2018-425-E AMS - Sasser Companies Annex upfit

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DocuSign Envelope ID: 9826C043- 4C32- 49CD- A4CC- DC28ABAB7CE7 SECTION 237690 - HANGERS AND SUPPORTS FOR HVAC PIPING AND EQUIPMENT B. Comply with MSS SP -69 for pipe hanger selections and applications that are not specified in piping system Sections. C. Use hangers and supports with galvanized, metallic coatings for piping and equipment that will not have field - applied finish. D. Use nonmetallic coatings on attachments for electrolytic protection where attachments are in direct contact with copper tubing. E. Use padded hangers for piping that is subject to scratching. F. Horizontal- Piping Hangers and Supports: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Adjustable, Steel Clevis Hangers (MSS Type 1): For suspension of noninsulated or insulated stationary pipes, NPS 1/2 to NPS 30. 2. Yoke -Type Pipe Clamps (MSS Type 2): For suspension of 120 to 450 deg F pipes, NPS 4 to NPS 16, requiring up to 4 inches of insulation. 3. Carbon- or Alloy - Steel, Double -Bolt Pipe Clamps (MSS Type 3): For suspension of pipes, NPS 3/4 to NPS 24, requiring clamp flexibility and up to 4 inches of insulation. 4. Adjustable, Steel Band Hangers (MSS Type 7): For suspension of noninsulated stationary pipes, NPS 1/2 to NPS 8. 5. U -Bolts (MSS Type 24): For support of heavy pipes, NPS 1/2 to NPS 30. 6. Pipe Saddle Supports (MSS Type 36): For support of pipes, NPS 4 to NPS 36, with steel pipe base stanchion support and cast -iron floor flange. 7. Single Pipe Rolls (MSS Type 41): For suspension of pipes, NPS 1 to NPS 30, from 2 rods if longitudinal movement caused by expansion and contraction might occur. 8. Complete Pipe Rolls (MSS Type 44): For support of pipes, NPS 2 to NPS 42, if longitudinal movement caused by expansion and contraction might occur but vertical adjustment is not necessary. G. Vertical- Piping Clamps: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Extension Pipe or Riser Clamps (MSS Type 8): For support of pipe risers, NPS 3/4 to NPS 20. 2. Carbon- or Alloy -Steel Riser Clamps (MSS Type 42): For support of pipe risers, NPS 3/4 to NPS 20, if longer ends are required for riser clamps. H. Hanger -Rod Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel Turnbuckles (MSS Type 13): For adjustment up to 6 inches for heavy loads. 2. Steel Clevises (MSS Type 14): For 120 to 450 deg F piping installations. I. Building Attachments: Unless otherwise indicated and except as specified in piping system Sections, install the following types: 1. Steel or Malleable Concrete Inserts (MSS Type 18): For upper attachment to suspend pipe hangers from concrete ceiling. 2. Top -Beam C- Clamps (MSS Type 19): For use under roof installations with bar -joist construction to attach to top flange of structural shape. 3. Side -Beam or Channel Clamps (MSS Type 20): For attaching to bottom flange of beams, channels, or angles. 4. Center -Beam Clamps (MSS Type 21): For attaching to center of bottom flange of beams. 5. Welded Beam Attachments (MSS Type 22): For attaching to bottom of beams if loads are considerable and rod sizes are large. 6. C- Clamps (MSS Type 23): For structural shapes. 7. Welded -Steel Brackets: For support of pipes from below, or for suspending from above by using clip and rod. Use one of the following for indicated loads: a. Light (MSS Type 31): 750 lb. b. Medium (MSS Type 32): 1500 lb. C. Heavy (MSS Type 33): 3000 lb. 8. Side -Beam Brackets (MSS Type 34): For sides of steel or wooden beams. 9. Plate Lugs (MSS Type 57): For attaching to steel beams if flexibility at beam is required. J. Saddles and Shields: Unless otherwise indicated and except as specified in piping system Sections, install the following types: Reece, Noland & McElrath, Inc. 237690-4 Orange County Board of Elections Orange Co., NC 05/04/18