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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 - 6 <br />construction. Comply with details indicated and with recommendations of gypsum board manufacturer <br />or, if none available, with United States Gypsum Co.’s "Gypsum Construction Handbook." <br />C. Do not bridge building control and expansion joints with steel framing or furring members. <br />Independently frame both sides of joints with framing or furring members as indicated. <br />3.3 INSTALLING STEEL FRAMING FOR SUSPENDED AND FURRED CEILINGS <br />A. Suspend ceiling hangers from building structural members and as follows: <br />1. Install hangers plumb and free from contact with insulation or other objects within ceiling plenum <br />that are not part of supporting structural or ceiling suspension system. Splay hangers only where <br />required to miss obstructions and offset resulting horizontal forces by bracing, countersplaying, or <br />other equally effective means. <br />2. Where width of ducts and other construction within ceiling plenum produces hanger spacings that <br />interfere with the location of hangers required to support standard suspension system members, <br />install supplemental suspension members and hangers in form of trapezes or equivalent devices. <br />Size supplemental suspension members and hangers to support ceiling loads within performance <br />limits established by referenced standards. <br />3. Secure wire hangers by looping and wire-tying, either directly to structures or to inserts, eye <br />screws, or other devices and fasteners that are secure and appropriate for substrate, and in a <br />manner that will not cause them to deteriorate or otherwise fail. <br />4. Secure flat, angle, and rod hangers to structure, including intermediate framing members, by <br />attaching to inserts, eye screws, or other devices and fasteners that are secure and appropriate for <br />structure as well as for type of hanger involved, and in a manner that will not cause them to <br />deteriorate or otherwise fail. <br />5. Do not attach hangers to steel roof deck. Attach hangers to structural members. <br />6. Do not connect or suspend steel framing from ducts, pipes, or conduit. <br />B. Sway-brace suspended steel framing with hangers used for support. <br />C. Install suspended steel framing components in sizes and at spacings indicated, but not less than that <br />required by the referenced steel framing installation standard. <br />1. Wire Hangers: 48 inches o.c. <br />2. Carrying Channels (Main Runners): 48 inches o.c. <br />3. Furring Channels (Furring Members): 16 inches o.c. <br />D. Installation Tolerances: Install steel framing components for suspended ceilings so that cross-furring or <br />grid suspension members are level to within 1/8 inch in 12 feet as measured both lengthwise on each <br />member and transversely between parallel members. <br />E. Wire-tie or clip furring members to main runners and to other structural supports as indicated. <br />3.4 INSTALLING STEEL FRAMING FOR WALLS AND PARTITIONS <br />A. Install runners (tracks) at floors, ceilings, and structural walls and columns where gypsum board stud <br />assemblies abut other construction. <br />1. Where studs are installed directly against exterior walls, install asphalt felt strips or foam gaskets <br />between studs and wall. <br />B. Installation Tolerances: Install each steel framing and furring member so that fastening surfaces do not <br />vary more than 1/8 inch from the plane formed by the faces of adjacent framing. <br />C. Extend partition framing full height to structural supports or substrates above suspended ceilings, except <br />where partitions are indicated to terminate at suspended ceilings. Continue framing over frames for doors <br />and openings and frame around ducts penetrating partitions above ceiling to provide support for gypsum <br />board. <br />1. Cut studs ‰ inch short of full height to provide perimeter relief. <br />2. For STC-rated and fire-resistance-rated partitions that extend to the underside of floor/roof slabs <br />and decks or other continuous solid structural surfaces to obtain ratings, install framing around <br />structural and other members extending below floor/roof slabs and decks, as needed, to support <br />Docusign Envelope ID: 2D852F9B-A7CF-462A-9536-444A53AA848A