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CONDUITS FITTINGS & SUPPORTS Section 16021 15-1207 a. Pack space between conduit and walls with non-combustible materials. Make penetrations through floors watertight, even when concealed within wall or furred space. b. Make penetrations through any dampproofed/waterproofed surfaces dampproof/waterproof by appropriate means to maintain integrity of system penetrated. This includes penetrations made by hangers suspended from such surfaces. C. Provide chrome plated escutcheon plates at exposed wall, ceiling and floor conduit penetrations. 15. Firestopping: a. Seal all conduit penetrations through fire rated walls and floors fire and smoke tight in conformance with CBC Sections 709 and 710, and 2013 CEC 300-21. b. Refer to provisions of Section 07270. 16. To facilitate pulling of feeder conductors install pullboxes as shown or required, junction boxes where specified. 17. Chasing: Do not "chase" concrete to install conduit unless specifically directed by the Architect. 18. Expansion Joints: Where crossing of expansion joints is unavoidable, cross concealed conduit in concrete structure at right angels with expansion sleeve fitting. Expansion Fitting: Designed to compensate for expansion and contraction in line of conduit. Seal expansion end by high-grade packing, which will prevent entrance of water or moisture. Provide end of conduit with insulated bushings. Provide copper grounding rings or auxiliary flexible bonding jumper, equal to at least three (3) times the nominal width of joint, carefully installed to insure proper operation, to secure continuous ground between conduit and fitting. Provide expansion fitting as follows: a. Provide conduit expansion fitting in each conduit run, which is mechanically attached to separate structures to relieve strain caused by shift of one structure in relation to another. b. Provide conduit expansion fitting in each conduit run wherever it crosses expansion joint in structure to which it is attached. C. Provide expansion fittings where expansion and contraction are a consideration in long runs of exposed conduits (one inch [1 "] or larger conduit in excess of one hundred feet [100']). 19. Seal underground conduit terminating in exposed or outdoor equipment and junction boxes and underground conduit entering equipment with Babcock & Wilcox "Kaowool", Carborundum "Fiberflex", John Mansville "Ceraflex", and Flammastic "Mastic" or equal. 20. Supports: Sizes of rods and cross channels shall be capable of supporting four (4) times actual load. Hanger rods shall have safety factor of five (5) based on ultimate strength of material used. Anchorage shall support combined weight of conduit, hanger and conductors. a. Support individual horizontal conduit one and one-half inch (1 1/2") size and smaller by means of two (2) hole straps or individual hangers. Support larger size conduit with hangers. Perforated strap hangers not acceptable. 8