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DocuSign Envelope ID: 313DA256 -1EDE- 4396- A716- 4C53B809027E <br />JERRY M. PASSMORE CENTER ADDITION AND RENOVATION <br />HILLSBOROUGH, NORTH CAROLINA <br />C. Install panels with face side out. Butt panels together for a light contact at edges and ends with <br />not more than 1/16 inch (1.5 mm) of open space between panels. Do not force into place. <br />D. Locate edge and end joints over supports, except in ceiling applications where intermediate <br />supports or gypsum board back - blocking is provided behind end joints. Do not place tapered <br />edges against cut edges or ends. Stagger vertical joints on opposite sides of partitions. Do not <br />make joints other than control joints at corners of framed openings. <br />E. Form control and expansion joints with space between edges of adjoining gypsum panels. <br />F. Cover both faces of support framing with gypsum panels in concealed spaces (above ceilings, <br />etc.), except in chases braced internally. <br />Unless concealed application is indicated or required for sound, fire, air, or smoke <br />ratings, coverage may be accomplished with scraps of not less than 8 sq. ft. (0.7 sq. m) in <br />area. <br />2. Fit gypsum panels around ducts, pipes, and conduits. <br />3. Where partitions intersect structural members projecting below underside of floor /roof <br />slabs and decks, cut gypsum panels to fit profile formed by structural members; allow <br />1/4- to 3/8 -inch- (6.4- to 9.5 -mm -) wide joints to install sealant. <br />G. Isolate perimeter of gypsum board applied to non -load- bearing partitions at structural <br />abutments, except floors. Provide 1/4- to 1/2 -inch- (6.4- to 12.7 -mm -) wide spaces at these <br />locations and trim edges with edge trim where edges of panels are exposed. Seal joints between <br />edges and abutting structural surfaces with acoustical sealant. <br />H. Attachment to Steel Framing: Attach panels so leading edge or end of each panel is attached to <br />open (unsupported) edges of stud flanges first. <br />I. STC -Rated Assemblies: Seal construction at perimeters, behind control joints, and at openings <br />and penetrations with a continuous bead of acoustical sealant. Install acoustical sealant at both <br />faces of partitions at perimeters and through penetrations. Comply with ASTM C 919 and with <br />manufacturer's written recommendations for locating edge trim and closing off sound - flanking <br />paths around or through assemblies, including sealing partitions above acoustical ceilings. <br />Install sound attenuation blankets before installing gypsum panels unless blankets are readily <br />installed after panels have been installed on one side. <br />3.3 APPLYING INTERIOR GYPSUM BOARD <br />A. Install interior gypsum board in the following locations: <br />1. Type X: Vertical surfaces unless otherwise indicated. <br />2. Ceiling Type: As indicated on Drawings. <br />3. Moisture- and Mold- Resistant Type: As indicated on Drawings. <br />B. Single -Layer Application: <br />On ceilings, apply gypsum panels before wall/partition board application to greatest <br />extent possible and at right angles to framing unless otherwise indicated. <br />GYPSUM BOARD 092900-5 <br />