221116_DOMESTIC_WATER_PIPING_JPB.pdf

CHICOPEE ARMORY REHABILITATION MMD PROJECT NO. 985101

CHICOPEE, MASSACHUSETTS ISSUED FOR BID - 05/20/11

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SECTION 221116

DOMESTIC WATER PIPING

PART 1 - GENERAL

1.1 RELATED DOCUMENTS

A. Drawings and general provisions of the Contract, including General and Supplementary

Conditions and Division 1 Specification Sections, apply to this Section.

B. The requirements of Section 220100, “Basic Plumbing Requirements” apply to work defined by this Section.

C. The requirements of Section 220500, “Basic Plumbing Materials and Methods” apply to work defined by this Section.

1.2 SUMMARY

A. This Section includes the following piping systems to a point 10-feet outside the building wall, unless otherwise noted;

1. Water Supply Piping.

a. Domestic Cold, Hot and Recirculated Hot Water.

b. Non-potable Water.

2. Drainage, Waste and Vent, (DWV).

a. Sanitary Waste and Vent.

b. Storm Drainage.

c. Indirect Waste.

B. Related Sections include the following:

1. Division 33 Sections for site utility service piping to a point 10-feet outside the building.

2. Division 7, "Through-Penetration Firestop Systems" for materials and methods for sealing pipe penetrations through fire and smoke barriers.

3. Division 7, "Joint Sealants" for materials and methods for sealing pipe penetrations through exterior walls.

4. Section 220700, “Pipe Insulation” for system insulation requirements.

5. Section 221119, “Plumbing Specialties” for water distribution piping specialties.

1.3 DEFINITIONS

A. PVC: Polyvinyl chloride plastic.

B. EPDM: Ethylene-propylene-diene terpolymer.

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C. CLDI: Cement Lined Ductile Iron.

D. DWV: Drainage, Waste and Vent piping systems.

1.4 PERFORMANCE REQUIREMENTS

A. Provide components and installations capable of producing piping systems with the following minimum working pressure ratings, unless otherwise noted.

1. Water Supply Systems, Above Ground: 125 psig.

2. Water Supply Systems, Below Ground: 150 psig.

3. DWV, (Gravity) Systems: 10 foot of head of water.

1.5 SUBMITTALS

A. General: See Division 1 for general submittal and product substitution requirements.

B. Pre-Construction Submittals: Submit the following items prior to commencing with installations.

1. Product Data: For pipe, tube, fittings, valves and couplings.

2. Product Data: For pipe, tube, fittings, couplings, valves and water meters.

C. Submittals During Construction: Submit the following items at the intervals indicated.

1. Pressure test results after system rough-ins.

a. Test results to include Plumbing Inspector sign-off.

b. If systems are tested in portions, submit results as each portion is tested.

D. Post Construction Submittals: Submit the following items upon completion of system installations.

1. Water Disinfection statement and final water quality test results.

2. Final Plumbing Inspector Sign-off.

1.6 QUALITY ASSURANCE

A. Piping materials shall bear label, stamp, or other markings of specified testing agency.

B. Comply with NSF 14, "Plastics Piping System Components and Related Materials," for plastic, potable domestic water piping and components. Include marking "NSF-pw" on piping.

C. Comply with NSF 14, "Plastics Piping Systems Components and Related Materials," for plastic piping components. Include marking with "NSF-dwv" for plastic drain, waste, and vent piping;

"NSF-drain" for plastic drain piping; "NSF-tubular" for plastic continuous waste piping; and

"NSF-sewer" for plastic sewer piping.

D. Comply with NSF 61, "Drinking Water System Components - Health Effects; Sections 1 through 9," for potable domestic water piping and components.

