Nippon Concrete Industries Co. Ltd.

Nikkai Giken Co., Ltd.

Shigeru Watanabe

Yoshikiyo Fukushima

This invention relates to a method of constructing a continuous wall for supporting earth by continuously setting a number of steel sheet piles, in which a hole is bored with a screw auger, a sheet pile is sunk into the said hole with the boring, a joint of the said sheet pile is engaged with a corresponding joint of the following sheet pile, the said following sheet pile is sunk with the boring of a hole for the said following sheet pile with the said screw auger, and these operations are repeated; and further into the said holes concrete is placed or concrete piles are sunk as required.

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Shigeru Watanabe