| 摘要 |
PURPOSE:To improve the strength and to reduce manpower necessary for construction by supporting a plurality of wave breaking pipes through supports in a mold then contacting the opposite ends thereof with the inner face of the mold and placing concrete therein to produce a block thus reducing the number of split of a bank. CONSTITUTION:A wave breaking pipe 6 is manufactured in a factory while a mold 20 is assembled at site, and wood rods 21 are arranged therein as supports for a plurality of wave breaking pipes 6. Here, the wave breaking pipes 6 are inclined to contact a suction port 11 and a delivery port 13 with the inner face of the mold 20, and arranged vertically in plural stages with the interval being adjusted such that a proper opening rate is provided in the end face of a block 5. When the wave breaking pipes 6 are arranged at predetermined positions, not hardened concrete is placed in the mold 20, and when the mold 20 is removed after hardening of concrete, a wave breaking block is produced. Consequently, transportation cost can be reduced, and since reduced number of blocks are simply stacked, the work is facilitated with sufficient strength. |
