Suspended acoustical ceiling grid assemblies featuring twelve-gauge hanger wires installed four feet on center each way with three minimum turns and a one-and-one-half-inch run. Twelve-gauge splayed seismic bracing wires are set at forty-five degrees off horizontal every one hundred forty-four square feet maximum in line with runners and secured to the structure per CISCA standards. Main runners and cross tees utilize fifteen-sixteenths-inch angle moldings with BERC two seismic clips anchored to structural elements. Two-inch by twenty-five-gauge steel studs are screw-attached to main tees and structure above at each seismic restraint location, with heavy-duty main runners and seismic fixture clamps at all four corners of light fixtures.
JOIST WEB MEMEMBERS BOTTOM JOIST CHORD SPLAYED SIESMIC BRACING WIRE INSTALLED PER CISCA STANDARDS PARALLEL TO JOISTS. DO NOT INSTALL PERPENDICULAR TO JOISTS 3 TURNS MIN. (1−1/2" RUN) ACOUSTICAL CEILING SUSPENSION WIRE (TEST FOR 400 LBS.) INSTALLED PER CISCA STANDARDS 12 GA. HANGER WIRE 4’−0" O.C. EA. WAY W/ HANGER WIRE AROUND PERIMETER (8" MAX FROM EDGE @ MAIN & CROSS TEES) = WHERE OCCURS 12 GA. SPLAYED SEISMIC BRACING WIRES (45 DEGREES OFF OF HORIZ., EVERY 144 SQ. FT. MIN.) IN LINE W/ RUNNERS, SECURED TO STRUCTURE PER CISCA STANDARDS MAIN RUNNER 45 ° TYP. METAL CLIP OR SADDLE WIRE CLIP 2" MAX TYPICAL WIRE CONNECTION TO TRUSS / ROOF JOIST / HARD CEILING 12 GA. HANGER WIRE 4’−0" O.C. EA. WAY W/ HANGER WIRE AROUND PERIMETER (8" MAX FROM EDGE @ MAIN & CROSS TEES) 3 TURNS MIN. (1−1/2" RUN) MAIN RUNNER OR CROSS TEE AS SCHEDULED CEILING TILE AS SCHEDULED BERC 2 SEISMIC CLIP 15/16" ANGLE MOLDING − ANCHOR TO STRUCTURAL ELEMENT FASTEN TO DECK ACOUSTICAL CEILING SUSPENSIN WIRE (TEST FOR 400 LBS.) 2" X 25 Ga STEEL STUD (OR ACCEPTED ALTERNATE) SCREW ATTACHED TO MAIN TEE AND TO STRUCTURE ABOVE AT EACH SEISMIC RESTRAINT LOCATION 12 GA. SPLAYED SEISMIC BRACING WIRES (45 OFF OF HORIZ., EVERY 144 SQ. FT. MIN.) SECURED TO STRUCTURE PER CISCA STANDARDS MAIN TEE SLACK WIRES 12 GA. METAL HANGER WIRES LIGHT FIXTURE AS SCHEDULED HEAVY DUTY MAIN 3" MAX RUNNER CROSS TEE SEISMIC FIXTURE CLAMPS AT ALL (4) CORNERS − INSTALL PER MANUF
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