02668 spec - fire hydrant

KFU in Ahsa J06-09600

02668-1 Water Distribution System

SECTION 02668

POTABLE, RAW AND FIRE WATER DISTRIBUTION SYSTEM PART 1 - GENERAL 1.1 SECTION INCLUDES

A. Domestic potable, raw and fire water distribution system from outside buildings and up to interface point(s) with main line(s) as shown on Drawings.

B. Water distribution system shall include the following:

1. Pipes and pipe fittings. 2. Valves. 3. Piping Specialties. 4. Water Meter. 5. Fire Hydrant. 6. Miscellaneous materials related to the water distribution system.

C. Pumps related to the water distribution system shall be specified in Section 15453 -

PUMPS. 1.2 REFERENCES

A. SASO - Saudi Arabian Standards Organization:

SASO 14 Pipes for Potable Water of Unplasticized Plastic (UPVC) SASO 15 Method of Testing of Pipes for Potable Water of Unplasticized

Plastic (UPVC) SASO 237 Testing and calibration of domestic water meters SASO 238 Domestic water meters SASO 1178 Unplasticized polyvinyl chloride (UPVC) pipes - for potable

water-supply-Extractability of lead and tin test method. Method and specification

B. ASTM - American Society for Testing and Materials:

ASTM A 126 Standard Specification for Gray Iron Castings for Valves,

Flanges, and Pipe Fittings ASTM A 193 Specification for Alloy-Steel and stainless Steel Bolting

Materials for High- Temperature Service ASTM A 194 Specification for Carbon and Alloy-Steel Nuts for Bolts for

High-pressure and High- Temperature Service ASTM B 62 Standard Specification for Composition Bronze or Ounce

Metal Castings



ASTM B 584 Specification for Copper Alloy Sand Castings for General

Applications ASTM D 1784 Rigid Poly (Vinyl Chloride) (PVC) Compounds and

Chlorinated Poly (Vinyl Chloride) (CPVC) Plastic Hot- and Cold-Water Compounds.

ASTM D 1785 Specifications for Poly (Vinyl Chloride) (PVC) Plastic Pipe,

Schedules 40, 80, and 120 ASTM D 2467 Socket-Type (Vinyl Chloride) (PVC) Plastic Pipes Fittings,

Schedule 80 ASTM D 2564 Specifications for Solvents Cements for Poly (Vinyl Chloride)

(PVC) Plastic Pipe and Fittings

ASTM D 2672 Joints for IPS PVC Pipe Using Solvent Cement ASTM D 2855 Making Solvent-Cemented Joints with Poly (Vinyl Chloride)

(PVC) Pipes and Fittings ASTM D 2992 Practice for Obtaining Hydrostatic or Pressure Design Basis

for “Fiberglass” (Glass-Fiber-Reinforced Thermosetting-Resin) Pipe and Fittings

ASTM D 2996 Filament-wound “Fiberglass” (Glass-Fiber-Reinforced

Thermosetting-Resin Pipe ASTM D 3517 Specification for “Fiberglass” (Glass-Fiber-Reinforced

Thermosetting-Resin Pipe) Pressure pipes ASTM D 3139 Joints for Plastic Pressure Pipes Using Flexible Elastomeric

Seals ASTM F 436 Hardened Steel Washers ASTM F 656 Primers for Use in Solvent-Cement Joints of Poly (Vinyl

Chloride) (PVC) Pipes and Fittings

C. ANSI - American National Standard Institute

ANSI B16.5 Steel Pipe Flanges and Flanged Fittings

D. MSS - Manufacturers Standardization Society

MSS SP-70 Cast-Iron Gate Valves, Flanged and Threaded Ends MSS SP-71 Cast-Iron Swing Check Valves, Flanged and Threaded Ends MSS SP-80 Bronze Gate, Globe, Angle and Check Valves



E. WWA - American Water Works Association:

AWWA C651 Standard for Disinfecting of Water Mains AWWA C700 Standard for Cold-Water Meters - Displacement Type AWWA C950 Standard for Fiberglass Pressure Pipes AWWA M23 PVC Pipe Design and Installation AWWA M45 Fiberglass pipe Design

1.3 SUBMITTALS

A. Product and Maintenance Data: Submit manufacturer's product and maintenance data for the items specified herein.

B. Coordination Drawings: Prepare and submit coordination drawings for water

distribution piping. 1.4 WARRANTY

A. Provide a written Guarantee covering the satisfactory operation of plumbing installations for a period of one year from the date of acceptance. During this period, repair providing new materials to replace defective work at no extra cost to the Owner.

