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PART 3 - EXECUTION

3.1EARTHWORK

A.Comply with excavating, trenching, and backfilling requirements in Section 312000 "Earth Moving."

3.2PIPING INSTALLATION

Retain one of two "Water-Main Connection" paragraphs below. Retain first paragraph if tap is made by utility company; retain second if tap is made by Contractor.

A.Water-Main Connection: Arrange with water utility company for tap of size and in location indicated in water main.

B.Water-Main Connection: Tap water main according to requirements of water utility company and of size and in location indicated.

Retain first paragraph below for tapping of pipe with connections larger than NPS 2 (DN 50).

C.Make connections larger than NPS 2 (DN 50) with tapping machine according to the following:

1.Install tapping sleeve and tapping valve according to MSS SP-60.

2.Install tapping sleeve on pipe to be tapped. Position flanged outlet for gate valve.

3.Use tapping machine compatible with valve and tapping sleeve; cut hole in main. Remove tapping machine and connect water-service piping.

4.Install gate valve onto tapping sleeve. Comply with MSS SP-60. Install valve with stem pointing up and with valve box.

Retain first paragraph below for tapping of pipe with connections NPS 2 (DN 50) and smaller.

D.Make connections NPS 2 (DN 50) and smaller with drilling machine according to the following:

1.Install service-saddle assemblies and corporation valves in size, quantity, and arrangement required by utility company's standards.

2.Install service-saddle assemblies on water-service pipe to be tapped. Position outlets for corporation valves.

3.Use drilling machine compatible with service-saddle assemblies and corporation valves. Drill hole in main. Remove drilling machine and connect water-service piping.

4.Install corporation valves into service-saddle assemblies.

5.Install manifold for multiple taps in water main.

6.Install curb valve in water-service piping with head pointing up and with service box.

E.Comply with NFPA 24 for fire-service-main piping materials and installation.

F.Install copper tube and fittings according to CDA's "Copper Tube Handbook."

Retain subparagraph below if required.

1.Install encasement for tubing according to ASTM A 674 or AWWA C105.

G.Install ductile-iron, water-service piping according to AWWA C600 and AWWA M41.

Retain subparagraph below if required.

1.Install encasement for piping according to ASTM A 674 or AWWA C105.

H.Install PE pipe according to ASTM D 2774 and ASTM F 645.

I.Install PVC, AWWA pipe according to ASTM F 645 and AWWA M23.

J.Install fiberglass AWWA pipe according to AWWA M45.

Revise first paragraph below for required minimum depth if known.

K.Bury piping with depth of cover over top at least [30 inches (750 mm)] <Insert dimension>, with top at least [12 inches (300 mm)] <Insert dimension> below level of maximum frost penetration, and according to the following:

1.Under Driveways: With at least [36 inches (910 mm)] <Insert dimension> of cover over top.

2.Under Railroad Tracks: With at least [48 inches (1220 mm)] <Insert dimension> of cover over top.

3.In Loose Gravelly Soil and Rock: With at least [12 inches (300 mm)] <Insert dimension> of additional cover.

L.Install piping by tunneling or jacking, or combination of both, under streets and other obstructions that cannot be disturbed.

M.Extend fire-suppression water-service piping and connect to water-supply source and building fire-suppression water-service piping systems at locations and pipe sizes indicated.

1.Terminate fire-suppression water-service piping within the building at the [floor slab] [wall] until building-water-piping systems are installed. Terminate piping with caps, plugs, or flanges as required for piping material. Make connections to building's fire-suppression water-service piping systems when those systems are installed.

Retain first paragraph below for piping with gasketed joints and revise to suit Project; delete if not required.

N.Install underground piping with restrained joints at horizontal and vertical changes in direction. Use restrained-joint piping, thrust blocks, anchors, tie-rods and clamps, and other supports.

O.Comply with requirements in Section 211200 "Fire-Suppression Standpipes," Section 211313 "Wet-Pipe Sprinkler Systems," and Section 211316 "Dry-Pipe Sprinkler Systems" for fire-suppression-water piping inside the building.

P.Comply with requirements in Section 221116 "Domestic Water Piping" for potable-water piping inside the building.

Q.Install sleeves for piping penetrations of walls, ceilings, and floors. Comply with requirements for sleeves specified in Section 210517 "Sleeves and Sleeve Seals for Fire-Suppression Piping."

Retain paragraph below for piping that penetrates an exterior concrete wall or concrete slab.

R.Install sleeve seals for piping penetrations of concrete walls and slabs. Comply with requirements for sleeve seals specified in Section 210517 "Sleeves and Sleeve Seals for Fire-Suppression Piping."

3.3JOINT CONSTRUCTION

A.Install couplings, flanges, flanged fittings, unions, nipples, and transition and special fittings that have finish and pressure rating same as or higher than systems pressure rating for aboveground applications unless otherwise indicated.

