specifications - FAACO - Federal Aviation Administration Contract ...

3.05 SUSPENDED CEILINGS:FTWIC-2235June, 2009A. Space 1-1/2" inch, cold rolled channels at 4'-0" maximum centers and suspend from thestructure using 8 gauge hanger wire spaced at 48" inch centers. Furring channels shall belapped 8 inches at splices and tied near each end with two loops of 16 ga tie wire.Stagger Splices. Provide one (1) hanger wire within 8" inches of wall or discontinuousend of channel. Attach hanger wires to channels with saddle ties.B. Attach drywall furring channel to 1-1/2" inch runner channels at 16" inch spacings.Attach furring channel clips at each channel on alternate sides or adjacent member, orsaddle tie with double strands of 16 gauge tie wire. Furring channels shall be locatedwithin 2" of walls.C. For exterior soffits, install cross-bracing and additional framing as required to resist winduplift.3.06 FURRED CHASES:A. Furnish furred chases as specified. Chases shall be formed by spaced studs or by"Chased-Wall" construction. For "Chased-Wall" type, place a double row of runnersparallel and anchor at 24" inch centers. Position a double row of vertical studs in therunners and in line with opposing studs. Accomplish cross bracing between adjacentstuds using 5/82 sheetrock sections 12" inches in dimension. Attach screw to stud websat quarter points of the stud height. Screws shall be Type S spaced at 8" inch centers. Aminimum of three (3) cross braces per pair of studs shall be required.B. At any location where gypsum wallboard is applied to only one side of studs, brace studsat 48 inch centers maximum vertical spacing using metal members on opposite side ofstuds or anchor studs to continuous furring strips securely anchored to wall beyond thestud line.3.07 FASTENER APPLICATION:Screws used for fastener application shall conforming to the following:Application Wallboard Thickness Screw TypeSingle layer to studs 5/8" 1" Type S bugle headDouble layer to studs 5/8" 1-5/8" Type S bugle headWood cabinets to studsStuds to runnersSteel studs to door frameStuds and tracks to concreteStuds to CMU1-5/8" Type S oval head3/8" Type S12 pan head1/2" Type S12 clips low profileExpansion bolts with shields orpower activated fastenersToggle Bolts09260-7