FERTILIZER A. Commercial type 10-20-20 with fifty (50%) percent of the elements derived from organic sources. 204. SEED A Seed shall be certified seed or equivalent based on North Carolina Seed Improvement Association requirements for certification. All seed shall be �shed in rior to sealed eedingstandard will not containers. Seed which has become wet, moldy, or otherwise damagedp be acceptable: B. One (1 0) percent maximum weed seed content permitted. C. Seasonal mixtures for NC DOT right-of-ways: 1. From September 1 to February 28: Fifty (50) pounds per acre of Kentucky 31 Fescue, thirty-five (35) pounds per acre of Bermudagrass (nnhulled), and five (5) pounds per acre of Centipede. 2. From March 1 to August 31: Fifty (50) pounds per acre of Kentucky 31 Fescue, twenty-five (25) pounds per acre of Bermudagrass (hulled), and five (5) pounds per acre of Centipede. D. Alternative seasonal mixtures outside NC DOT right-of-ways: From November 16 to February 28: Twenty-five (25) pounds per acre Rye Grain, seventy-five (75) pounds per acre of Tall Fescue, Kentucky 31 or Alta Tall Fescue and fifty (50) pounds per acre Bermuda -grass (=hulled). 2. From March 1 to May 15: Seventy-five (75) pounds per acre of Tall Fescue, Kentucky 31 or Alta Tall Fescue and thirty-five (35) pounds per acre Bermudagrass (hulled). 3. From May 16 to September 15: Fifty (50) pounds per acre of Bermudagrass (hulled) and forty (40) pounds per acre of Annual Lespedeza (Kobe or Korean). 02936 Page 3 4. From September 16 to November 15: Seventy-five (75) pounds per acre Tall Fescue, Kentucky 31 or Alta Tall Fescue and fifty (50) pounds per acre Bermudagrass (unhulled). 205. MULCIENG MATERIAL A Oat or wheat straw, in dry condition, reasonably free from weeds and foreign matter detrimental to plant life. PART 3 EXECUTION 301. GENERAL A. The WORK includes seedbed preparation, Tuning, fertilizing, seeding and mulching of all disturbed areas. The WORK also includes those areas inside or outside of limits of construction that are disturbed by the CONTRACTOR'S operation. B. When conditions are such by reason of drought, high winds, excessive moisture or other factors where satisfactory results will not be obtained, the WORK shall be stopped, and resumed only when conditions are favorable. 302. SEEDBED PREPARATION A. Protect existing underground improvements from damage• ground surface of stumps, stones, roots, cables, wire, grade stakes, and other materials B. Clear the or sub uent maintenance operations. that might hinder proper grading, tillage, seeding q C. Remove contaminated subsoil- D. Grade to eliminate rough spots and low areas where ponding may occur. Maintain smooth, uniform grade. E. Assure positive drainage away from buildings- F. Finish ground level firm and sufficient to prevent sinkage pockets when irrigation is applied. G. Grades on the area to be seeded shall be maintained to atrue and even condition. Maintenance shall include any necessary repairs to previously graded H. Uniformly apply lime at a rate of 4000 pounds per acre prior to preparation of seedbed. 1. Thoroughly till all graded areas to a depth of at least five (5) inches by plowing, disking, harrowing, or other approved methods until the condition of the soil is acceptable. On sites e difficulty where soil conditions are such that high clay content and excessivcmoOace ountil soil mixture in getting clods and lumps effectively pulverized, use rotary tillagemachinery is acceptable and no clods or clumps larger than 112 inches in diameter remain. 7. Remove from site, foreign materials collected during tilling. K. Uniformly apply fertilizer at a rate of 500 pounds per acre of 10-20-20 analysis. 02936 Page 4 L. Incorporate the fertilizer into the upper three or four inches of prepared seedbed Just Prior to the t last tillage operation. However, never apply fertilizer more than tnee nos Prior to seeding. Use fertilizer immediately after delivery or store it in a manner thattwill not permit it to harden or destroy its effectiveness. M. The seedbed should be firm and compact. Prior to seeding, grade the seedbed and lightly compact it with a land roller, such as a cultipacker. 303. SEEDING A. Do not sow seed immediately following rain, when ground is too dry, or during windy Periods. Do not apply grass seed and fertilizer at the same time in the same machine• B. Apply seed at specified seasonal rate. C. Rake seed in lightly- D. Roll seeded area with roller not exceeding 112 pounds (50 kg). E. Apply water with fine spray immediately after each area has been sown. 304. MULCHING PRACTICES tons of mulching material Per acre to seeded areas. Apply mulching A. Apply one (1) to two (2) material with mechanical type equipment and obtain a uniform distribution which permits e areas and areas with thick clumps of straw are sunlight to penetrate to the ground surface. Bar not acceptable. B. Anchor mulching material- 1 In areas with gentle slopes, crimp mulching material into soil. 2. On steeper slopes such as the sides of swales, anchor mulch with netting or asphalt tack. 3 • On road shoulders, anchor mulch with asphalt tack if crimping is unsuccessful. in when by regulatory agencies or if directed by 4. Use asphalt tack in lieu of halt tack in fiieu of crimping will be required in areas with the ENGINEER Typically, asphalt high traffic because of wind generated by -the traffic. 