1.5 STORAGE, HANDLING AND TRANSPORTATION

A. Storage, handling and transportation of pipes, fittings and adhesive shall be in strict accordance with the manufacturer's written instructions and recommendations.

B. Do not remove valves/meters end protectors unless necessary for inspection; then

re-install for storage. Protect valves/meters from weather. Store valves/meters indoors. If outdoor storage is necessary, support valves/meters off the ground or pavement in watertight enclosures.

C. Rig valves/meters to avoid damage to exposed valve parts. Do not use hand wheels and stems as lifting or rigging points.

1.6 QUALITY ASSURANCE

A. Comply with the applicable requirements of the Uniform Plumbing Code (UPC) as well as the Standards of ANSI and ASME referred to in this Section.

B. Single Source Manufacturer: Provide pipes, fittings and flanges for a particular

installation from a single source to avoid incompatibility due to intermixing of products.

C. Qualifications of Installer: Installer shall be recommended by the piping manufacturer.

Installer shall be subject to the Engineer approval.



PART 2 - PRODUCTS 2.1 PIPES AND PIPE FITTINGS FOR POTABLE, RAW AND FIRE WATER

A. RTR (Reinforced-Thermosetting-Resin) Pipes:

1. Construction: High strength fiberglass filaments and corrosion-resistant aromatic-amine-cured resin integrated into one unitized piping component by a precision-numerically-controlled filament winding process. A black pigment shall be added to the epoxy resin system to ensure ultra-violet resistance for the above ground services. Pipes and pipe fittings shall be rated in accordance with AWWA C950, ASTM D 3517 and ASTM D 2992 and conforming to ASTM D 2996 for machine-made pipes. Pressure Pipes for potable and raw water shall be PN 16 and for fire water it shall be PN 20.

2. Liner: Reinforced corrosion-resistant resin-rich, epoxy liner, 0.5 mm thick.

B. RTR Fittings: Filament-wound RTR fittings using same material and liner as pipes.

Provide Manufacturer's standard fittings as required and as indicated on Drawings including tees, elbows, reducers, laterals and adaptors.

C. Jointing System:

1. For Pipes and Pipe Fittings:

a. Provide adhesive-bonded joints with taper by taper bell and spigot ends

for pipes and pipe fittings unless otherwise indicated on Drawings. b. Adhesive: Epoxy-base thermosetting adhesive, type as recommended by

the RTR pipe Manufacturer.

2. For Valves and Branch Lines:

a. Provide flanged joints for valves and branch lines as indicated on Drawings.

b. Flanges Construction: RTR filament wound, or compression moulded

flanges.

c. Flange Face: Flat-face type d. Flange Dimensions and Drilling: In accordance with ANSI B16.5 for 150

psi rating. e. Gasket for Flanges: Full-face type gasket composed of natural rubber or

neoprene or any approved material with a minimum Shore-A durometer of 40. Thickness and type of gasket shall be as recommended by the manufacturer for the design temperature and pressure.

f. Bolts, Nuts and Washers:

Bolts: Alloy stud bolts in conformance with ASTM A 193, Grade B7



Nuts: Semi-finished heavy pattern hex nuts conforming to ASTM A 194, Grade 2H.

Washers: Conform to ASTM F 436.

2.2 PIPES AND PIPE FITTINGS FOR PUMP ROOMS

A. Exposed piping inside pump room shall be Hot-dipped Galvanized Steel Pipe

conforming to ASTM A 53, Type E, Grade A or B, Schedule 40, roll grooved ends.

