| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a lid member improved in construction efficiency and reduced in cost, and an assembly and an underground water storage facility using the assembly. <P>SOLUTION: The lid member 30 used for covering an opening of a structure buried underground includes projections 36 each having a surface area defined by a rising wall 361. A plurality of projections 36 are arranged with spaces W37 from one another. A plurality of through-holes 39 penetrate a base part 31 in the thickness direction H and are opened to the surface areas on the other surface side. A lid for the through-hole is detachably mounted to the through-hole 39 on one surface side to cover the through-hole 39 in the mounted state. In the lid member 30, the projections 36 are inserted in second openings in a state of covering a first opening, and the edges of partition parts are fitted into the spaces W37 of the adjacent projections 36. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
