Laserfiche WebLink
F <br /> PART 3: EXECUTION <br /> 3.01 PIPE APPLICATIONS <br /> A. Install steel pipe with threaded joints and fittings for 2 inch and smaller, and with welded joints for 2-1/2 inch and ' <br /> larger. Steam supply pipe shall be schedule 40. Condensate return pipe shall be schedule 80. <br /> 3.02 PIPING INSTALLATIONS <br /> A. General Locations and Arrangements: Drawings, (plans, schematics, and diagrams) indicate the general location <br /> and arrangement of the piping systems. Location and arrangement of piping layout take into consideration pipe <br /> sizing and friction loss,expansion,pump sizing,and other design considerations. So far as practical,install piping <br /> as indicated. Refer to individual system specifications for requirements for coordination drawing submittals. <br /> B. Use fittings for all changes in direction and all branch connections. <br /> C. Conceal all pipe installations in walls, pipe chases, utility spaces, above ceilings, below grade or floors, unless <br /> indicated to be exposed to view. <br /> D. Install exposed piping at right angles or parallel to building walls. Diagonal runs are not permitted,unless expressly <br /> indicated. <br /> E. Install piping free of sags or bends and with ample space between piping to permit proper insulation applications. <br /> F. Install piping tight to slabs,beams,joists, columns, walls, and other permanent elements of the building. Provide <br /> space to permit insulation applications,with 1 inch clearance outside the insulation. Allow sufficient space above <br /> removable ceiling panels to allow for panel removal. <br /> G. Locate groups of pipes parallel to each other,spaced to permit applying insulation and servicing of valves. <br /> H. Install drains at low points in mains,risers,and branch lines consisting of a tee fitting,3/4 inch ball valve,and short <br /> 3/4 inch threaded nipple and cap. , <br /> I. Exterior Wall Penetrations: Where pipes pass through fire rated walls,partitions, ceilings,and floors,maintain the <br /> fire rated integrity. Refer to Division 7 for special sealers and materials. <br /> J. Interior Miscellaneous Penetration: Where pipes pass through interior walls, partitions, ceilings, or floors, the <br /> acoustic and airflow resisting characteristics shall be maintained. Seal pipe penetrations using sleeves and special <br /> sealers and material as prescribed in Division 7. <br /> K. Fire Barrier Penetrations: Where pipes pass through fire rated walls,partitions, ceilings, or floors, the fire rated <br /> integrity shall be maintained. Refer to Division 7 for special sealers and materials. <br /> L. Install steam supply piping at a uniform grade of 1/4 inch in ten feet downward in the direction of flow. <br /> M. Install condensate return piping at a uniform grade of 1/2 inch in ten feet downward in the direction of flow. <br /> N. Install branch connections to supply mains using 45 degree fittings in main with take-off out the top of the main. <br /> Use of 90 degree"tee"fittings is permissible,where use of 45 degree fittings are not practical. Where the length of , <br /> a branch takeoff is less than 10 feet,pitch branch line down toward mains, 1/2 inch per 10 feet. <br /> O. Make reductions in pipe sizes using eccentric reducer fitting installed with the level side down. <br /> P. Install unions in pipes 2 inch and smaller,adjacent to each valve,at final connections each piece of equipment,and <br /> elsewhere as indicated. Unions are not required on flanged devices. <br /> 15520-6 No.99132-CP2 <br />