PART 2 - PRODUCTS

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2.1 MANUFACTURERS

A. Manufacturers: Subject to compliance with requirements, provide products by one of the manufacturers listed below.

B. No-hub Couplings:

1. Husky Technologies.

2. Ideal; A Gates Group Company.

3. Tyler Pipe Co.

4. Charlotte Pipe and Foundry.

C. Ball Valves:

1. Conbraco Industries, Inc.; Apollo Div.

2. Crane Co.; Crane Valve Group; Jenkins Valves.

3. Crane Co.; Crane Valve Group; Stockham Div.

4. NIBCO INC.

5. Watts Industries, Inc.; Water Products Div.

6. Hammond Valve.

7. Milwaukee Valve Company.

D. Gate Valves:

1. Crane Co.; Crane Valve Group; Stockham Div.

2. Grinnell Corporation.

3. Hammond Valve.

4. Milwaukee Valve Company.

5. NIBCO INC.

6. Watts Industries, Inc.; Water Products Div.

E. Butterfly Valves:

1. Crane Co.; Crane Valve Group; Stockham Div.

2. Grinnell Corporation.

3. Hammond Valve.

4. Milwaukee Valve Company.

5. NIBCO INC.

6. Watts Industries, Inc.; Water Products Div.

F. Swing Check Valves:

1. Crane Co.; Crane Valve Group; Stockham Div.

2. Grinnell Corporation.

3. Hammond Valve.

4. Milwaukee Valve Company.

5. NIBCO INC.

6. Watts Industries, Inc.; Water Products Div.

2.2 PIPING MATERIALS

A. Refer to Part 3 "Pipe and Fitting Applications" Article for applications of pipe, tube, fitting, and joining materials.

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B. Transition Couplings for Aboveground Pressure Piping: Coupling or other manufactured fitting the same size as, with pressure rating at least equal to and ends compatible with, piping to be joined.

2.3 DUCTILE IRON PIPE AND FITTINGS

A. Cement-Lined, Mechanical-Joint, Ductile-Iron Pipe, (CLDI): AWWA C151/A21.51, with mechanical-joint, bell- and plain-spigot ends, AWWA C205 cement-mortar lining.

1. Mechanical-Joint, Ductile-Iron Fittings: AWWA C110/A21.10, ductile- or gray-iron standard pattern, AWWA C205 cement-mortar lining.

a. Glands, Gaskets, and Bolts: AWWA C111/A21.11, ductile- or gray-iron glands, rubber gaskets, and steel bolts.

B. Cement-Lined, Push-on-Joint, Ductile-Iron Pipe, (CLDI): AWWA C151/A21.51, with push-on-joint, bell- and plain-spigot ends, AWWA C205 cement-mortar lining.

1. Push-on-Joint, Ductile-Iron Fittings: AWWA C110/A21.10, ductile- or gray-iron standard pattern, AWWA C205 cement-mortar lining.

a. Gaskets: AWWA C111/A21.11, rubber.

b. Restraints: push-on joints to include pipe clamp and tie-rod reinforcement.

2.4 COPPER TUBE AND FITTINGS

A. Hard Copper Tube: [ASTM B 88, Type L (ASTM B 88M, Type B)] [and] [ASTM B 88, Type M (ASTM B 88M, Type C)] water tube, drawn temper.

B. Soft Copper Tube: [ASTM B 88, Type K (ASTM B 88M, Type A)] [and] [ASTM B 88, Type L (ASTM B 88M, Type B)] water tube, annealed temper

C. Cast-Copper, Solder-Joint Fittings: ASME B16.18, pressure fittings.

D. Wrought-Copper, Solder-Joint Fittings: ASME B16.22, wrought-copper pressure fittings.

E. Bronze Flanges: ASME B16.24, Class 150, with solder-joint ends.

F. Copper Unions:

1. MSS SP-123.

2. Cast-copper-alloy, hexagonal-stock body.

3. Ball-and-socket, metal-to-metal seating surfaces.

4. Solder-joint or threaded ends.

G. Copper DWV Tube: ASTM B 306, drainage tube, drawn temper.

1. Copper Drainage Fittings: ASME B16.23, cast copper or ASME B16.29, wrought copper, solder-joint fittings.

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2.5 CAST-IRON SOIL PIPE AND FITTINGS

A. Hub-and-Spigot Pipe and Fittings: ASTM A 74, Service class.

1. Gaskets: ASTM C 564, rubber.

B. Hubless Pipe and Fittings: ASTM A 888 or CISPI 301.

1. Couplings: ASTM C 1277 assembly of metal housing, corrosion-resistant fasteners, and

ASTM C 564 rubber sleeve with integral, center pipe stop.

a. Heavy-Duty, Type 304, Stainless-Steel Couplings: ASTM A 666, Type 304, stainless-steel shield; stainless-steel bands; and sleeve.

