| 摘要 |
Each of retaining wall blocks (1) includes a surface portion (2) which is exposed on a front side when a retaining wall is constructed, a back surface portion (3) which is hidden on a back side, and a pair of connecting portions (5,6) which connect the surface portion (2) and the back surface portion (3) with each other at a predetermined distance therebetween, the surface portion (2), the back surface portion (3) and the connecting portions (5,6) are integrally formed into a substantially box-like shape whose top and bottom are opened. The back surface portion (3) is inclined with respect to the surface portion (2) through a predetermined angle such that the back surface portion (3) is lower than the surface portion (2) and a distance between the surface portion (2) and an upper end (15) of the back surface portion (3) is greater than a distance between the surface portion (2) and a lower end (16) of the back surface portion (3). |
