In light of the global environment, the authors proposed a building system comprising steel and timber (Hereafter referred to as CSTS), which consist of rolled section steels and timbers. A design method of the CSTS uses the concept of a damage controlled structure and its mechanical model is established based on the previous tests. In this study, we propose floor structure adapting for the CSTS using cross laminated timber. In-plane shear test of the joint which are consisted of unheaded studs or bolts for joint of the CSTS beam and floor structure is conducted. Structural performances of joint of the CSTS beam and floor structure are evaluated. The findings obtained from tests indicate that the joint of the CSTS beam and the floor structure has a high stiffness and strength.