5. On slopes steeper than 2:1, Jute, excelsior, or synthetic matting may be required to protect the slope from erosion. They should be installed before mulch is applied to surrounding areas. 305. WATERING A. Lightly water to aid breakdown of fertilizer and to provide moist soil for seed. 306. MAINTENANCE PERIOD A. Maintenance period: until final acceptance. 02936 Page 5 307. MAINTENANCE A. Maintain surfaces and supply additional topsoil where necessary, including areas affected by erosion. B. Water to ensure uniform seed germination and to keep surface of soil damp. C. Apply water slowly so that surface of soil will not puddle and crast. D. Except for rye grain, cut grass first time when it reaches height of 2% inches (60 mm) and maintain to minimum height of two (2) inches (50 mm). Do not cut more than 1/3 of blade at any one mowing. E. If rye grain is planted mow to maintain grass height between three (3) and six (6) inches until Fescue matures enough to provide ground cover. F. After first mowing water grass sufficient to moisten soil from three (3) inches to five (5) inches (76 to 127 mm) deep. 1 weed kill er when weeds start developing, during calm weather when air temperature G. APPY is above fifty (50) degrees F (10 degrees C). H. Replant damaged grass areas showing root growth failure, deterioration, bare or thin spots, and eroded areas. 308. RESTORATION A. Restore grassed areas until accepted. 309. ACCEPTANCE A.. Seeded areas will be accepted at end of maintenance Period when seeded areas are properly established and otherwise acceptable. END OF SECTION SECTION 11319 DUPLEX GRINDER PUMP STATION PART1 GENERAL 11319 Pagel 101. WORKINCLUDED A Furnishing and installing factory assembled duplex grinder pump stations including tanks, integral accessways, removable core assemblies, pump station controUalarm panels, and direct burial power/alarm cables. B. Dewatering. C. Excavation, backfill, and compaction. D. Foundation and bedding. E. Submittals. F. Installation- G. Startup and testing. H. Spare parts. L Manufacturer's startup services. 1. Training of OWNER'S personnel. K. The CONTRACTOR shall provide all materials, labor, equipment, tools, etc., and perform all required work and services necessary for and incidental to a complete installation as shown on the PLANS and/or called for in the SPECIFICATIONS in complete accord with the CONTRACT DOCUMENTS. L. All supplementary or miscellaneous items, equipment, appurtenances, or devices necessary for or incidental to a complete and functional installation, whether or not shown on the PLANS or addressed in the SPECIFICATIONS, shall be provided and installed as part of the WORK 102. REFERENCES A. ASTM C33 - Standard Specification for Concrete Aggregates B. A.STM D2321 - Standard Practice for Underground Installation of Flexible Thermoplastic Pipe for Sewers and Other Gravity -Flow Applications C. ASTM D2487 - Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System) 103. UNIT RESPONSIBILITY A. Furnish all duplex grinder pump stations and their controls as part of a coordinated system by a single manufacturer. 11319 Page 2 B. Do not obtain any equipment, materials, controls, etc. specified to be provided by the pump station manufacturer from any other source. C. Unit responsibility shall include manufacturer's services for installation, initial startup, testing, and training of the OWNER' S personnel as specified. 104. SUBMUTALS A Submit six (6) copies of shop drawings to the ENGINEER for approval. Include as a minimum 1. Name, address, and telephone number of manufacturer. 2. Model number and type' 3. General design data. 4. Materials of construction. 5. Complete performance curves showing capacity, head, NPSH requirements, efficiency, BHP requirements, and rotative speeds. 6 Complete motor data showing rated size in horsepower, service factor, rotative speed, rated voltage, phase, frequency, and coding. 7. Catalog cuts, descriptive literature, and/or detailed specifications fully describing all component equipment, parts, devices, and accessories. 8. Complete construction details and dimensions showing materials of construction, all parts, type and size of shafting and bearings, connections, and accessory items including type and placement of mounting hardware. 9. Anchor bolt setting plan including number, size, and location of bolts. 10. Electrical diagrams and schematics. 11. Type and thicknesses of shop paints including surface preparation 12. Installation instructions. 13. Name, address, and telephone number of manufacturer's Project Manager. 