E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
20/27
E04B 2/00 (2006.01)
Patent
CA 1306093
ABSTRACT OF THE DISCLOSURE A ceiling of wall for a partition structure that contains framing members has the usual sheets of wallboard applied side-by-side to the framing members so that seams exist between the edges of adjacent sheets. Improved fire resistance is derived from runners which extend between the framing members directly behind the seams so as to serve as fire stops and as additional support for the wallboard sheets. Each runner is at its ends attached to the framing members between which it extends and further consists of several components which slip relative to each other, so that the length of the runner remains constant even though its components experience thermal expansion. This prevents the runners from bowing and pushing the wallboard sheets away from the framing members in the event of a fire. The runners further receive and anchor edge fasteners. Each edge fastener consists of a screw which passes through a seam between two sheets and threads into the runner behind that seam and also a disk which the screw draws up against the exposed surfaces of the sheets on each side of the seam. The disks, while supporting the sheets, allow the sheets to shrink without destroying their structural integrity in the region of support. To in stall the ceiling or other wall surface, the first sheet of wallboard is attached to the framing members; then the runners are installed by fitting them partially under the first sheet and securing them to the framing members; next - 1 - the second sheet is attached to the framing members; there- after the edge fasteners are installed along the seam; and finally the seam is covered with joint cement and tape. The runners have tabs which cause them to be located against the edge of the first sheet so as to be centered with respect to the seam when the second sheet is attached to the framing members. - 1a -
560118
Alpine Engineered Products Inc.
Eberle George
Swabey Ogilvy Renault
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