| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an infiltration manhole, capable of forming an infiltration hole with a simple constitution, by making the most use of a shape of an end surface of an adjacent block.SOLUTION: An infiltration manhole 100 is formed by bonding a first block 10 and a second block 20 composed of cylindrical straight walls 12 and 22 as masonry, and an infiltration hole having an opening part is formed in the straight walls 12 and 22 of the respective blocks 10 and 20. A groove 60 having an opening part 62 is formed on one ends 14 and 24 of the straight walls 12 and 22 of at least the first block 10 or the second block 20, and when bonding the respective blocks 10 and 20 as the masonry, an infiltration hole 70 having the opening part 62 is formed between the respective blocks 10 and 20 by the formed groove 14 and the other end surface 17 of the straight wall 22 of the other block 20 adjacent to the block 10 with the formed groove 14.</p> |
