| 摘要 |
PURPOSE: A block is provided to obtain excellent workability and to maintain good planarity of a joint of the adjacent blocks when the block is constructed on a sand cushion layer. CONSTITUTION: A block comprises a convex unit(17) formed on one side surface and a concave unit(18) formed on the other side surface. The convex unit and the concave unit individually comprise upper outline units(17b,18b) and lower outline units(17c,18c). The upper outline units of the convex unit and the concave unit are formed in a front lower direction towards an end of the convex unit and a bottom unit of the concave unit. The lower outline units of the convex unit and the concave unit comprise a linear shape unit located on a same line and at a same height. An upper side surface unit on which the convex unit is formed is formed in order to be the surface retreated from a protrusion direction of the convex unit more than a lower side surface unit. A hanging unit is formed on one side surface of the block in order to hang hands. |
