| 摘要 |
PROBLEM TO BE SOLVED: To provide a concrete block capable of not only facilitating the pile-up work of the concrete block, but also abbreviating subsequent reinforcing work. SOLUTION: The chain block is constituted of a block base 1 formed of a square front shape and projecting sections 2 and 3 projected to part of the front. The projecting sections integrally constitute the front decoration sections 21 and 31 provided on the front of the block base and interlocking sections 22 and 32 projected sideways of the end face of the block base 1. The front decoration sections and the interlocking sections are respectively formed in a columnar section with a semi-circular shape and, at the same time, while opposing these semi-circular diameter sides to each other to integrally form, the whole form of the projection section is formed in the shape of a circular column by symmetrizing them with an end edge of the block base as the center line. COPYRIGHT: (C)2005,JPO&NCIPI
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