Abstract: A steel and concrete secondary truss type framing member, steel deck concrete floor construction in which the top chord of the truss is formed in the shape of a modified "I" section having an upper flange, web and lower flange with a generally flat upper bearing surface of greater dimension than the upper flange for supporting steel decking. The upper flange and web of the top chord are totally embedded in the concrete to cause the concrete floor and steel truss to function together structurally as a composite system. The top chord of the truss acts as a continuous shear connector thus enabling the top chord to perform a multi-purpose function. Additionally, the top chord web may be either a solid section or contain perforations.

Abstract: A steel primary framing member, or truss, and concrete floor structure in which the top chord of the truss, regardless of cross-sectional configuration, is totally or at least partially embedded in the concrete to cause the concrete floor and steel truss to function together structurally as a composite system. The upper chord of the truss acts as a continuous or substantially continuous shear connector thus enabling the top chord to perform a multi-purpose function. Additionally, the top chord may be of any configuration and may be either a solid piece or contain perforations.