| 摘要 |
PROBLEM TO BE SOLVED: To provide lowermost stage laying blocks as plinth stone blocks for preventing occurrence of cracks generated on a front wall of the lowermost stage laying blocks of large-sized laying blocks, in particular the large-sized blocks for vegetation used for a cliff or an embankment of a road side part. SOLUTION: The lowermost stage laying blocks 16 comprise: a rectangular front wall 2 inclined rearward of an upper part; a parallelogram vertical counterfort 3 in a reserve direction from right and left ends of a front wall rear face 5; a triangular vertical intermediate wall 8 extending in the reserve direction from a rear face center of the front wall 2 and separating a bottom side from a bottom board 4 to provide a gap 20; and a rectangular bottom board 4 extending in the reserve direction from the lower end of the front wall 2. The lowermost stage laying blocks 16 are laid as the plinth stone blocks on the lowermost stage of the retaining wall by eliminating a counterfort opening from the right and left counterforts 3 and 3, and a bottom board opening from the bottom board 4 respectively. COPYRIGHT: (C)2005,JPO&NCIPI
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