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DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> SECTION 09 21 16-GYPSUM BOARD ASSEMBLIES <br /> PART 3-EXECUTION <br /> 3.1 EXAMINATION <br /> A. Examine areas and substrates, with Installer present, and including window and door frames, cast-in anchors, and <br /> structural framing, for compliance with requirements and other conditions affecting performance. Proceed with <br /> installation only after unsatisfactory conditions have been corrected. <br /> 3.2 PREPARATION <br /> A. Suspended Ceilings: Coordinate installation of ceiling suspension systems with installation of overhead structure to <br /> ensure that inserts and other provisions for anchorages to building structure have been installed to receive ceiling <br /> hangers at spacing required to support ceilings and that hangers will develop their full strength. <br /> 1. Furnish concrete inserts and other devises indicated to other trades for installation in advance of time needed <br /> for coordination and construction. <br /> 3.3 INSTALLING STEEL FRAMING, GENERAL <br /> A. Installation Standards:ASTM C 754, and ASTM C 840 requirements that apply to framing installation. <br /> B. Isolate steel framing from building structure at locations indicated to prevent transfer of loading imposed by <br /> structural movement. <br /> 1. Isolate ceiling assemblies where they abut or are penetrated by building structure. <br /> 2. Isolate partition framing and wall furring where it abuts structure, except at floor. Install slip-type joints at head <br /> of assemblies that avoid axial loading of assembly and laterally support assembly. <br /> a. Use deep-leg deflection track where indicated. <br /> C. Do not bridge building control and expansion joints with steel framing or furring members. Frame both sides of joints <br /> independently. <br /> 3.4 INSTALLING STEEL FRAMING <br /> A. Installation Tolerance: Install each steel framing and furring member so fastening surfaces vary not more than 1/8 <br /> inch from the plane formed by the faces of adjacent framing. <br /> B. Extend furring full height to floor slab and roof decking. <br /> 1. Cut studs 1/2 inch short of full height to provide perimeter relief. <br /> C. Install furring at the following spacings: <br /> 1. Single-Layer Construction: 16 inches o.c., unless otherwise indicated. <br /> D. Install furring so flanges point in the same direction and leading edge or end of each panel can be attached to open <br /> (unsupported)edges of stud flanges first. <br /> E. Frame door openings to comply with GA-600 and with gypsum board manufacturer's applicable written <br /> recommendations, unless otherwise indicated. Screw vertical studs at jambs to jamb anchor clips on door frames; <br /> install runner track section (for cripple studs)at head and secure to jamb studs. <br /> 1. Install two studs at each jamb, unless otherwise indicated. <br /> 2. Install cripple studs at head adjacent to each jamb stud, with a minimum 1/2-inch clearance from jamb stud to <br /> allow for installation of control joint. <br /> 3. Extend jamb studs through suspended ceilings and attach to underside of floor or roof structure above. <br /> F. Frame openings other than door openings the same as required for door openings, unless otherwise indicated. <br /> Install framing below sills of openings to match framing required above door heads. <br /> 3.5 APPLYING AND FINISHING PANELS, GENERAL <br /> A. Gypsum Board Application and Finishing Standards:ASTM C 840 and GA-216. <br /> B. Install gypsum panels with face side out. Butt panels together for a light contact at edges and ends with not more <br /> than 1/16 inch of open space between panels. Do not force into place. <br /> C. Locate edge and end joints over supports,except in ceiling applications where intermediate supports or gypsum board back- <br /> blocking is provided behind end joints. Do not place tapered edges against cut edges or ends. Stagger vertical joints on <br /> opposite sides of partitions.Do not make joints other than control joints at corners of framed openings. <br /> D. Install wall panels 1/2-inch off finish floor slab. Provide fire rated sealant to close gap in base of wall to slab on rated <br /> walls. <br /> ©BOOMERANG DESIGN#1835 0921 16-3 510 Meadowlands Drive,Hillsborough, NC <br /> ORANGE COUNTY,NC 11/15/18 <br />