Composite end connection for steel joists

Claim 1

In a steel joist construction and end connection therefor, the combination comprising, first and second pairs of parallel steel joists, anchor means extending upwardly from the ends of each pair of steel joists, each of said joists having a top chord, a bottom chord and means for securiNg said top and bottom chords in vertically spaced relation, said top chord having a seating angle provided at its ends extending below said top chord and being supported by a beam running in a direction substantially perpendicular to the direction of said steel joists, closure form means of inverted U-shape seated on the top chords of each joist adjacent the ends thereof, each closure form means having a bight portion seated on the top of each top chord and pairs of legs extending from the bight portion to the upper surface of said beam between said joist seat angles, a sealing plate form means disposed between the parallel joists of each pair, each sealing plate form means including flat bottom means supported by said beam and oppositely outward sloping sides supported at its ends by rods extending between parallel ones of said steel joists, said sealing plate having its edges in contact with the legs of said closure form means, whereby when a concrete slab is poured over said concrete form means in the vicinity of said steel joist end connection into encasing relation with said end connection there is obtained composite action therebetween.