14. Name, address, and telephone number of warranty service agent. B. Submit five (5) copies of an operations and maintenance manual prepared by the equipment manufacturer to the ENGINEER for approval. Include as a minimum 1. Schedule of all equipment to include manufacturers' names and addresses, model numbers, serial numbers, etc. 2 Manufacturers' catalog cuts, descriptive literature, and/or detailed specifications fully describing all component equipment, parts, devices, and accessories. 3. A clear explanation of all modes of the system including equipment functions, normal operating characteristics, and limiting conditions. 4. Instructions for assembly, installation, alignment, adjustment, and testing. 11319 Page 3 5. Operating instructions for startup, normal operation, regulation and control, shutdown, and emergency conditions. 6. Recommended maintenance and lubrication instructions and schedules. 7. Guide to troubleshooting. 8. Recommended spare parts lists and predicted life of parts subject to wear. n 9. As -built drawings, schematics, and field connection diagrams including color codig and tagging. 10. Performance curves and test data. 11. Any instructions and parts lists packed with or attached to equipment when delivered. 12. Name, address, and telephone number of warranty service agent. 105. DELIVERY, STORAGE, AND HANDLING A. Box, crate, or otherwise completely protect all equipment and materials during shipment, handling, and storage. B. Store all equipment and materials above ground- C. Protect from exposure to the elements and keep all items thoroughly dry at all times. Protect from exposure to excessive heat and direct sunlight. Secure all materials against wind damage- s. discoloration, abuse, abrasion, impact, corrosion, deterioration, and D. Protect from mud, st other damage. E. Store in such a manner as to prevent distortion to equipment, materials, and supporting structures. F. Repair or replace damaged equipment, materials, or structures. 106. WARRANTY A, The CONTRACTOR and the manufacturer shall warrant the installation and the equipment to be of quality construction free of defects in design, materials, and workmanship and to perform as specified or as represented. he a of acceptance o CONTRACTOR completed installation by the OWturer NER, oWNIIL periodr a of one (1) year from g The OWNER shall not accept the installation until it is fully complete and in compliance with the CONTRACT DONS. C. The CONTRACTOR'S warranty shall cover the performance of the system to include any and all adjustments, repairs, and/or replacement of defective material or equipment throughout the warranty period. D Components failing to perform as specified or as represented by the CONTRACTOR and/or the manufacturer, or proven defective in service during the warranty period shall be replaced, repaired, or satisfactorily modified by the CONTRACTOR and/or the manufacturer without additional cost to the OWNER 11319 Page 4 107. METHOD OF PAYMENT payment for DUPLEX GRINDER PUMP STATION shall be included within the price for the A WORK shall be made for DUPLEX WORK as shown in the BID SCHEDULE. No additional payment GRINDER PUMP STATION. B. The above payment shall be full compensation for all work covered by this section including, but not limited to: dewatering, excavation, bedding, concrete ballast, bacld'ill, compact'°n, factory station, Pump station controValarm panel, submittals, Pump and other items as specified assembled duplex grinder installation, startup, testing, connection of building dram, training, and/or required for a complete and fully operational installation. PART2 PRODUCTS 201. GENERAL er station shall be furnished factory built and tested complete with all k The duplex � PUMP P urtenances ready for field installation components, equipment, and app B. All materials exposed to waste water shall have inherentcorrosion stainless steel, and corrosion protection includes epoxy powder coat, cast iron, Polyethylene, polyvinyl chloride. C. All materials and components shall be new and unused of first quality by well known manufacturers. Inferior materials or components shall not be allowed 202. PUMP STATION TANK AND INTEGRAL ACCESSWAY station tank shall consist of a lower wetwell, upper drywell, drywell accessway, and A. The pump and stress accessway cover made of polyethylene selected to provide the required strength cracking resistance. wall B, Corrugated sections shall be double wall construction with smooth internal ti �O�idehave corrugations shall have a minimum amplitude of 1.5 inches. Single tested for minimum thickness of 0.25 inches. All seams shall be thermally welded and factory leak tightness. C The tank shall be designed and constructed to withstand pressures exerted by saturated soil loading at the maximum bury dePa All station components shall function normally when external soil and hydrostatic pressure exposed to 150 percent of the maximum. D. The tank shall have capacities as shown on the PLANS. E. The tank influent connection shall be equipped with on EPDM grommet fitting to accept DW V or Schedule 40 pipe having an outside diameter of 4.50 inches. shall be an integral extension of the wetwell/drywell assembly and shall F. The dre a l ckabl way and cover shall be watertight and shall include a lockable cover assembly. The accessway Provide low profile mounting. G. e of high density polyethylene and shall have a load rating of The accessway cover shall be mad 150 pounds per square foot 11319 Page 5 H. The accessway shall be designed and constructed to enable field adjustment of the station height in increments of three inches or less without the use of adhesives or sealants requiring cure time before installation can be completed. I. The tank and accessway shall have all necessary penetrations molded in and sealed at the factory. Field installed penetrat10ns shall not be allowed. 