초록 ▼

An interior building wall construction is achieved which is superior in its combined capabilities for resistance to both seismic activity and fire. The head-of-wall construction at the interface between an interior building wall employing sheet metal framing and a ceiling thereabove exceeds even the

An interior building wall construction is achieved which is superior in its combined capabilities for resistance to both seismic activity and fire. The head-of-wall construction at the interface between an interior building wall employing sheet metal framing and a ceiling thereabove exceeds even the most stringent building code requirements for fire and seismic resistance. Seismic resistance is achieved by providing the beam at the top of the wall with slots elongated in a longitudinal direction in the web of the beam and with vertically elongated slots in the side walls of the beam. Standoff washers are provided in the elongated slots and the ceiling fasteners and stud fasteners employed extend through these standoff washers to securely join the studs, beam, and ceiling above together, yet permit limited relative movement therebetween when the building is subjected to seismic activity. Superior fire resistance is achieved by employing an economical, fire resistant, resiliently compressible, sponge-like mineral fiber insulation in any cavities above the beam and along the top of the wall. Strips of this mineral fiber insulation material are held in place along the top of the wall by providing a double thickness of wallboard at the head-of-wall in which an outer, secondary layer of wallboard material overlies and projects vertically beyond an underlying primary wallboard panel. A gap is left at the tops of both of the layers of wallboard so that strips of the mineral fiber insulation can be packed into these gaps between the wallboard and the ceiling and will remain in position without any type of adhesive or other fastening system. The beam of the head-of-wall is die cut to form anchoring tabs that can be bent upwardly into sections of mineral fiber located in one or more tunnels formed by the flutes of decking above the wall.

대표청구항 ▼

[ I claim:] [1.] In a seismic and fire-resistant interior wall structure installed between a floor and a ceiling, and including a plurality of vertical metal studs extending upwardly from said floor and arranged in linear alignment with each other across said floor, each stud being comprised of a ch

[ I claim:] [1.] In a seismic and fire-resistant interior wall structure installed between a floor and a ceiling, and including a plurality of vertical metal studs extending upwardly from said floor and arranged in linear alignment with each other across said floor, each stud being comprised of a channel having opposing upright sides; a metal, concave, downwardly facing, channel-shaped beam having a web and opposing side walls with vertically elongated stud fastener openings defined therethrough depending from said web, wherein said beam extends across said upper ends of said studs with said web residing in contact with said ceiling and with said side walls of said beam embracing said upright sides of said studs near upper ends thereof; ceiling fasteners extending through said web of said beam to secure said beam to said ceiling; stud fasteners extending through at least some of said stud fastener openings in said beam and into said studs to attach said beam to said upper ends of said studs; and primary wallboard wall panels fastened to and in contact with said upright sides of said studs; the improvement wherein a primary wallboard gap exists between said primary wall board wall panels and said ceiling, and further comprising secondary wallboard wall panels that reside in contact with and cover at least the upper portions of said primary wallboard wall panels and which are secured therethrough to said upright sides of said studs and wherein secondary wallboard gaps exist between said secondary wallboard wall panels and said ceiling which are narrower than said gap that exists between said primary wallboard wall panels and said ceiling, and all of said gaps are filled with compressible, resilient, nonflammable mineral fiber.