PURPOSE: To construct bodies in various shapes by using a wood form material when a body, such as a wall and a floor, is constructed, eliminates a finish work for the surface of a constructed wall, shorten a term of works and enables construction of a body of high quality.

CONSTITUTION: PC forms 10.1-10.n formed of a concrete sheet precast on a sheet a surface 10.a of which is finished in a smooth state are assembled by means of a coupling metal 13, and a wall in which concrete is placed is constructed in a concrete placing space 40. Only by removing batter materials 33 and 34 after construction, a wall the surface of which is finished is completed by using the PC forms 10.1-10.n serving as a finish material.