| 摘要 |
PROBLEM TO BE SOLVED: To provide a safe and efficient method of constructing a concrete slab through a reverse driving process, while eliminating the need for the work of placing and shaving off a concrete subslab under the concrete slab. SOLUTION: Subsoil is excavated to a certain depth by a machine, after which the level of the surface 1a of the subsoil 1 is adjusted as plowing is carried out by manual operation, etc. Using the subsoil 1 as a form, slab concrete 2 is placed on the surface 1a, and once the slab concrete 2 is set, the subsoil 1 is dug and removed to construct the concrete slab.
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