1. The tank and accessway shall have an integral two (2) inch vent to prevent sewage gases from accumulating in the tank. 203. REMOVABLE CORE ASSEMBLIES A. General 1 The grinder pump station shall include two (2) removable core assemblies each consisting of a pump, grinder assembly, motor, mechanical seal, anti -siphon valve, check valve, discharge piping with quick disconnect assembly and shut-off valve, motor controls, level controls, electrical quick disconnect, and wiring. 2. Core assemblies shall be installed in the station at the factory by the station manufacturer. Field installation of core assemblies in the station shall not be acceptable. 3 • Core assemblies shall be easily removable from the pump station. Each core assembly shall have two (2) lifting hooks complete with a polypropylene lift-0ut harness connected to its top housing to facilitate easy core removal. 4. All mechanical and electrical connections small provide easy disconnect capability for core assembly removal and installation. 5. Core assemblies shall seal tight to the tank deck with a stainless steel latch assembly actuated by a single quick release mechanism requiring no more than a half turn of a wrench. 6. The core assembly shall be watertight and shall be factory tested for watertightness at a minimum pressure of five (5) psig. 7. The top housing of the core assembly shall be attached with stainless steel fasteners. B. Pumps 1. Pumps shall be submersible, integral, motor driven, vertical rotor progressing cavity, grinder sewage pumps specifically designed to grind and pump raw, imscreened, domestic sanitary sewage. 2. Each pump shall be capable of delivering 15 gallons per minute against a total dynamic head of 0 feet (0 psig), 11 gallons per minute against a total dynamic head of 92 feet (40 psig), and 7.8 gallons per minute against a total dynamic head of 185 feet (80 psig). 3. Each pump shall also be capable of operating at negative total dynamic head without overloading its motor. Piping or valving to create false apparent head shall not be allowed. 4. Pump castings shall be cast iron and shall be fully coated with epoxy to a dry film thickness of 8 to 10 mils. All casting joints shall be O--ring sealed. 5. Rotors shall be through -hardened, highly polished, precipitation hardened stainless steel. 11319 Page 6 6. Stators shall be made from specially compounded ethylene propylene synthetic elastomer suitable for domestic wastewater service. Stators shall be resistant to tear and $u�niaon, grease, water, and detergent. Stators shall be stable over wide temperature ranges- shall not be acceptable as stator material. C. Grinder Assemblies 1. Grinder assemblies shall be capable of grinding any trash or stringy material which can m pass through an average domestic sanitary drainage system. Grinder assemblies shall be components in normal domestic sewage, including a reasonable capable of reducing all P, rubber, etc., to amount of foreign objects, such as aaPefreel woo lactic, s �esthrough the passages of the pump and finely -divided particles which will p Y 1-114" diameter discharge piping. 2. Grinder assemblies shall be located immediately below the pumping assembly and shall be direct driven by a single, one-piece motor shaft. 3. Grinder impeller assemblies shall be securely fastened to the pump motor shaft by means of a threaded connection attaching the gender impeller to the motor shaft. Attachment methods using pins or keys shall not be acceptable. 4. Grinder impellers shall be a one-piece cutter wheel of the rotating type with cutter teeth inductively hardened to Rockwell 50 - 60c. A stationary cast iron shredder ring with teeth ground into the ring shall be provided to work with the grinder impeller to achieve effective grinding. The shredder ring shall have a staggered tooth pattern with only one edge engaged at the time to maximize cutting torque. 5. Grinder assemblies shall be dynamically balanced and shall operate without objectionable noise or vibration over the entire range of specified operating pressures. 6. Grinder assemblies shall be constructed so as to eliminate clogging and jamming under all normal operating conditions including starting. 