Abstract: This invention involves a composite prefabricated deck panel and method of construction. The panel is comprised of a rectangular frame made of steel channel members, a number of structural steel members (I-beams) extending longitudinally through the frame and a reinforcing steel mesh welded to the structural steel members. A concrete topping slab is cast over the top flanges of the rectangular structural steel frame leaving a portion of the channel members and structural members extending outwardly. This construction develops a composite action between the structural steel members and concrete.Locking holes extend through the structural steel members, to accomodate a locking bar which attaches to a locking loop secured to supporting girders. Liquid grout is then pressure forced into locking holes which hardens to produce a rigid composite structure consisting of the panels and girders.

Abstract: This invention relates to a structure and method of coupling a precast concrete member to a contiguous deck or other objects. The precast concrete member has a partial inwardly flaring longitudinal groove therethrough and sequential coupling rods which extend within the groove. U-shaped deck rods also extend from the deck within the groove sequentially. A locking bar is inserted longitudinally through the groove in locking relationship with the coupling rods and the U-shaped deck rods. Grout is then injected throughout the longitudinal groove and allowed to harden, thus providing a sealed and locked joint.