| 摘要 |
PROBLEM TO BE SOLVED: To produce no error on the height of the surface of a filling layer replacing structure by providing a recess part capable of housing at least a part of a base part constituting a connection jig at a position where the connection jig of a block is arranged. SOLUTION: The depth of the recess part of a block material is made a half of thickness of a base part. The block material is constituted of polystyrene foam material whose density does not exceed 12-30 kg/m3. Six semi-circular recess parts 1a-1f are formed on the upper face of the block material, i.e., on a face mounting a next stage block material. In addition, six semi-circular recess parts 2a-2f are formed at the same position as the recess parts 1a-1f of the upper face even on the lower face of the block material. The recess parts 1a-1f of the upper face side of a certain block material and the recess parts 2a-2f of the lower face side of the next stage positioned block house the base part of the connection jig jointly. Thereby no error produces on the outer shape size of a filling layer replacing structure, and further on the height of the surface of the filling layer replacing structure. |
