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3.02 PIPE APPLICATIONS <br /> A. Install Schedule 40 steel pipe with threaded joints and fittings for 1%2 inch and smaller. <br /> B. Install Schedule 10 steel pipe with roll-grooved ends and grooved mechanical couplings for 2 inch and larger. <br /> 3.03 PIPING INSTALLATIONS <br /> A. Locations and Arrangements: Drawings (plans, schematics, and diagrams) indicate the general location and <br /> arrangement of piping systems. So far as practical,install piping as indicated. <br /> 1. Deviations from approved."Working Plans" for sprinkler piping, require written approval of the authority , <br /> having jurisdiction. Written approval shall be on file with the Architect prior to deviating for the approved <br /> "Working Plans." <br /> B. Install sprinkler piping to provide for system drainage in accordance with NFPA 13. <br /> C. Use approved fittings to make all changes in direction,branch takeoffs from mains,and reductions in pipe sizes. , <br /> D. Install unions in pipes 2 inch and smaller,adjacent to each valve. Unions are not required on flanged devices or in <br /> piping installations using grooved mechanical couplings. <br /> E. Install flanges or flange adaptors on valves,apparatus,and equipment having 2-1/2 inch and larger connections. <br /> F. Hangers and Supports: Comply with the requirements of NFPA 13 and NFPA 14. Hanger and support spacing and , <br /> locations for piping joined with grooved mechanical couplings shall be in accordance with the grooved mechanical <br /> coupling manufacturer's written instructions,for rigid systems. Provide protection from damage and where subject <br /> to earthquake in accordance with NFPA 13. ' <br /> G. Make connections between underground and above-ground piping using an approved transition piece strapped or <br /> fastened to prevent separation. <br /> H. Install mechanical sleeve seal at pipe penetrations in basement and foundation walls. Refer to Section 15050'Basic <br /> Mechanical Materials and Methods." <br /> I. Install test connections sized and located in accordance with NFPA 13 and local Authority with jurisdiction , <br /> complete with shutoff valve. Test connections may also serve as drain pipes. <br /> J. Install pressure gage on the riser or feed main at or near each test connection. Provide gage with a connection not ' <br /> less than 1/4 inch and having a soft metal seated globe valve, arranged for draining pipe between gage and valve. <br /> Install gages to permit removal,and where they will not be subject to freezing. <br /> K. Obstructions to sprinkler distribution pattern by permanent building components such as electric fixtures, ducts, <br /> pipes,unit heaters,partitions,enclosed spaces and small nitches,etc.and which require additional heads to provide <br /> required coverage shall be the design and installation responsibility of this contractor. <br /> L. Piping shall be installed parallel to building components wherever possible and shall be concealed in walls and <br /> above ceilings unless indicated otherwise on the plans. <br /> M. Pipes passing through masonry or concrete walls/floors and smoke/fire rated walls/floors shall be provided with , <br /> pipe sleeves set in place at the time of construction. Where core drilling is required, coordinate with structural <br /> engineer so as not to reduce the load carrying capacity of the structure. ' <br /> 15300-6 No.99132-CP2 ' <br />