Composite steel joist

A steel joist system for use in association with a concrete slab to form a composite steel joist system comprising:

• a plurality of steel joist assemblies each comprising
• a steel joists each having a top portion with a generally planar top surface and a planar web generally orthogonal to the generally planar top surface;
• a pair of end connectors, each attached at each end of the steel joist each having a strut and a diagonal member, the strut having a generally planar bottom surface which is attached to a portion of the generally planar top surface of the steel joist and the diagonal member being attached at one end thereof to the strut and at the other end thereof to a portion of the planar web of the steel joist and at least one of the end connectors has at least one hole in the strut configured to receive a reinforcing bar;
• and
• at least one reinforcing bar received the at least one hole such that it is parallel to the plane defined by the top portion of the steel joist;
• and
• a steel deck attached to the plurality of steel joist assemblies.

A composite steel joist assembly comprising:

• a plurality of steel joists, each joist having a top portion with a generally planar top surface and a planar web generally orthogonal to the generally planar top surface;
• each joist having a pair of end connectors, each attached at each end of the steel joist and extending outwardly therefrom;
• a dovetail deck attached to the plurality of steel joists, wherein the cross section of extruded shapes expand outwardly from the plurality of steel joists such that the cross-section generally forms dovetail shapes;
• and
• a concrete slab poured into and around the dovetail deck,
• wherein each end connector has a strut and a diagonal member, the strut has a generally planar bottom surface which is attached to a portion of the generally planar top surface of the steel joist and the diagonal member is attached at one end thereof to the strut and at the other end thereof to a portion of the planar web of the steel joist.