B. Pipe fittings conforming to the same requirements mentioned for the pipes.

2.3 VALVES

A. Refer to Section 15100 - VALVES: 2.4 FIRE HYDRANT

A. Shall be of cast iron construction UL Listed, FM approved, complying with AWWA

C502, 6-inch wet barrel, traffic type. Hydrants shall have two 2-1/2 inch hose nozzles and one having 4-1/2 inch bumper nozzle. Nozzles shall be American National Standard Fire Hose Coupling Screw Thread in accordance with NFPA 1963, and conforming to the requirements of local Fire Department. Each inlet shall have a plug and chain. Units shall be finished in UV resistant red polyester coating, with words both in English and Arabic "FIRE HYDRANT" in raised letters for above ground and epoxy coating for underground portion. Provide isolation valves between hydrant and water mains.

2.5 WATER METER

A. General: Water meter design shall be in accordance with the regulations of the Utility Company as well as the requirements of AWWA C700.

B. Type: Turbine flow water meter. C. Measurement Unit: Cubic meter.

D. Environmental Conditions: Outdoor type, suitable for operating under the following

conditions:

1. Relative Humidity:

- Minimum 0 percent. - Maximum 100 percent (condensing).

2. Temperature:

- Minimum 0 degrees C. - Maximum 70 degrees C, exposed to direct sun radiation with no internal

heat source.

E. Water Meter Construction: Cast iron body shielded from magnetic fields with flanged ends rated class 150 in accordance with ANSI B16.5. Rotary vane and measuring



mechanism shall be plastic. External body shall be provided with the Manufacturer's standard high-quality corrosion proof coating.

2.6 STRAINERS

A. Shall be constructed of high tensile ASTM A126, Class B cast iron with blow-off connections and self-aligning cylindrical screens. Strainer shall be suitable for horizontal and vertical installation. Below-off outlets are tapped FIPT. Stainless steel screens shall be of standard sizes with perforations as approved. Strainers shall be with flanged ends, epoxy coated, sizes as shown on drawings, pressure rating similar to piping on site.

2.7 WATER TANK:

A. Above ground tank shall be bolted type glass lined/coated steel tanks. The inert glass shall be chemically bonded to the steel sheet by spraying the grit blasted with specially prepared slip and then drying it prior to firing it in a furnace at a temperature of up to 90 degree C. The molten glass fuses with the surface of the steel giving permanent high bond strength. Rubber gaskets shall be used at bolted connections. Material, design, fabrication, and erection of bolted steel tanks shall conform to ANSI/AWWA D103 or equivalent Standards. Steel sheets shall conform to ASTM A 570, Grade 33. Galvanized steel bolts shall conform to ASTM A 307. All coatings shall be factory applied. Field coating, except for touch-up will not be acceptable. Size and shape of tanks shall be as shown on drawings. Tanks shall be with reinforced concrete foundation designed by the Contractor and approved by the Engineer. Reinforced concrete shall comply with the requirements of Division 3 - CONCRETE. Concrete shall be of minimum 30 MPa compressive strength at 28 days. Waterproofing concrete foundation shall comply with the requirements of Division 7 - THERMAL AND MOISTURE PROTECTION.

2.8 LEVEL ALARM FOR WATER TANKS

A. Mechanical tilt non-mercury float level switch shall be suitable for level control and alarm applications for water tanks. Float level switch shall be complete with impact resistant ABS shell and neoprene jacketed sealed cable of required length. Contacts shall be SPST, Normal Open or Normally Closed common with N.O & N.C. Power rating shall be as required. Float level switch shall be installed as per manufacturer’s written instructions.

2.9 MISCELLANEOUS MATERIALS

A. Marker Tape: Detectable metallic core polyethylene tape color-coded, 150 mm wide, 100 microns thick, and labeled in Arabic and English alternately for the appropriate service.

B. Water Meter, Valves and Tie-In Points Chambers:

1. Construction: Cast-in-place reinforced concrete; conforming to Section 03300 -

CAST-IN-PLACE CONCRETE; Class 30 with Type 1 Portland cement modified with microsilica. Interior surfaces shall be coated with 2 coats (650 micron thick) coal tar epoxy. Exterior surfaces shall have single layer, fully bonded, 4 mm thick waterproofing membrane or approved equal and 3 mm thick protection board, complying with Section 07100 - WATERPROOFING.



