DIVISION 1 - GENERAL REQUIREMENTS - IDEAS-EC

I. Install swing joints or expansion loops to allow for pipe expansion. Securely anchor pipes soexpansion can occur at these joints.J. Make joints between dissimilar piping by dielectric unions or flanges.K. Use reducing fittings wherever a change in pipe size occurs. The use of bushings will not bepermitted.L. Provide piping with unions to permit alterations and repairs.3 .2 VALVESA. Where soldered end connections are used, use solder having a melting point below 840 degrees Ffor gate, globe, and check valves; below 421 degrees F for ball valves.B. Provide extended stems where insulation is specified.C. Valves shall be same size as upstream piping, unless otherwise shown.D. Drain valves shall be 1/2-inch globe type valves with capped male hose nipples. Install low pointdrains in cold and hot water systems.3 .3 INSTALLATION OF SANITARY SYSTEMA. Pitch sanitary pipe within building minimum of 2 percent downward for piping 3 inches andsmaller and 1 percent downward for piping 4 inches and larger. Make changes in direction ofdrainage lines with 45-degree wyes, long turn wyes, or sweep bends. Use long turn fittingswherever space conditions permit. Provide waterproofing around all lines penetrating throughfoundation walls and floor slabs.B. Check and verify all inverts of lines within and outside the building.C. Install traps on fixtures and equipment requiring connection to sanitary system. Traps shall besame size as pipe on which they occur. Provide cleanouts for all traps. Vent traps as shown andas required by local codes.D. Run condensate drain piping as shown and terminate as an indirect waste with 2-inch air gap.E. Cleanouts:1. Size same as drainage piping. Install cleanouts at each change in direction of pipinggreater than 45 degrees. Install cleanouts at base of each stack and each change indirection. Install cleanouts on minimum of 50-foot centers at horizontal runs.2. Cleaning screws, deckplates, and other plugs shall be made up with graphite and oil only;use of grease or cement is not allowed.3 .4 INSTALLATION OF WATER SYSTEMA. Install piping with 0.25 percent slope toward drain.B. Conceal water piping in finished areas.3 .5 HANGERS, ANCHORS, GUIDES15400-4PLUMBING SYSTEMS