Our detailed site investigation on the war damage reconstruction of the Tokyo Station, it was revealed that a lot of “Pre-Con” components were used. “Pre-Con” is the precasted concrete truss construction system developed during and after the war. In this paper, the range and the method of “Pre-Con”’s use in the war damage reconstruction are made clear. In addition, it was assumed that it was clear about introduction process and engineer who concerned with introduction.