2. Size: As indicated on Drawings. 3. Chamber Cover/Frame: Conform to the requirements specified in Section

05500 - METAL FABRICATIONS.

PART 3 - EXECUTION 3.1. EXAMINATION

A. Pipes and Pipe Fittings:

1. Examine visually pipes and pipe fittings for scratches, damages, cracks, delaminations, crushing and weathering. Damaged pipes and pipe fittings shall not be installed.

2. Clean pipes and pipe fittings prior to installation. 3. Discard adhesives and other piping materials that are beyond their stamped

expiry dates as well as leaking and opened containers.

B. Valves:

1. Examine valve interior through the end ports for cleanliness, freedom from foreign matter, and corrosion. Remove special packing materials used to prevent disc movement during shipping and handling.

2. Actuate valves through an open-close and close-open cycle. Examine

significant features as guides and seats made accessible by such actuation. 3. Examine mating flange faces for conditions that might cause leakage. Check

bolting for proper size, length, and material. Check gasket material for proper size, material composition suitable for service, and freedom from defects and damage.

4. Replace defective valves with new valves.

3.2. RELATED WORKS

A. Trenching and bedding for underground piping shall conform to Section 02225 - TRENCHING AND BACKFILLING.

B. Dewatering: Dewatering, where required, shall conform to the requirements of

Section 02200 - EARTHWORK.

C. Pipelines Crossings under Roads: Conform to the requirements of Section 02225 - TRENCHING AND BACKFILLING.

3.3. INSTALLATION OF PIPING SYSTEM

A. Installation - General:



1. Install pipes, fittings, and valves in accordance with the requirements of AWWA

M23. 2. Inspect pipes, fittings and valves for soundness and for imperfections of

coatings, wrappings and linings prior to installation. 3. Deflection at joints shall not exceed the maximum deflection recommended by

the pipe or coupling manufacturer for each type of joint and each size of pipes. 4. Blocking shall be permitted only where indicated. 5. Install temporary piping, valves, meters, gauges, and equipment required for

hydrostatic testing and disinfection in accordance with detailed approved working drawings.

B. RTR Pipes and Pipe Fittings:

1. Assembly of RTR Piping Systems

a. Assemble adhesive-bonded and gasketed joints in strict accordance with

RTR pipe Manufacturer's recommendations. b. Use heating blankets to cure bonded joints. c. Assemble RTR flanges with full face elastomeric gaskets, 3 mm thick,

and 50 to 60 Shore A Durometer hardness.

2. Connections between Dissimilar Materials: Provide flanged joints between dissimilar materials.

3. Laying RTR Piping in Trenches:

a. Adhesive bonded and gasketed joint piping of 250 mm and less may be

assembled next to or in the trench. b. For trenches 2 m deep or less, RTR piping assembled next to trench shall

not be moved within three pipe lengths of an uncured joint. Lower the assembled pipeline into the trench progressively to avoid excessive joint angular deflection.

c. For trenches deeper than 2 m, assemble pipes in the trench.

C. Anchorages and Buttresses:

1. Construct concrete anchorages and buttresses where indicated. 2. Harness valves and fittings that are not provided with an anchor, buttress or

restrained joint using steel rods and rod socket pipe clamps or by steel rods and rod connectors connected to mechanical joint bolts as indicated.

3.4. VALVE INSTALLATION



A. Locate valves for easy access and provide separate supports where necessary. Install valves in a position allowing full stem movement.

B. Install valves using flanged connections. Align flange surfaces parallel. Assemble

joints in accordance with the valve manufacturer's recommendations for gasketing and bolting.

3.5. FIELD QUALITY CONTROL

A. Hydrostatic Testing:

1. Underground piping to be tested shall be partially backfilled with joints exposed

during test unless otherwise directed by the Engineer. 2. Protect exposed joints from direct sunlight during testing. Perform hydrostatic

testing so that temperature of the test water shall not exceed 40 degree C during the test period.