1) NPS 1-1/2 to NPS 4: 3-inch wide shield with 4 bands.

2) NPS 5 to NPS 10: 4-inch wide shield with 6 bands.

2.6 VALVES

A. Balancing and drain valves are specified in Division 22 Section "Plumbing Specialties."

B. Refer to Part 3 "Valve Applications" Article for applications of valve types.

C. General Requirements:

1. Valve Pressure and Temperature Ratings: Not less than indicated and as required for system pressures and temperatures.

2. Valve Sizes: Same as upstream pipe, unless otherwise indicated.

3. Handwheel: For valves other than quarter-turn types.

4. Lever Handle: For quarter-turn valves NPS 6 (DN 150) and smaller.

5. Extended Valve Stems: On insulated valves.

6. Valve Flanges: ASME B16.1 for cast-iron valves, ASME B16.5 for steel valves, and

ASME B16.24 for bronze valves.

7. Valve Grooved Ends: AWWA C606, NPS 2-1/2 (DN 65) and larger.

8. Solder Joint: With sockets according to ASME B16.18.

a. Caution: Use solder with melting point below 840 deg F (454 deg C) for angle, check, gate, and globe valves; below 421 deg F (216 deg C) for ball valves.

9. Threaded: With threads according to ASME B1.20.1.

10. Valve Bypass and Drain Connections: MSS SP-45.

D. Ball Valves:

1. MSS SP-110, 600# W.O.G., forged bronze, three piece body, hard chrome plated forged brass ball, full port, true adjustable packing nut, (O-ring only type stem seal not acceptable) blow-out proof stem.

2. Acceptable end connections;

a. Threaded for NPS 4 and smaller.

b. Soldered for NPS 3 and smaller.

c. Flanged or grooved for NPS 4 and larger.

3. Basis of Design: Apollo 82 Series.

E. Gate Valves:

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1. MSS SP-80, Class 125, bronze body, bronze trim, rising stem, hand wheel, inside screw, solid wedge disc.

2. Acceptable end connections;

a. Soldered for NPS 3 and smaller.

F. Butterfly Valves:

1. MSS SP-67, CWP Rating, Cast or Ductile Iron Body, disc, (nickel-plated ductile iron, elastomer coated ductile iron, or aluminum bronze) resilient replaceable EPDM seat, 10 position handle, one or two piece stem.

2. Acceptable end connections;

a. Flanged or grooved for NPS 2-1/2 and larger.

G. Globe Valves:

1. MSS SP-80, Class 125, bronze body, bronze trim, bronze disc.

2. Acceptable end connections;

a. Soldered for NPS 3 and smaller.

H. Swing Check Valves:

1. Up to NPS 3: MSS SP-80, Class 125, bronze body and cap, bronze swing disc with rubber seat.

2. NPS 4 and larger: MSS SP-71, Class 125, iron body, bronze swing disc, renewable disc seal and seat.

3. Acceptable end connections;

a. Soldered for NPS 3 and smaller.

b. Flanged or grooved for NPS 4 and larger.

PART 3 - EXECUTION

3.1 EXCAVATION AND PREPARATION

A. Excavating, trenching, and backfilling are specified in Division 31 Section "Earthwork."

B. Prepare pipe bedding to receive buried piping.

1. Grade the bottom of the trench smooth. Provide a stable, rock free base.

2. Remove any unstable materials from the base of the trench. Provide sand or pea stone as required to grade the trench bottom.

3. Remove base materials at each piping joint to relieve undo stresses at the fittings and couplings.

3.2 PIPE AND FITTING APPLICATIONS

A. Underground and Building Slab, Water-Service Piping to 10-feet outside the building wall:

1. NPS ½ to NPS 2-1/2: Soft copper tube, Type K; no fittings or joints allowed.

2. NPS 4 to NPS 8: Cement-lined ductile iron pipe; mechanical or bell and spigot fittings;

mechanical or restrained push-on joints.

