SECTION PLUMBING PIPING SYSTEM

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1 SECTION PLUMBING PIPING SYSTEM PART 1 - GENERAL 1.01 RELATED DOCUMENTS A. Basic Requirements: Provisions of Section 15010, BASIC MECHANICAL REQUIREMENTS, are a part of this Section SUMMARY A. General: Provide domestic water piping, drainage waste and vent piping, and other plumbing piping and appurtenances as indicated ADDITIONAL REQUIREMENTS A. Related Sections: Other Sections of Division 15 which relate to the requirements of this Section may include but are not limited to the following: 1.04 SUBMITTALS , BASIC MECHANICAL MATERIALS AND METHODS , VALVES , PIPING SPECIALTIES , THERMAL INSULATION , PLUMBING FIXTURES , PLUMBING EQUIPMENT , FUEL PIPING SYSTEM A. General: Refer to paragraph entitled "SUBMITTAL" in Section Provide shop drawing and/or manufacturer's data sheet for the following items: 1. Manufacturers Literature: a. Product data for non-recirculating hot water system b. Dimensional outline drawing of domestic water return circulator including motor horsepower, voltage and phase. c. Complete list of all piping materials to be used in this section including valves, pipe schedules, pipe sizes and method of connection for each piping system. 2. Installation Instructions: PLUMBING PIPING SYSTEM

2 1.05 APPLICABLE STANDARDS A. General: All equipment, material, accessories, methods of construction and reinforcement, finish quality, workmanship and installation shall be in compliance with the paragraph entitled "Code Compliance" in Section PART 2 - PRODUCTS 2.01 GENERAL A. Application: The plumbing piping system shall only be of the materials indicated. Refer to Section 15060, PIPE AND FITTINGS, and Section 15250, THERMAL INSULATION, for material specifications. Insulation shall comply with ASTM E-84 requirements with a flame spread rating not exceeding 25 and with a smoke developed/fuel contributed rating not exceeding 50. B. Valves: All valves used in the plumbing piping shall be 125 psi SWP, 200 psi WOG as specified in Section 15100, VALVES. C. Manufacturer: Refer to paragraph entitled "MANUFACTURERS" in Section DOMESTIC WATER PIPE A. Above Ground: 1. Piping 4 inches and smaller shall be copper tube, Type L hard drawn. 2. Exposed piping in finished areas shall be chrome-plated brass pipe or chrome-plated brass tubing. B. Underground: C. Fitting: 1. Type K soft drawn copper tubing without joints shall be used up to 4 inch diameter. 1. Threaded: Threaded fittings for galvanized pipe shall be galvanized. Rigid mechanical joint piping connections will be allowed for all above ground piping of galvanized steel. 2. Copper Piping: Fittings on copper piping 2-1/2 inch and smaller shall be solder-type. Fittings for piping 3 inches and larger shall be brazed fittings and shall be brazed or silver-soldered. PLUMBING PIPING SYSTEM

3 3. Mechanical Joint: Rigid mechanical joint piping connections will be allowed for all above ground copper pipe. 4. T-Drill: The T-drill extruded fitting method may be used in conjunction with silver solder for Type L copper pipe SANITARY WASTE AND ALL VENT PIPING A. Above and Below Ground: 1. PVC Type DWV, solid core with solvent cement joints. 2. Brass pipe or tube, chrome plated, where exposed in finished areas. B. Below Ground: 1. Cast iron soil pipe, service weight, with bell and spigot joints KITCHEN WASTE PIPING A. Above and Below Ground: 1. Cast iron soil pipe, service weight, with bell and spigot joints.pvc 2. Brass pipe or tube, chrome plated, where exposed in finished areas CONDENSATE DRAIN PIPING A. General: Unless otherwise specifically noted condensate drain piping shall be the same as sanitary waste and vent piping STORM WATER PIPING A. Above and Below Ground: 1. PVC Type DWV, solid core with solvent cement joints THERMAL INSULATION A. General: All insulation, jackets and adhesives used shall comply with the requirements of ASTM E-84 with a maximum flame spread rating of 25 and a maximum smoke developed/fuel contributed rating of 50. Insulation on piping exposed in boiler rooms, mechanical equipment rooms, air handling equipment rooms, etc. or exposed on the exterior of the building shall be cellular glass. Insulation for concealed piping shall be preformed pipe insulation as follows: 1. Domestic Hot Water: PLUMBING PIPING SYSTEM

