A seismic cable restraint assembly for suspended mechanical piping is anchored to overhead joists. A three-inch by three-inch by one-quarter-inch angle iron support is welded to the joists to receive a half-inch bolt and double nut assembly securing a hanger rod. The piping is supported by a Unistrut trapeze connected with a seismic rod clamp and rod bracing angle. Cable bracing is field-assembled at a nominal forty-five-degree angle using U-bolt cable clips, thimbles, and shackles, with one end factory-swaged. Tensioning is adjusted only enough to remove sag per the installation notes.
3"x3"x1/4" ANGLE IRON SUPPORT WELDED TO JOISTS 1/2" BOLT AND DOUBLE NUT ASSEMBLY HANGER ROD SEISMIC ROD CLAMP (SEE DETAIL BELOW) ROD BRACING ANGLE PIPING PIPING CLAMP UNISTRUT HANGER ROD ROD STIFFENER ANGLE FACTORY SWAGED ONE END ONLY NOTES: 1. SEISMIC RESTRAINTS TO BE INSTALLED PER CODE REQUIREMENTS, DIVISION 23 OF THE SPECIFICATIONS AND ASHRAE SEISMIC RESTRAINT MANUAL. 2. ONE CABLE RESTRAINT KIT TO CONSIST OF: 2 - CABLES SWAGED AT ONE END 4 - CABLE RESTRAINT ANGLE BRACKETS 4 - SHACKLES 4 - CABLE CLIPS 2 - THIMBLES 3. ONE PAIR OF CABLES REQUIRED AT EVERY ISOLATED HANGER LOCATION. 4. TENSION CABLE ONLY ENOUGH TO REMOVE SAG. 5. CONNECTDION TO OVERHEAD STRUCTURE SHALL BE MODIFIED AS REQUIRED FOR VARIOUS TYPES OF STRUCTURES. 6. TRANSVERSE BRACING IS SHOWN, INSTALL LONGITUDINAL BRACING AS REQ UIRED BY SRM. 7. SEE GENERAL NOTES ON SHEET M0.1 FOR SEISMIC SUPPORT CRITERIA. CABLE BRACING U-BOLD CABLE CLIP 1/2" BOLT AND DOUBLE NUT ASSEMBLY 45° NOM. FIELD ASSEMBLE CONNECTION TO RECUIRED LENGTH OF CABLE
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