E - Fixed Constructions – 04 – B
Patent
E - Fixed Constructions
04
B
72/100, 72/91
E04B 5/16 (2006.01) E04B 5/29 (2006.01) E04B 5/40 (2006.01)
Patent
CA 1062931
ABSTRACT OF THE DISCLOSURE In a composite action open-web steel joist, comprising supporting beams and girders, and reinforced concrete slab interconnection, it is known to have upper apex portions of the steel joist webbing protrude through the upper chord members of the joist and through apertures provided in the sheet metal formwork placed over such joists prior to the pouring of the concrete slab. In this invention, the improvement relates to a continuous round rod secured near the apex of each projecting web member parallel to the longitudinal axis of the joist and a reinforcing wire mesh draped between said rods, thus permitting greater spacing between said joists, whereby said protruding apex portions, said rods and said draped wire mesh will be encased within the slab to act as shear interconnection and reinforcement devices therein, to secure the joist and formwork together, to enhance the locking of the concrete slab to the protruding joist apex portions, and to the supporting beams through the joist end connection welded to the beam or girder, and to reinforce said concrete slab. This improvement makes optional the use of wedge members forced between such protruding joist apex portions.
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