3. Provide temporary thrust resistance using wooden supports at changes of direction prior to hydrostatic testing of assembled piping.

4. No adhesive-bonded piping shall be pressurized until joints have cured in

accordance with the Manufacturer's instructions. 5. Conduct Hydrostatic tests in presence of the Engineer, and prior to coating

joints and disinfecting. Conduct hydrostatic tests after the associated concrete works has set for a minimum of 7 days for standard concrete.

6. Place test pump on firm ground away from piping. Pump shall have a calibrated and tagged relief valve set at 10 percent above the test pressure or a maximum of 170 kPa above test pressure for pressure piping systems.

7. Use a calibrated and tagged pressure gauge of the proper range for testing

pressure piping systems. 8. Perform hydrostatic test using fresh water. Fill pipeline 24 hours prior to testing. 9. Pressure test for the water distribution mains shall be 1035 kPa or 345 kPa

above the operating pressure, whichever is greater.

a. Test lines whose joints have been backfilled at the above mentioned pressure test for 24 hours.

b. Test lines whose joints have not been backfilled at the above mentioned

pressure test for 4 hours.

B. Inspection:

1. Hydrostatic test diagrams and test procedures shall be prepared and made available for inspection prior to conducting the test. The test diagrams and procedures shall include limits of piping and equipment included in each hydrostatic test, test pressure, test temperature, test flow, line flushing requirements and safety precautions.



2. Examine exposed pipes, joints, fittings, valves, and hydrants for leakage during hydrostatic testing.

3. For piping, replace leaking pipe, joints and fittings in accordance with the

requirements specified herein. 4. Repeat hydrostatic testing after the repair of defects until the system is proved

satisfactory. 5. Piping shall be satisfactory if there is no evidence of leakage or pressure loss

after the specified test period.

C. Repair Methods:

1. Conform to the requirements specified herein for the provision of new materials required for replacement at the defected areas.

2. Conform to the manufacturer's recommendations for permanent and temporary

repairs of piping. 3.6. PREPARATION FOR USE

A. After completion of hydrostatic tests, drain lines in an approved manner.

B. Remove temporary test piping and equipment that will no longer be required.

C. Field Coating: After completion of hydrostatic tests and before disinfecting, prime or

re-prime as required and provide a protective coating to uncoated metal components of piping system, including joints, tie rods and harnesses as specified herein, except exposed ends of steel pipes up to couplings shall be wrapped with hot applied coal tar tape.

3.7. BACKFILL

A. Trench backfilling shall conform to the requirements of Section 02225 - TRENCHING

AND BACKFILLING.

B. Marker Tape: Install continuous, marker tape during backfilling of trench for underground services. Locate tape 300 mm below finished grade.

3.8. PREPARATION FOR USE

A. General: Disinfection: Disinfect drinking water lines in accordance with AWWA C651

before placing the lines in service.

B. Disinfection:

1. Flush the entire water system thoroughly and disinfect with chlorine before placing the system in operation according to the procedures prescribed by the authority having jurisdiction and/or described in the AWWA C651 or as described below:

a. Fill the system or part thereof with a solution of water/chlorine containing



at least 50 parts per million of chlorine. b. Isolate (valve off) the system or part thereof and allow to stand for 24

hours. c. Drain the system or part thereof of previous solution. Refill with a

water/chlorine solution containing at least 200 parts per million of chlorine. d. Isolate the system or part thereof and allow to stand for 3 hours. e. Following the allowed standing time, flush the system with clean, potable

water until chlorine does not remain in the water coming from the system. f. Submit water samples in sterile bottles to the authority having jurisdiction. g. Repeat the procedure if the biological examination made by the authority

shows evidence of contamination. h. Remove disinfection equipment and temporary piping after approval of

the disinfection tests. i. Submit reports of cleaning and disinfecting activities.

3.9. OPERATING TESTS

A. Operating Tests: Following approval of disinfection, conduct operating tests in the presence of the Engineer to verify that each valve is in proper working condition.

END OF SECTION

02668 spec - fire hydrant

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