B. Water Supply Piping, Below Building Slab, (downstream of the meter):

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1. Soft copper tube, Type K; no fittings or joints allowed. Piping to be run within schedule

40 PVC piping. PVC piping to be sized and arranged to allow for the removal and replacement of the copper supply line(s).

C. Water Supply Piping, Aboveground:

1. Hard copper tube, Type L; copper pressure fittings; lead-free soldered joints.

a. Option for NPS 2-1/2 and larger: Hard copper tube, Type L with grooved ends;

copper grooved-end fittings and couplings; and grooved joints.

D. DWV Gravity Piping, Below Building Slab and to 10-feet outside the building wall:

1. Service weight cast iron soil pipe; hub and spigot fittings; gasket or lead and oakum joints.

E. DWV Gravity Piping, Aboveground:

1. Service weight cast iron soil pipe; hubless cast iron fittings; no-hub coupled joints.

2. Option: 2-inch and smaller drain and vent lines may be installed using Copper tube, Type DWV; copper drainage fittings, soldered joints.

3.3 VALVE APPLICATIONS

A. Drawings indicate valve types to be used. Where specific valve types are not indicated, the following requirements apply:

1. Shutoff Duty: Use ball or gate valves for piping NPS 2 (DN 50) and smaller. Use butterfly or gate valves for piping NPS 2-1/2 (DN 65) and larger.

2. Throttling Duty: Use ball or globe valves for piping NPS 2 (DN 50) and smaller. Use butterfly valves for piping NPS 2-1/2 (DN 65) and larger.

3. Directional Duty: Use swing check valves.

4. Drain Duty: Hose-end drain valves.

B. Cast-iron, grooved-end valves may be used with grooved-end piping.

C. Install shutoff valve close to water main on each branch and riser serving plumbing fixtures or equipment, on each water supply to equipment, and on each water supply to plumbing fixtures that do not have supply stops. Use ball or gate valves for piping NPS 2 (DN 50) and smaller.

Use butterfly or gate valves for piping NPS 2-1/2 (DN 65) and larger.

D. Install drain valves for equipment at base of each water riser, at low points in horizontal piping, and where required to drain water piping.

1. Install hose-end drain valves at low points in water mains, risers, and branches.

2. Install stop-and-waste drain valves where indicated.

3.4 PIPING INSTALLATION

A. Basic piping installation requirements are specified in Division 22 Section "Basic Plumbing

Materials and Methods."

B. Install under-building-slab copper tubing according to CDA's "Copper Tube Handbook."

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C. Install wall penetration system at each service pipe penetration through foundation wall where piping enters/exits a below grade basement space, (not required for slab-on-grad frost wall penetrations). Make installation watertight. Wall penetration systems are specified in

Division 22 Section "Basic Plumbing Materials and Methods."

D. Install domestic water piping level with 0.25 percent slope downward toward drain and plumb.

E. Rough-in domestic water piping for water-meter installation according to utility company's requirements.

F. Install cast-iron soil piping according to CISPI's "Cast Iron Soil Pipe and Fittings Handbook,"

Chapter IV, "Installation of Cast Iron Soil Pipe and Fittings."

G. Make changes in direction for DWV piping using appropriate branches, bends, and long-sweep bends. Sanitary tees and short-sweep 1/4 bends may be used on vertical stacks if change in direction of flow is from horizontal to vertical. Use long-turn, double Y-branch and 1/8-bend fittings if 2 fixtures are installed back to back or side by side with common drain pipe. Straight tees, elbows, and crosses may be used on vent lines. Do not change direction of flow more than

90 degrees. Use proper size of standard increasers and reducers if pipes of different sizes are connected. Reducing size of drainage piping in direction of flow is prohibited.

H. Lay buried building DWV piping beginning at low point of each system. Install true to grades and alignment indicated, with unbroken continuity of invert. Place hub ends of piping upstream. Install required gaskets according to manufacturer's written instructions for use of lubricants, cements, and other installation requirements. Maintain swab in piping and pull past each joint as completed.