4 a. Fiberglass 2. Condensate Drain: a. Elastomeric 3. Storm Water: a. Fiberglass B. Thickness: The insulation thickness in inches shall be in accordance with the following table: TABLE - PIPING INSULATION THICKNESS Pipe Size, Inches Up to 1 1-1/4 to 2 2-1/2 to 4 5 to 6 8 & Up Cold Water 3/4 3/ Hot Water /2 1-1/2 1-1/2 Condensate Drain 1/2 1/2 ½ 1/2 1/2 Storm Water 1/2 1/2 ½ 1/2 1/2* * (Or manufacturer's minimum thickness based on the pipe size.) C. Exposed: For piping, other than domestic cold water, exposed to the outdoor air or in an unconditioned crawl space or cellar area, increase insulation thickness by 1/2 inch. D. Underground: Piping underground which is indicated to be insulated shall have cellular glass insulation VALVES A. General: Refer to the requirements of Section 15100, VALVES, for the complete requirements of all valves indicated in this section. B. 2 inch and smaller: Valves 2 inch and smaller shall be full port ball valves with bronze body and bronze trim, threaded or soldered connections. C. 2-1/2 inch and larger, above ground: Valves 2-1/2 inch and larger shall be O.S.& Y. valves with flanged, welded or mechanical joint connections, cast iron body with bronze trim. PLUMBING PIPING SYSTEM

5 PART 3 - EXECUTION 3.01 GENERAL A. Location of Vents: Vents shall be offset as required to penetrate roofs at least 3 feet from the edges of the building, and 10 feet from any supply air intake or operable window or door. B. Slope: Unless otherwise indicated, horizontal sanitary and storm piping 2-1/2 inches and smaller shall be sloped at a minimum of 1/4 inch per linear foot; piping 3 inches and larger shall be sloped a minimum of 1/8 inch per foot. C. Vent Piping: Horizontal vent branches shall be kept above the highest fixture served by the vent branch in order to prevent the vent from being used as a waste line. Horizontal vent branches shall be sloped upward to prevent accumulating water or trapping. D. Vent Connections: Vent piping connected to a horizontal pipe shall be taken from the centerline of the pipe. Vent piping shall rise at an angle not exceeding 45 degrees from vertical, to a point at least 6 inches above the flood rim of the highest attached fixture. E. Vent Flashing: All vents extending through the roof and not otherwise indicated to have roof penetration seals or pitch pockets shall be flashed. Provide lead flashing with a minimum five pound per square foot density. Crimp the edge and flatten the flashing to maintain the maximum clear area of the pipe. Extend vents and piping through roof a minimum 8 inches above the finished roof surface unless otherwise indicated. F. Cooling Tower Make-up: Cooling tower make-up water isolation valve shall terminate a minimum of 3 inches above the overflow level of the tower sump. G. Domestic Water Service: Provide a reduced pressure backflow preventer in the domestic water service to the building. The installation of the backflow preventer shall comply with local utility and plumbing code requirements. Refer to paragraph entitled "BACKFLOW PREVENTER" in Section INSULATION A. Horizontal Storm Water: Insulation shall begin at the base of the roof drain and include all horizontal piping and elbows at change of directions from the horizontal to the vertical. B. Condensate Piping: Insulate condensate piping and waste lines from ice machines with a minimum of 1/2 inch thickness elastomeric insulation. PLUMBING PIPING SYSTEM

6 3.03 TESTING A. Sanitary Piping: 1. Water Test: A water test shall be applied to the sanitary and storm drainage systems. If applied to the entire system, all openings in the piping shall be tightly closed, except the highest opening, and the system filled with water to point of overflow. If the system is tested in sections, each opening shall be tightly plugged except the highest opening of the section under test, and each section shall be filled with water. In testing successive sections at least the upper 10 feet of the next preceding section shall be tested, so that no joint or pipe (except the uppermost 10 feet of the system) shall be submitted to a test of less than a 10 foot head of water. The water test shall last for at least 30 minutes. The system shall not experience a drop in water level; if a loss of water is noticed, the system shall be repaired and the test resumed until all sections of the piping are watertight. 2. Pneumatic Air Test: An air test may be made by attaching an air compressor or testing apparatus to any opening and, after closing all other inlets and outlets to the system, forcing air into the system until there is a uniform gauge pressure of 5 psi. This pressure shall be held without introduction of additional air for a period of at least 30 minutes. If the test pressure drops, indicating a leak, the piping shall be repaired and the test resumed until all sections of the piping are air tight. B. Storm Water Piping: Sanitary piping test shall be used for storm water piping. C. Condensate Drain Piping: Sanitary piping test shall be used for condensate drain piping. D. Domestic Water Piping: Pressure testing and sterilization shall be performed as described in Section 15060, PIPE AND FITTINGS. END OF SECTION PLUMBING PIPING SYSTEM