B.Install unions adjacent to each valve in tubing NPS 2 (DN 50) and smaller.

C.Install flanges, flange adaptors, or couplings for grooved-end piping on valves, apparatus, and equipment having NPS 2-1/2 (DN 65) and larger end connections.

D.Ream ends of tubes and remove burrs.

E.Remove scale, slag, dirt, and debris from outside and inside of pipes, tubes, and fittings before assembly.

F.Copper-Tubing, Brazed Joints: Join copper tube and fittings according to CDA's "Copper Tube Handbook," "Brazed Joints" Chapter.

G.Copper-Tubing, Pressure-Sealed Joints: Use proprietary crimping tool and procedure recommended by copper, pressure-seal-fitting manufacturer.

H.Ductile-Iron Piping, Gasketed Joints for Fire-Service-Main Piping: UL 194.

I.Ductile-Iron Piping, Grooved Joints: Cut-groove pipe. Assemble joints with grooved-end, ductile-iron-piping couplings, gaskets, lubricant, and bolts.

J.Flanged Joints: Select appropriate gasket material in size, type, and thickness suitable for water service. Join flanges with bolts according to ASME B31.9.

K.PE Piping Heat-Fusion Joints: Clean and dry joining surfaces by wiping with clean cloth or paper towels. Join according to ASTM D 2657.

L.PVC Piping Gasketed Joints: Use joining materials according to AWWA C900. Construct joints with elastomeric seals and lubricant according to ASTM D 2774 or ASTM D 3139.

M.Fiberglass Piping Bonded Joints: Use adhesive and procedure recommended by piping manufacturer.

N.Dissimilar Materials Piping Joints: Use adapters compatible with both piping materials, with OD, and with system working pressure.

O.Do not use flanges or unions for underground piping.

3.4ANCHORAGE INSTALLATION

Delete this article if anchorages are not required.

A.Anchorage, General: Install water-distribution piping with restrained joints. Anchorages and restrained-joint types that may be used include the following:

Retain subparagraphs below for types of anchorages and restrained joints permitted.

1.Concrete thrust blocks.

2.Locking mechanical joints.

3.Set-screw mechanical retainer glands.

4.Bolted flanged joints.

5.Heat-fused joints.

6.Pipe clamps and tie rods.

7.<Insert devices>.

B.Install anchorages for tees, plugs and caps, bends, crosses, valves, and hydrant branches in fire-suppression water-service piping according to NFPA 24 and the following:

1.Gasketed-Joint, Ductile-Iron, Water-Service Piping: According to AWWA C600.

2.Gasketed-Joint, PVC Water-Service Piping: According to AWWA M23.

3.Bonded-Joint Fiberglass, Water-Service Piping: According to AWWA M45.

C.Apply full coat of asphalt or other acceptable corrosion-resistant material to surfaces of installed ferrous anchorage devices.

3.5VALVE INSTALLATION

A.AWWA Gate Valves: Comply with AWWA C600 and AWWA M44. Install each underground valve with stem pointing up and with valve box.

B.AWWA Valves Other Than Gate Valves: Comply with AWWA C600 and AWWA M44.

C.UL-Listed or FM Global-Approved Gate Valves: Comply with NFPA 24. Install each underground valve and valves in vaults with stem pointing up and with vertical cast-iron indicator post.

D.UL-Listed or FM Global-Approved Valves Other Than Gate Valves: Comply with NFPA 24.

E.MSS Valves: Install as component of connected piping system.

F.Corporation Valves and Curb Valves: Install each underground curb valve with head pointed up and with service box.

G.Pressure-Reducing Valves: Install in vault or aboveground between shutoff valves.[ Install full-size valved bypass.]

H.Support valves and piping, not direct buried, on concrete piers. Comply with requirements for concrete piers in [Section 033000 "Cast-in-Place Concrete."] [Section 033053 "Miscellaneous Cast-in-Place Concrete."]

3.6DETECTOR CHECK VALVE INSTALLATION

A.Install in vault or aboveground.

B.Install for proper direction of flow. Install bypass with water meter, gate valves on each side of meter, and check valve downstream from meter.

C.Support detector check valves and piping on concrete piers. Comply with requirements for concrete piers in [Section 033000 "Cast-in-Place Concrete."] [Section 033053 "Miscellaneous Cast-in-Place Concrete."]

3.7WATER METER INSTALLATION

Delete this article if utility company provides water meters.

A.Install water meters, piping, and specialties according to utility company's written instructions.

Retain one or more of three "Water Meters" paragraphs below.