I. Install DWV piping at the following minimum slopes, unless otherwise indicated:

1. Horizontal drainage piping, NPS 3-inch and smaller: ¼-inch per foot downward in direction of flow.

2. Horizontal drainage piping, NPS 4-inch and larger: 1/8-inch per foot downward in direction of flow.

a. Exception: Dedicated kitchen waste piping to be pitched at ¼-inch per foot downward in direction of flow.

3. Vent Piping: 1/8-inch per foot down toward vertical fixture vent or toward vent stack.

J. Do not enclose, cover, or put piping into operation until it is inspected and approved by authorities having jurisdiction.

3.5 JOINT CONSTRUCTION

A. Basic piping joint construction requirements are specified in Division 22 Section "Basic

Plumbing Materials and Methods."

B. Soldered Joints: Use ASTM B 813, water-flushable, lead-free flux; ASTM B 32, lead-free-alloy solder; and ASTM B 828 procedure, unless otherwise indicated.

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C. Grooved Joints: Assemble joints with grooved-end-pipe or grooved-end-tube coupling housing, gasket, lubricant, and bolts according to coupling and fitting manufacturer's written instructions.

D. Cast-Iron, Soil-Piping Joints: Make joints according to CISPI's "Cast Iron Soil Pipe and

Fittings Handbook," Chapter IV, "Installation of Cast Iron Soil Pipe and Fittings."

1. Gasketed Joints: Make with rubber gasket matching class of pipe and fittings.

2. Hubless Joints: Make with rubber gasket and sleeve or clamp.

3.6 HANGER AND SUPPORT INSTALLATION

A. Seismic-restraint devices are specified in Division 22 Section "Plumbing Vibration and Seismic

Controls."

B. Pipe hanger and support devices are specified in Division 22 Section "Hangers and Supports."

Install the following:

1. Vertical Piping: MSS Type 8 or Type 42, clamps.

2. Individual, Straight, Horizontal Piping Runs: According to the following:

a. 100 Feet (30 m) and Less: MSS Type 1, adjustable, steel clevis hangers.

b. Longer Than 100 Feet (30 m): MSS Type 43, adjustable roller hangers.

c. Longer Than 100 Feet (30 m): MSS Type 49, spring cushion rolls, if indicated.

3. Multiple, Straight, Horizontal Piping Runs 100 Feet (30 m) or Longer: MSS Type 44, pipe rolls. Support pipe rolls on trapeze.

4. Base of Vertical Piping: MSS Type 52, spring hangers.

C. Install supports according to Division 22 Section "Hangers and Supports."

D. Support vertical piping and tubing at base and at each floor.

E. Rod diameter may be reduced 1 size for double-rod hangers, to a minimum of 3/8 inch (10 mm).

F. Install hangers for steel piping with the following maximum horizontal spacing and minimum rod diameters:

1. NPS 1-1/4 (DN 32) and Smaller: 84 inches (2100 mm) with 3/8-inch (10-mm) rod.

2. NPS 1-1/2 (DN 40): 108 inches (2700 mm) with 3/8-inch (10-mm) rod.

3. NPS 2 (DN 50): 10 feet (3 m) with 3/8-inch (10-mm) rod.

4. NPS 2-1/2 (DN 65): 11 feet (3.4 m) with 1/2-inch (13-mm) rod.

5. NPS 3 and NPS 3-1/2 (DN 80 and DN 90): 12 feet (3.7 m) with 1/2-inch (13-mm) rod.

6. NPS 4 (DN 100): 12 feet (3.7 m) with 5/8-inch (16-mm) rod.

G. Install supports for vertical steel piping every 15 feet (4.5 m).

H. Install hangers for copper tubing with the following maximum horizontal spacing and minimum rod diameters:

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1. NPS 3/4 (DN 20) and Smaller: 60 inches (1500 mm) with 3/8-inch (10-mm) rod.