7. Sufficient vortex action shall be created to scour the tank free of deposits or sludge banks which would impair operation of the pumps. These requirements shall be accomplished in conjunction with the Pumps by the following a. Grinder assemblies shall be positioned in such a way that solids are fed in an upward flow direction. b The maximum flow rate through the cutting mechanisms shall not exceed 4 feet per second. C. Inlet shrouds shall have a minimum diameter of 5 inches. d. Impeller mechanisms shall rotate at a nominal speed not greater than 1800 rpm. D. Motors 1. Motors shall be 1 HP,1725 RPM, 240 Volt, 60 Hertz, single phase, capacitor start, ball bearing, air-cooled induction type with Class F insulation, maximum starting current of 30 amperes, and minimum starting torque of 8.4 foot-pounds. Non -capacitor start motors, permanent split capacitor motors, and oil -filled motors shall not be acceptable. 2. The wet portion of motor armatures shall be series 300 stainless steel. 3. Motors shall be press -fit into the core assembly casting. 11319 Page 7 4. Motors shall be equipped with an automatic -reset, integral thermal overload pro tector adsor - incorporated into the motor to provide inherent protection against running locked rotor conditions. The motor protector combination shall be listed by Underwriters Laboratories, Inc. for the application. E. Mechanical Seals 1. Core assemblies shall be equipped with a mechanical shaft seal to prevent leakage between the pump and motor. seats and carbon rotating surfaces with faces precision 2. Seals shall have stationary ceramic lapped and held in position by stainless steel springs. F. Anti -Siphon Valves with a factory 1. Core assemblies shall be equipped -installed, gravity -operated, flapper-type integral anti -siphon valve built into the pump discharge piping. Holes or ports in the discharge piping shall not be acceptable anti -siphon devices. 2. Anti -siphon valve bodies shall be injection molded from an engineered thermoplastic resin. 3. Anti -siphon valves shall have a port diameter not less than 60% of the pump discharge piping inside diameter. 4 All moving parts shall be made of series 300 stainless steel and/or fabric -reinforced synthetic elastomer to ensure corrosion resistance, dimensional stability, and fatigue strength. A nonmetallic hinge shall be an integral part of the flapper assembly, providing a maximum degree of freedom to ensure proper operation at all pressures. G. Check Valves 1. Core assemblies shall be equipped with a factory -installed, gravity -operated, flapper -type integral check valve built into the pump discharge piping. Ball type check valves shall not be acceptable. 2. Check valve bodies shall be injection molded from an engineered thermoplastic resin. 3. Check valves shall be rated for a continuous operating pressure of not less than. 23 5 psi. 4. Check valves shall provide a full -Ported Passageway when open per minute. introduce a friction loss of less than 6 inches of water at a flow of 11 gallons p 5 All moving parts shall be made of series 300 stainless steel and/or fabric -reinforced synthetic elastomer to ensure corrosion resistance, dimensional stability, and fatigue strength. 6. Check valve flapper assemblies shall include a non-metallic, integral binge that provides a maximum degree of freedom to ensure seating at all back pressures. H. Discharge Piping with Quick Disconnect Assemblies and Shut-off Valves 1. All discharge piping and fittings shall be constructed of Type 304 stainless steel. 2. Discharge piping shall include a quick disconnect assembly and ball valve for each core assembly to permit easy removal and replacement of the core assemblies. 11319 Page 8 3. Ball valves shall be stainless steel ball valves rated for a continuous operating pressure of not less than 235 psi. PVC ball valves, brass ball valves, and brass gate valves shall not be acceptable. 4. Discharge piping shall terminate outside the accessway bulkhead with a 1-1/4" stainless steel, female NPT fitting. The bulkhead penetration shall be factory installed and shall be watertight Core Assembly Controls 1. Each core assembly shall include all necessary controls for motor starting and level sensing 2. Motor starting controls shall be located in the top cast iron housing of the core assembly and secured with stainless steel fasteners. Plastic housings for motor starting controls shall not be acceptable. 3. Wastewater level sensing controls shall be housed in separate housings from otorlastic mostarting d ed controls. Level sensing housing shall be made of high -imp act with a thermoplastic elastomer. PVC housings shall not be acceptable. 4. Level sensing devices shall be non -fouling and shall have no moving parts in contact with the wastewater. 5. Level sensing housing shall be mechanically sealed. The use of solvents or glues for sealing shall not be acceptable. All connections shall be sealed with redundant 0-rings- All fasteners shall be series 300 stainless steel - Level Level sensing units shall be integrally attached to the core assembly so that they may be removed from the station with the core assembly and so as to min"ie accumulation of grease and debris. Level sensing units shall be easily removable from the core assembly for service or replacement. tegral air and 7 switchesto sense water ol system shall levl in the wetwell- Floclude two (2) at switches shall not beeaacc acceptable water level sensing devices. g. The air columns shall be integrally molded from a thermoplastic elastomer suitable for use in domestic wastewater with high impact resistance. The air columns shall have only a single connection between the water level being monitored and the pressure switch. 