GB683081A - Improvements in supporting members for use in structural work - Google Patents

Abstract

683,081. Structural members; joints. ANDERSON & SON, Ltd., D., and McQUILKIN, F. A. April 2, 1951 [April 11, 1950], No. 8891/50. Class 20(ii) Structural members, more particularly for roofs, of sheet metal box section having a central longitudinal slat where they are provided with one or two webs 5 which may be bent over to form flanges 6 and provide recesses for the edges of roof slabs 7 are joined end to end by channel shaped connector shoes 20, Fig. 6, to which they are bolted. The box section members may be formed in two parts welded together, Fig. 5 (not shown). Another modification comprises a T-shaped box section 9, Fig. 4, with an opening at the top closed by two plates bent to fit inside the hollow head of the T and to provide upstanding webs 15 and horizontal webs 18. A shoe 20, Fig. 6, is secured to a purlin 25 by a hook bolt 27 engaging a slot in the shoe or in an L- section cleat secured to the side of the shoe. In a modification'the shoe is secured to the side of the shoe. In a modification the shoe is secured to the horizontal flange of an angle iron purlin by a clip bolted to the bottom of the shoe. In another modification the bolt may have an elongated head adapted to be passed through a slot in the shoe and turned to engage the side walls of the shoe. Specification 650,543 is referred to.