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Orange County Health Department Improvements Smith Sinnett / 2024008 <br />Hillsborough, NC Orange County Asset Management Services <br />GYPSUM BOARD 09 29 00 - 7 <br />gypsum board closures needed to make partitions continuous from floor to underside of solid <br />structure. <br />D. Install steel studs and furring in sizes and at spacings indicated. <br />1. Single-Layer Construction: Space studs 16 inches o.c., unless otherwise indicated. <br />2. Multilayer Construction: Space studs 16 inches o.c., unless otherwise indicated. <br />E. Install steel studs so flanges point in the same direction and leading edge or end of each gypsum board <br />panel can be attached to open (unsupported) edges of stud flanges first. <br />F. Frame door openings to comply with GA-219, and with applicable published recommendations of <br />gypsum board manufacturer, unless otherwise indicated. Attach vertical studs at jambs with screws either <br />directly to frames or to jamb anchor clips on door frames; install runner track section (for cripple studs) at <br />head and secure to jamb studs. <br />1. Install double 20-gage studs at each jamb, unless otherwise indicated. <br />2. Install cripple studs at head adjacent to each jamb stud, with a minimum ‰-inch clearance from <br />jamb stud to allow for installation of control joint. <br />G. Frame openings other than door openings to comply with details indicated or, if none indicated, as <br />required for door openings. Install framing below sills of openings to match framing required above door <br />heads. <br />3.5 APPLYING AND FINISHING PANELS, GENERAL <br />A. Comply with ASTM C 840. <br />B. Install ceiling panels across framing to minimize the number of abutting end joints and to avoid abutting <br />end joints in central area of each ceiling. Stagger abutting end joints of adjacent panels not less than one <br />framing member. <br />C. Install sound-attenuation blankets, where indicated, prior to installing gypsum panels unless blankets are <br />readily installed after panels have been installed on one side. <br />D. Attach gypsum panels to steel studs so leading edge or end of each panel is attached to open <br />(unsupported) edges of stud flanges first. <br />E. Attach gypsum panels to framing provided at openings and cutouts. <br />F. Install 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 />G. Locate edge and end joints over supports, except in ceiling applications where intermediate supports or <br />gypsum board back-blocking is provided behind end joints. Do not place tapered edges against cut edges <br />or ends. Stagger vertical joints on opposite sides of partitions. Do not make joints other than control <br />joints at corners of framed openings. <br />H. Form control and expansion joints with space between edges of adjoining gypsum panels. <br />I. Cover both faces of support framing with gypsum panels in concealed spaces (above ceilings, etc.), <br />except in chases braced internally. <br />1. Unless concealed application is indicated or required for sound, fire, air, or smoke ratings, <br />coverage may be accomplished with scraps of not less than 8 sq. ft. in area. <br />2. Fit gypsum panels around ducts, pipes, and conduits. <br />3. Where partitions intersect structural members projecting below underside of floor/roof slabs and <br />decks, cut gypsum panels to fit profile formed by structural members; allow 1/4- to 3/8-inch- wide <br />joints to install sealant. <br />J. Isolate perimeter of gypsum board applied to non-load-bearing partitions at structural abutments, except <br />floors. Provide 1/4- to 1/2-inch- wide spaces at these locations, and trim edges with edge trim where <br />edges of panels are exposed. Seal joints between edges and abutting structural surfaces with acoustical <br />sealant. <br />K. Attachment to Steel Framing: Attach panels so leading edge or end of each panel is attached to open <br />(unsupported) edges of stud flanges first. <br />L. Space fasteners in gypsum panels according to referenced gypsum board application and finishing <br />standard and manufacturer’s recommendations. <br />1. Space screws a maximum of 12 inches o.c. for vertical applications. <br />Docusign Envelope ID: 2D852F9B-A7CF-462A-9536-444A53AA848A