9. One air column/pressure switch unit shall sense "pump on" and "pump off, levels as shown on the PLANS. The control system shall control operation of the pump in response to these levels. 10. The second air column/pressure switch unit shall sense "high water level" as shown on the PLANS. Upon closure of the "high water level" switch, the control system shall energize an alarm circuit and a redundant "pump on" circuit 11. Normal pump operation and high level alarm functions shall not be controlled by the same pressure switch. . 12. Each core assembly shall be equipped with a pressure equalization chamber to continuously compensate for fluctuations in atmospheric pressure and temperature. The equalization chamber shall be constructed of EPDM, high impact polystyrene, and stainless steel and shall be factory tested to verify proper operation. 11319 Page 9 13. The control system shall operate the pump when the push -to -run button on the coutrol/alarin panel is depressed even with the level sensing unit removed from the core assembly. J. Core Assembly Electrical Quick Disconnect 1. Each core assembly shall be equipped with a six (6) conductor,14 gauge, type SJOW cable and NEMA 6P electrical quick disconnect half attached for all power and control functions. 2. The electrical quick disconnect half shall maand maw �� electrical quick disconnects provided with pump station controllalaim panels. 3. Electrical quick disconnects shall requite no tools for connecting and shall seal against water before the electrical connection is made. Seals shall ensure a watertight seal regardless of tightening torque. 4. Electrical quick disconnects shall have a water -tight cover to protect the internal electrical pins while the disconnect is unplugged.. 5. The cable and electrical quick disconnect shall be factory installed, pre -wired, and watertight meeting all UL requirements. 204. DIRECT BURIAL POWER/ALARM CABLES A. A six (6) conductor,14 gauge, type SJOW cable and NEMA 6P electrical quick discommestation ct halfattached shall be provided for each pump station core assembly to connect to the pump controllalarm panel. B. Except at electrical quick disconnects,coSplicing abler cables b shall inuous b allowed- C. 1e assemblies to the pump station controllalarm p C. Quick disconnect halves shall match and mate with quick disconnect halves provided with core assemblies. D. Electrical quick disconnects shall require no tools for connecting and shall seal against water before the electrical connection is made. Seals shall ensure a watertight seal regardless of tightening torque. E. Electrical quick disconnects shall have a water -tight cover to protect the internal electrical pins while the disconnect is unplugged. F. Cable and quick disconnect halves shall be factory assembled, pre -wired, and watertight meeting all UL requirements. G. Power/alarm cables shall be factory installed in the Pump station tank and accessway by the manufacturer. Cable penetrations in the accessway shall be sealed at the factory. Field installation shall not be acceptable. 205. PUMP STATION CONTROL/ALARM PANEL A Each grinder pump station shall be provided with a pump station control/alarm panel as specified herein- B. The panel shall be suitable for wall or pole mounting in an exterior environment where it is subjected to direct sunlight and to water by splashing, dripping, or direct stream. The enclosure C. 10 E. 11319 Pa9e10 shall be a 1 EM 4X unit manufactured of thermoplastic and shall include a hinged' padlockable cover. Normal electric power to the panel shall be 30 Ampere, 120/240 VAC, single phase, 60 Hertz. The panel shall include two (2) 15 Ampere, 2 pole circuit breakers for the pump power circuits and one (1) 15 Ampere, single pole circuit breaker for the panel alarm circuit The panel shall control pump operation as follows: The panel shall include a pump alternation cycle timer to automatically alternate the lead pump at the end of each preset cycle time. Selectable preset times shall include eight (9) days, four (4) days, two (2) days, one (1) day, and three (3) hours. The cycle timer shall be set initially to one (1) day. erator selection of automatic The panel shall include an "auto/both" switch to allow op alternation or operation of both pumps at the same time. 04, a In the `°auto" position, only the lead pump shall be powered under normal operation. The lead pump shall operate off its own level control system in its core assembly. b In the "both" position, both pumps shall be powered as long as the switch remains in the "both" position. Both pumps shall operate automatically and independently based on the level control system in the respective pump's core assembly. 