2022-133-E-AMS-Warren Hay Mechanical Contractors-Emergency Services Warehouse Dehumidification

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ORANGE COUNTY 260534-4 Emergency Management Warehouse Building Dehumidification Raceways Fasten heavy wall conduit terminations in sheet metal enclosures by two locknuts, one inside and one outside of 1 enclosure, and terminate with insulated bushing; terminate other conduit systems with connectors listed for the 2 purpose and as described above. 3 4 Conduit couplers shall be steel threaded type in all locations where such use is possible. Otherwise use 3-piece 5 union. 6 7 Conduits are not to cross pipe shafts or ventilating duct openings. Conduit is not to be routed in elevator shafts 8 unless necessary to serve items within the shaft. 9 10 Keep conduits a minimum distance of 6" from parallel runs of hot water pipes or other sources of heat. Wherever 11 possible, install horizontal raceway runs above water piping. 12 13 Support riser conduit at each floor level with clamp hangers. 14 15 Use of running threads at conduit joints and terminations is prohibited. Where required, use threaded nipples and 16 3-piece unions. 17 18 Support exposed conduit by use of hangers, clamps or clips Listed for the purpose. Support conduit on each side of 19 bends and on spacing not to exceed following: 20 21 • Rigid Metal Conduits Up to 1": 8'-0". 22 • Rigid Metal Conduits 1-1/4" and Over: 10'-0". 23 • EMT Up to 1": 8'-0". 24 • EMT 1-1/4" and Over: 10'-0". 25 26 Arrange conduit supports to prevent distortion of alignment by wire pulling operations. Fasten conduit using 27 galvanized straps, lay-in adjustable hangers, clevis hangers, or bolted split stamped galvanized hangers Listed for 28 the purpose. Requirements for exposed conduits also apply to conduits installed in space above hung ceilings. 29 30 Concealed Conduits: 31 32 • Metallic raceways installed underground, in floors below grade (where permitted), or outside are to 33 have conduit threads painted with corrosion inhibiting compound before couplings are assembled. 34 Draw up coupling and conduit sufficiently tight to ensure a water tight joint. 35 • For floors-on-grade (where permitted), install conduits under crushed rock and concrete slabs. 36 • Install underground conduits 24" below finished grade (24" cover) as a minimum or as otherwise 37 indicated on the Drawings if a greater depth is shown. 38 39 Exposed Conduits: 40 41 • Install conduits in a manner so as not to damage or run through structural members. Avoid 42 horizontal or cross runs in building partitions or side walls. 43 • Install exposed conduits and extensions from concealed conduit systems neatly, parallel with, or at 44 right angles to walls of building. 45 • Install exposed conduit work as not to interfere with ceiling inserts, lights or ventilation ducts or 46 outlets. Coordinate conduit installation with other trades as required. 47 • Install exposed conduit directly on structure using two hole straps. Provide offsets at all boxes and 48 as required to avoid exiting utilities. 49 • Conduits installed on interior of exterior walls shall be spaced off the wall surface a minimum of ¼ 50 inch with appropriate straps. 51 52 Run conduits for outlets on waterproof walls exposed where indicated on the Drawings. Set anchors for 53 supporting conduit on waterproof wall in waterproof cement. Requirements for exposed conduit also apply to 54 conduits installed in space above hung ceilings. 55 56 Raceway Fittings: Install connectors, couplers, and related fittings as required for a complete raceway system. 57 58 Install insulated bushings for terminating all types of raceway where termination is not made with an 59 insulated throat connector. 60 61 DocuSign Envelope ID: 7668B866-6C26-485C-9A45-DAAB5D4BD951