This paper deals with the strength and ductility of very shallow embedded type steel column-to-footing connection subjected to cyclic reversed bending moments as well as column and vertical brace axial forces. Experimental investigation was focussed to inspect the effect on the reinforcement of the additional concrete cover upon the base plate to improve seismic resistant capability of the connection. The result showed that the connection embedded to about 0. 6 times the steel column depth exhibits the fairly well ductility, and thus the additional concrete cover contributes to stiffen the exposed column-to-footing connection, together with the longitudinal reinforcement of the concrete column stub arranged with proper separations around the base plate. An analytical model has been proposed to estimate the ultimate strength and rigidity of the connection under the complex loading conditions which simulate seismic behavior of such connection in the large scale industrial steel structure.