3 The panel shall include "push -to -run" switches for each pump to cause a powered pump to run continuously, while its switch is in the `gym" position. tarting control with the F. The panel shall include high water level alarm and redundant pump s following features. The high water level alarm shall function as follows: a When water level in the wetwell rises to the "alarm" level for either core assembly, the respective alarm pressure switch contacts shall close causing the panel to go into "alarm" mode. b During the "alarm" mode, the panel shall apply power to both core assemblies causing both pumps to run. Each pump shall continue to run until the water level in the wetwell drops below the "oS' level for the respective pump. C. Activation of the audible and visual alarms shall be delayed for a period of 3-1/2 minutes. If the panel is still in "alarm" mode after the delay period has elapsed, the audible and visual alarms shall be activated. d. The audible alarm shall be capable of being silenced by depressing a "silence" pushbutton switch. The,,silence- pushbutton switch shall be externally mounted on the bottom of the panel enclosure and shall be covered by a weatherproof boot e The visual alarm light shall remain illuminated until the liquid level in the wetwell drops below the "off' setting for both pumps. 2. The audible alarm horn shall be externally mounted on the bottom of the panel enclosure and shall produce 90 to 95 dB output at two (2) feet 3 The visual alarm light shall be mounted on top of the panel enclosure in a manner that maintains the panel's NEMA 4X rating. The light shall be mounted inside a red lens of sufficient size to permit easy visibility from a distance of one hundred fifty (150) feet 11319 Page 11 4 The panel shall include a normally open dry contact that closes upon activation of the of three station alarm This contact shall be rated for a minimum ree (3) amperes at o VAC. This contact shall be available for connection to an alarm dialer or SCADA systtem G. The panel shall include LED lights to indicate system operation as follows: 1. Two (2) yellow LED lights (one for each core assembly) shall indicate when the respective core assembly is powered. 2. Two (2) green LED lights (one for each pump) shall indicate when the respective pump is mmming. 3. Two (2) red LED lights (one for each pump) shall indicate the alarm status for the respective pump. H. The entire panel shall be listed by Underwriters Laboratories, Inc. and shall bear a UL label. 206, FACTORY TESTING A. Each grinder pump unit shall be factory tested to verify performance of the equipment. Each pump shall be submerged and operated for a minimum of ninety (90) seconds. B. The wry test shall test all ancillary components including, but not be limited to, the following: 1. Discharge anti -siphon valve. 2. Discharge check valve. 3. Discharge assembly. 4. Level and motor control systems. C. All completely assembled grinder pump stations shall be factory leak tested to ensure the integrity of all joints, seams, and penetration sealing means. 207. BEDDING MATERIAL A. Bedding material shallbe No. 57 stone in accordance with ASTM C33. 208. CONCRETE BALLAST A. Concrete shall be a mixture of ASTM C150 Type I Portland cement, fine aggregate, coarse aggregate, and clean water as required to provide a workable mix having a mini compressive strength of 2500 psi at twenty-eight (28) days. B. Concrete shall be thoroughly and uniformly mixed prior to placement. C. Concrete shall be placed before initial set has begun. 11319 Page12 209. BACKFILL MATERIAL _ .._ A Backfill material shall be one of the following class materials: 1. ASTM D2321, Class I - Angular crushed rock with 100% passing 1%" sieve, not more than 25% passing W sieve, not more than 15% passing No. 4 sieve, and not more - than 12% passing No. 200 sieve. ASTM C33, No. 57 stone is acceptable. 2. ASTM D2321, Class II - Clean coarse grained soils ASTM D2487 types GW, GP, SW, and SP with not more than 12% passing No. 200 sieve. 3. ASTM D2321, Class III- Coarse grained soils with fines ASTM D2487 types GM, GC, SM, and SC with not more than 12% passing No. 200 sieve. B. Clays and silts are not acceptable backfillmaterials. C. No. 57 stone, borrow, and/or select backfill shall be provided if native soil does not meet the requirements specified in the preceding paragraphs or it cannot be compacted to the required density. PART EEXEECUTION 301. EXCAVATION A Excavate for pump station in accordance with SECTION 02221 "EXCAVATION, BACKFI1L, AND COMPACTION FOR STRUCTURES." B. Excavate to the depth required such that one (1) to three (3) inches of the accessway below the bottom of the accessway cover extends above the finished grade line. C. Excavate the hole to a diameter large enough to allow construction of the concrete ballast. 302. BEDDING A Prior to placing bedding, verify that the excavation is free of debris, extraneous material, obstructions, snow, ice, and water and that the subgrade is not frozen. B. place and compact bedding as shown on the PLANS. 