Experimental studies were carried out in order to develop the new structure system using steel and concrete with execution method that is easier than the steel and reinforced concrete (SRC) structures and with earthquake resistant performance that is equivalent to the SRC structures. The new structure was concrete encased steel (SC) structure that it removed the reinforcing bar from the SRC structure and used the welding wire mesh. Following considerations were obtained from the experimental results. Execution method using the wire mesh for the column was easier than that of conventional SRC structure. The equivalent shear strength can expect proposing SC structure using steel cross section equal to SRC structure. Steel cross section of proposing SC structures should be fundamentally enlarged in comparison with the SRC structures, and the steel would bear the flexural capacity. The shear strength of the column in the column-beam frame specimen was dependent on the degree of destruction of the bam-column joint.
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