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L <br /> FLOOR-CEILING SYSTEMS, WOOD-FRAMED <br /> GA FILE NO.FC 5241 GENERIC 1 HOUR 45 to 49 STC <br /> WOOD I-JOISTS,GYPSUM WALLBOARD, FIRE SOUND <br /> RESILIENT CHANNELS, <br /> Base layer 1/2"type X gypsum wallboard applied at right angles to resilient channels I� <br /> 16'c.c.with 11/4'Type S drywall screws 12"c.c.Resilient channels applied at right } lly <br /> angles to minimum 9 1/2'deep wood I-joists,with minimum 1 1/4"deep x 1 1/2'wide <br /> flanges and minimum 3/8'webs,24'o.c.with 1 1/4'Type W drywall screws.Face layer <br /> 1/2'type X gypsum wallboard applied at right angleslo channels with 1 5/8"Type S F rl rl <br /> drywall screws 12"o.c.Face layer end joints located midway between channels and <br /> attached to base layer with 1 1/2'Type G screws 12'o.c.Edge joints offset 24"from <br /> base layer edge joints.Wood Ijoists supporting 5/8'oriented strand board applied at <br /> right angles to I-joists with 8d common nails 12*o.c. Approx.Ceiling <br /> Weight: 5 psf <br /> Fire Test: NRCC A-4440.1(Revised), <br /> 6-24-97 <br /> Sound Test: NRCC B-3150.1,6-30-00 <br /> IIC 8 Test: 40(68 C 8 P) <br /> NRCC B-3150.1,6-30-00; <br /> NRCC B-3150.2,6-30-00 <br />