| 摘要 |
PURPOSE:To raise the earthquake proofness of a housing by a method in which the ground is excavated, a sand layer of an adequate thickness is formed, cobble stones are laid on the sand layer, and the plate and strip foundation of concrete are integrally formed over the cobble stones. CONSTITUTION:The ground B is excavated to a depth of 70-100cm for a slightly wider area than the floor area of housings A, and sand 2 is laid in a thickness of 20-30cm. Cobble stones 3 are placed in a thickness of 10-15cm on the sand 2, and base concrete 4 of a thickness of 10-15cm is formed on the cobble stones 3. Afterwards, strip foundation 5 of a height of about 30cm from the ground's surface is formed on the concrete 4. |
