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1 <br /> C. Pipe Alignment Guides: Factory fabricated, of cast semi-steel or heavy fabricated steel, consisting of bolted two- <br /> section outer cylinder and base with two-section guiding spider that bolts tightly to pipe. Length of guides shall be <br /> as recommended by manufacturer to allow indicated travel. <br /> ' PART 3: EXECUTION <br /> ' 3.01 EXAMINATION <br /> A. Examine substrates and conditions under which supports and anchors are to be installed. Do not proceed with <br /> installing until unsatisfactory conditions have been corrected. <br /> ' 3.02 INSTALLATION OF HANGERS AND SUPPORTS <br /> A. General: Install hangers, supports, clamps and attachments to support piping properly from building structure; <br /> comply with MSS SP-69 and SP-89. Arrange for grouping of parallel runs of horizontal piping supported together <br /> on field-fabricated,heavy-duty trapeze hangers where possible. Install supports with maximum spacings complying <br /> with MSS SP-69. Where piping of various sizes is supported together by trapeze hangers, space hangers for <br /> smallest pipe size or install intermediate supports for smaller diameter pipe as specified above for individual pipe <br /> hangers. <br /> ' B. Install building attachments within concrete or to structural steel. Space attachments within maximum piping span <br /> length indicated in MSS SP-69. Install additional attachments at concentrated loads, including valves, flanges, <br /> guides, strainers,expansion joints and at changes in direction of piping. Install concrete inserts before concrete is <br /> ' placed; fasten insert to forms. Where concrete with compressive strength less than 2,500 psi is indicated, install <br /> reinforcing bars through openings at top of inserts. <br /> C. Install hangers and supports complete with necessary inserts,bolts,rods,nuts,washers,and other accessories. <br /> D. Field-Fabricated,Heavy Duty Steel Trapezes: Fabricate from steel shapes selected for loads required;weld steel in <br /> accordance with AWS D-1.1. <br /> E. Support fire protection systems piping independently from other piping systems. <br /> ' F. Install hangers and supports to allow controlled movement of piping systems, to permit freedom of movement <br /> between pipe anchors, and to facilitate action of expansion joints, expansion loops, expansion bends and similar <br /> units. <br /> ' G. Load Distribution: Install hangers and supports so that piping live and dead loading and stresses from movement <br /> will not be transmitted to connected equipment. <br /> H. Pipe Slopes: Install hangers and supports to provide indicated pipe slopes, and so that maximum pipe deflections <br /> allowed by ASMI B31.9 Building Services Piping Code is not exceeded. <br /> I. Insulated Piping: Comply with the following installation requirements. <br /> ' 1. Clamps: Attach clamps,including spacers(if any),to piping with clamps projecting through insulation;do not <br /> exceed pipe stresses allowed by ASME B31.9. <br /> e2. Saddles: Install protection saddles MSS Type 39 where insulation without vapor barrier is indicated. Fill <br /> interior voids with segments of insulation that match adjoining pipe insulation. <br /> ' 3. Shields: Install protective shields MSS Type 40 on cold and hydronic water piping that has vapor barrier. <br /> Shields shall span an arc of 180 degrees and shall have dimensions in inches not less than the following: <br /> 15140-3 No. [COMM] <br />