2. NPS 1 and NPS 1-1/4 (DN 25 and DN 32): 72 inches (1800 mm) with 3/8-inch (10-mm) rod.

3. NPS 1-1/2 and NPS 2 (DN 40 and DN 50): 96 inches (2400 mm) with 3/8-inch (10-mm) rod.

4. NPS 2-1/2 (DN 65): 108 inches (2700 mm) with 1/2-inch (13-mm) rod.

5. NPS 3 to NPS 5 (DN 80 to DN 125): 10 feet (3 m) with 1/2-inch (13-mm) rod.

I. Install supports for vertical copper tubing every 10 feet (3 m).

J. Install hangers for cast-iron soil piping with the following maximum horizontal spacing and minimum rod diameters:

1. NPS 1-1/2 and NPS 2 (DN 40 and DN 50): 60 inches (1500 mm) with 3/8-inch (10-mm) rod.

2. Spacing for 10-foot (3-m) lengths may be increased to 10 feet (3 m). Spacing for fittings is limited to 60 inches (1500 mm).

K. Install supports for vertical cast-iron soil piping every 15 feet (4.5 m).

L. Support piping and tubing not listed above according to MSS SP-69 and manufacturer's written instructions.

3.7 CONNECTIONS

A. Drawings indicate general arrangement of piping, fittings, and specialties.

B. Install piping adjacent to equipment and machines to allow service and maintenance.

C. Connect domestic water piping to exterior water-service piping. Use transition fitting to join dissimilar piping materials.

D. Connect domestic water piping to provision made by the Fire Protection Contractor on the combined fire/domestic service entrance. Coordinated exact configuration requirements with the Fire Protection Contractor.

E. Connect domestic water piping to the following:

1. Plumbing Fixtures: Cold- and hot-water supply piping in sizes indicated, but not smaller than required by plumbing code. Refer to Division 22 Section "Plumbing Fixtures."

2. Equipment: Cold- and hot-water supply piping as indicated, but not smaller than equipment connections. Provide shutoff valve and union for each connection. Use flanges instead of unions for NPS 2-1/2 (DN 65) and larger.

F. Connect DWV piping to exterior sanitary and storm piping. Use transition fitting to join dissimilar piping materials.

G. Connect drainage and vent piping to the following:

1. Plumbing Fixtures: Connect drainage piping in sizes indicated, but not smaller than required by plumbing code. Refer to Division 22 Section "Plumbing Fixtures."

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2. Plumbing Fixtures and Equipment: Connect atmospheric vent piping in sizes indicated, but not smaller than required by authorities having jurisdiction.

3. Plumbing Specialties: Connect drainage and vent piping in sizes indicated, but not smaller than required by plumbing code. Refer to Division 22 Section "Plumbing

Specialties."

4. Equipment: Connect drainage piping as indicated. Provide shutoff valve, if indicated, and union for each connection. Use flanges instead of unions for connections NPS 2-1/2

(DN 65) and larger.

H. Connect interior storm drainage piping to exterior storm drainage piping. Use transition fitting to join dissimilar piping materials.

I. Connect storm drainage piping to roof drains and storm drainage specialties.

3.8 FIELD QUALITY CONTROL

A. Inspect domestic water piping as follows:

1. Do not enclose, cover, or put piping into operation until it has been inspected and approved by authorities having jurisdiction.

2. During installation, notify authorities having jurisdiction at least 24 hours before inspection must be made. Perform tests specified below in presence of authorities having jurisdiction:

a. Roughing-in Inspection: Arrange for inspection of piping before concealing or closing-in after roughing-in and before setting fixtures.

b. Final Inspection: Arrange final inspection for authorities having jurisdiction to observe tests specified below and to ensure compliance with requirements.

3. Reinspection: If authorities having jurisdiction find that piping will not pass test or inspection, make required corrections and arrange for reinspection.

4. Reports: Prepare inspection reports and have them signed by authorities having jurisdiction.

B. Test domestic water piping as follows:

1. Fill domestic water piping. Check components to determine that they are not air bound and that piping is full of water.

2. Test for leaks and defects in new piping and parts of existing piping that have been altered, extended, or repaired. If testing is performed in segments, submit separate report for each test, complete with diagram of portion of piping tested.

3. Leave new, altered, extended, or replaced domestic water piping uncovered and unconcealed until it has been tested and approved. Expose work that was covered or concealed before it was tested.

4. Cap and subject piping to static water pressure of 50 psig (345 kPa) above operating pressure, without exceeding pressure rating of piping system materials. Isolate test source and allow to stand for four hours. Leaks and loss in test pressure constitute defects that must be repaired.

