CONSTRUCTION METHOD OF BASEMENT IN EXISTING HOUSE

摘要

PROBLEM TO BE SOLVED: To provide a method for constructing a basement in an existing house inexpensively and efficiently.SOLUTION: Excavating means and surplus soil discharge means are provided in an existing house, existing base concrete is chipped and removed, a skeleton caisson with a leading blade is formed inside the existing house, and the undersurface inside the skeleton caisson is excavated so that the skeleton caisson with a leading blade is made to sink by its own weight to a predetermined place. A basement is constructed by leveling the bottom surface of the place after the caisson has sunk and forming a pressure-proof board concrete and bars in the upper part of the basement.