| 摘要 |
PURPOSE:To construct a safe breakwater by a method in which blocks having a plurality of projections extended from both sides of its column body by biasing them positionally are coupled with each other to cover the base of a breakwater. CONSTITUTION:A plurality of side projections 2 and 5 are extended from both sides 3 and 4 of a column body 1 comprising as bottom face, an upper face, and sides 3 and 4. In the place where the projection 2 is extended from the side 3, the extension of the projection 5 from the side 4 is avoided by mutually coupling concrete blocks 15 to cover the slope. The scattering of the blocks by waves can thus be prevented. A breakwater of large angle of inclination can thus be constructed.
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