| 摘要 |
PROBLEM TO BE SOLVED: To provide a block with high buckling resistance, which hardly falls even when a non-uniform load is applied to a surface subjected to a loading surface.SOLUTION: A block of the present invention is a cylindrical body that is made of a synthetic resin belt-like material 11. The belt-like material 11 has a force for developing the cylindrical body into an approximately planar belt-like body. For example, a joint 12 for detachably joining the vicinity of one longitudinal end of the belt-like material 11 and the other part is provided. In use, the vicinity of the one longitudinal end of the belt-like material 11 and the other part are joined together so that the cylindrical body can be formed. In disuse, they are disjoined from each other so that the belt-like material can be formed into an approximately planar belt-like shape.SELECTED DRAWING: Figure 2 |