303. INSTALLATION OF PUMP STATION A Install station in accordance with the manufacturer's instructions, these SPECIFICATIONS, the PLANS, and as directed by the ENGINEER. B. Remove packing material. Check station to ensure it is sound and free from damage. Do not install station if damaged. Repair all damages. C. Lift and handle station in accordance with the manufacturer's instructions. Do not drop, roll, or lay the station on its side. D. place station accurately at the required location and grade. Install station in true alignment and plumb. 11319 Page 13 304, INSTALLATION OF CONCRETE BALLAST A. Ensure station has been placed at the required location and grade and is in true alignment and plumb. B. Install forms for concrete ballast Ensure that form dimensions are such that the required concrete volume will be provided. C. Do not place concrete until placement of station and ballast forms have been approved by the ENGINEER- D. Fill station with water to the bottom of the influent pipe prior to placing concrete. E. CareMy place concrete so as not to disturb the station or the ballast forms. Vibrate concrete as it is placed to ensure there are no voids. F. Leave forms in place a minimum of twenty-four (24) hours after concrete placement. Remove forms prior to placing backfill. 305. BACKFILL AND COMPACT A. Place and compact backfill materials in accordance with SECTION 02221- "EXCAVATION, BACKFILL, AND COMPACTION FOR STRUCTURES.- B. Ensure concrete ballast has cured sufficiently prior to placing backfill. C. Slope final ground surface away from the station. 306. PIPE CONNECTIONS A. Install a five (5) foot section of influent pipe and cap ready for connection to the building drain after the pump station and discharge line are ready for service. B. Install discharge line as shown on the PLANS. C. Ensure that all connections are watertight. 307. INSTALLATION OF PUMP STATION CONTROL/ALARM PANEL A. Install the pump station control/aLum panel in accordance with the manufacturer's instructions, these SPECIFICATIONS, the PLANS, and as directed by the ENGINEER B. Install field wiring from the electrical supply panelboard to the pump station control/alarm panel. C. Install field wiring between the control/alarm panel and the pump station. D. Check system for correct wiring connections and voltage prior to energization. 308. INITIAL STARTUP A. Do not startup a pump station and service lateral until the force main receiving the station discharge has been installed, tested, and placed into service. 11319 Page 14 B. Provide the services of the manufacturer's field engineer or representative for a period of not less than one (1) day with not less than eight (8) hours per day at the time of initial startup to: 1. Verify proper installation. 2. Place the equipment and system in operation. 3. Adjust the equipment and system for proper operation 4. Perform and/or witness field testing. 5. Instruct the CONTRACTOR'S personnel in proper startup and field testing procedures for the equipment and systems. 6. Instruct the OWNER'S personnel in the proper operation and maintenance of the equipment and system. C. Coordinate the time of initial startup with the ENGINEER and the OWNER- D. Provide an electrician's services during initial startup and field testing. E. Allow the OWNER'S personnel to accompany the manufacturer's field representative during initial startup to observe procedures and to become familiar with system components. F. If the pump station cannot be successfiilly started up and field tested within one (1) day, provide the services of the manufacturer's field engineer or representative for additional time as required at no additional cost to the OWNER.. 309. FIELD TESTING A. After the pump station has been started up and adjusted, perform field testing to demonstrate that all elements of the pump station satisfy the requirements of these SPECIFICATIONS. B. Coordinate the time of field testing with the ENGINEER and the OWNER Notify the ENGINEER and OWNER at least one (1) week prior to beginning field testing. C. Provide all special testing materials and equipment. D. Conduct field test as follows: 1. Inspect pump and related piping to ensure there are no blockages. 2. Ensure adequate liquid/sewage is available to perform testing. 3. Record type and temperature of liquid to be pumped. 4. Put pump in operation and measure discharge pressure. 5. Determine average pumping rate by timing wetwell drawdown with no inflow or by other appropriate means approved by the ENGINEER 6. Completely test the control system for all fiunctions to ensure proper functioning. 7. After testing as outlined above, operate the pump station and control system through a minimum of two (2) full normal cycles and two (2) alarm cycles. 11319 Page15 310. TRA UNG OF OWNER'S PERSONNEL k Provide the services of the manufacturer's field engineer or representative at the time of initial startup to instruct the OWNER'S personnel in operation and maintenance of the equipment and system. END OF SECTION