B.Water Meters: Install [displacement] [turbine]-type water meters NPS 2 (DN 50) and smaller in meter boxes with shutoff valves on water meter inlets. Include valves on water meter outlets, and include valved bypass around meters unless prohibited by authorities having jurisdiction.

C.Water Meters: Install [compound] [turbine]-type water meters NPS 3 (DN 80) and larger in meter vaults. Include shutoff valves on water meter inlets and outlets, and include valved bypass around meters. Support meters, valves, and piping on brick or concrete piers.

D.Water Meters: Install detector-type water meters in meter vault according to AWWA M6. Include shutoff valves on water meter inlets and outlets, and include full-size valved bypass around meters. Support meters, valves, and piping on brick or concrete piers.

E.Support water meters and piping NPS 3 (DN 80) and larger on concrete piers. Comply with requirements for concrete piers in [Section 033000 "Cast-in-Place Concrete."] [Section 033053 "Miscellaneous Cast-in-Place Concrete."]

3.8ROUGHING-IN FOR WATER METERS

Retain this article if Contractor is to rough-in for water meters to be installed by utility company.

A.Rough-in piping and specialties for water meter installation according to utility company's written instructions.

3.9BACKFLOW PREVENTER INSTALLATION

A.Install backflow preventers of type, size, and capacity indicated. Include valves and test cocks. Install according to requirements of plumbing and health department and authorities having jurisdiction.

B.Do not install backflow preventers that have relief drain in vault or in other spaces subject to flooding.

C.Do not install bypass piping around backflow preventers.

Revise or delete paragraph below to suit Project.

D.Support NPS 2-1/2 (DN 65) and larger backflow preventers and piping on concrete piers. Comply with requirements for concrete piers in [Section 033000 "Cast-in-Place Concrete."] [Section 033053 "Miscellaneous Cast-in-Place Concrete."]

3.10WATER METER BOX INSTALLATION

A.Install water meter boxes in paved areas flush with surface.

B.Install water meter boxes in grass or earth areas with top [2 inches (50 mm)] <Insert dimension> above surface.

3.11CONCRETE VAULT INSTALLATION

A.Install precast concrete vaults according to ASTM C 891.

3.12PROTECTIVE ENCLOSURE INSTALLATION

A.Install concrete base level and with top approximately [2 inches (50 mm)] <Insert dimension> above grade.

B.Install protective enclosure over valves and equipment.

C.Anchor protective enclosure to concrete base.

3.13FIRE-DEPARTMENT CONNECTION INSTALLATION

A.Install ball drip valves at each check valve for fire-department connection to mains.

B.Install protective pipe bollards [on two sides of] [on three sides of] <Insert arrangement> each freestanding fire-department connection. Pipe bollards are specified in Section 055000 "Metal Fabrications."

3.14ALARM DEVICE INSTALLATION

Delete this article if alarm devices are specified in Section 211200 "Fire-Suppression Standpipes" or Section 221313 "Wet-Pipe Sprinkler Systems."

A.General: Comply with NFPA 24 for devices and methods of valve supervision. Underground valves with valve box do not require supervision.

Retain "Supervisory Switches" or "Locking and Sealing" Paragraph below to suit requirements of authorities having jurisdiction.

B.Supervisory Switches: Supervise valves in open position.

1.Valves: Grind away portion of exposed valve stem. Bolt switch, with plunger in stem depression, to OS&Y gate-valve yoke.

2.Indicator Posts: Drill and thread hole in upper-barrel section at target plate. Install switch, with toggle against target plate, on barrel of indicator post.

C.Locking and Sealing: Secure unsupervised valves as follows:

1.Valves: Install chain and padlock on open OS&Y gate valve.

2.Post Indicators: Install padlock on wrench on indicator post.

D.Pressure Switches: Drill and thread hole in exposed barrel of fire hydrant. Install switch.

E.Water-Flow Indicators: Install in water-service piping in vault. Select indicator with saddle and vane matching pipe size. Drill hole in pipe, insert vane, and bolt saddle to pipe.

F.Connect alarm devices to building's fire-alarm system. Wiring and fire-alarm devices are specified in [Section 283111 "Digital, Addressable Fire-Alarm System."] [Section 283112 "Zoned (DC Loop) Fire-Alarm System."]

3.15CONNECTIONS

Coordinate piping installations and specialty arrangements with Drawings and with requirements specified. If Drawings are explicit enough, these requirements may be reduced or omitted.

A.Connect fire-suppression water-service piping to [utility water main] [existing water main] <Insert piping system>. Use [tapping sleeve and tapping valve] [service clamp and corporation valve] <Insert method>.

B.Connect fire-suppression water-service piping to interior fire-suppression piping.

C.Connect waste piping from concrete vault drains to [sanitary sewerage system. Comply with requirements in Section 221313 "Facility Sanitary Sewers" for connection to sanitary sewer] [
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