5. Repair leaks and defects with new materials and retest piping or portion thereof until satisfactory results are obtained.

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6. Prepare reports for tests and required corrective action.

C. Inspect DWV piping as follows:

1. During installation, notify authorities having jurisdiction at least 24 hours before inspection must be made. Perform tests specified below in presence of authorities having jurisdiction.

a. Roughing-in Inspection: Arrange for inspection of piping before concealing or closing-in after roughing-in and before setting fixtures.

b. Final Inspection: Arrange for final inspection by authorities having jurisdiction to observe tests specified below and to ensure compliance with requirements.

2. Reinspection: If authorities having jurisdiction find that piping will not pass test or inspection, make required corrections and arrange for reinspection.

3. Reports: Prepare inspection reports and have them signed by authorities having jurisdiction.

D. Test DWV piping according to procedures of authorities having jurisdiction or, in absence of published procedures, as follows:

1. Test for leaks and defects in new piping and parts of existing piping that have been altered, extended, or repaired. If testing is performed in segments, submit separate report for each test, complete with diagram of portion of piping tested.

2. Leave uncovered and unconcealed new, altered, extended, or replaced drainage and vent piping until it has been tested and approved. Expose work that was covered or concealed before it was tested.

3. Roughing-in Plumbing Test Procedure: Test drainage and vent piping, except outside leaders, on completion of roughing-in. Close openings in piping system and fill with water to point of overflow, but not less than 10-foot head of water (30 kPa). From 15 minutes before inspection starts to completion of inspection, water level must not drop.

Inspect joints for leaks.

4. Finished Plumbing Test Procedure: After plumbing fixtures have been set and traps filled with water, test connections and prove they are gastight and watertight. Plug vent-stack openings on roof and building drains where they leave building. Introduce air into piping system equal to pressure of 1-inch wg (250 Pa). Use U-tube or manometer inserted in trap of water closet to measure this pressure. Air pressure must remain constant without introducing additional air throughout period of inspection. Inspect plumbing fixture connections for gas and water leaks.

5. Repair leaks and defects with new materials and retest piping, or portion thereof, until satisfactory results are obtained.

6. Prepare reports for tests and required corrective action.

3.9 ADJUSTING

A. Perform the following adjustments before operation:

1. Close drain valves, hydrants, and hose bibbs.

2. Open shutoff valves to fully open position.

3. Open throttling valves to proper setting.

4. Remove plugs used during testing of piping and plugs used for temporary sealing of piping during installation.

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5. Remove and clean strainer screens. Close drain valves and replace drain plugs.

6. Remove filter cartridges from housings and verify that cartridges are as specified for application where used and are clean and ready for use.

7. Check plumbing specialties and verify proper settings, adjustments, and operation.

3.10 CLEANING

A. General: Clean interior of domestic water piping system. Remove dirt and debris as work progresses.

B. Clean and disinfect potable and non-potable domestic water piping as follows:

1. Purge new piping and parts of existing domestic water piping that have been altered, extended, or repaired before using.

2. Use purging and disinfecting procedures prescribed by authorities having jurisdiction or, if methods are not prescribed, procedures described in either AWWA C651 or

AWWA C652 or as described below:

a. Flush piping system with clean, potable water until dirty water does not appear at outlets.

b. Fill and isolate system according to either of the following:

1) Fill system or part thereof with water/chlorine solution with at least 50 ppm

(50 mg/L) of chlorine. Isolate with valves and allow to stand for 24 hours.

2) Fill system or part thereof with water/chlorine solution with at least 200 ppm (200 mg/L) of chlorine. Isolate and allow to stand for three hours.

c. Flush system with clean, potable water until no chlorine is in water coming from system after the standing time.

d. Submit water samples in sterile bottles to authorities having jurisdiction. Repeat procedures if biological examination shows contamination.

3. Prepare and submit reports of purging and disinfecting activities.

C. Protect drains during remainder of construction period to avoid clogging with dirt and debris and to prevent damage from traffic and construction work.

D. Place plugs in ends of uncompleted piping at end of day and when work stops.

END OF SECTION 221116