Method of and apparatus for measuring in situ, the sub-surface b

Details Method of and apparatus for measuring in situ, the sub-surface b Method of and apparatus for measuring in situ, the sub-surface b

1981-09-24

1983-08-30

Swisher, S. Clement

Measuring and testing

Frictional resistance, coefficient or characteristics

73 84, G01N 1902, G01N 342

Patent

active

044009704

ABSTRACT:
The invention disclosed includes a method of and apparatus for measuring the sub-surface bearing strength of soil and the frictional resistance of the soil to movement of a pile through the soil. A probe is used for this purpose that includes three relatively movable members, an inner plunger with a flat face, an inner tubular member, and an outer tubular member. By measuring the force required to move the members through the soil together and separately the bearing capacity and the skin friction of the soil can be calculated.

REFERENCES:
patent: 2640351 (1953-06-01), Jourdain
patent: 3906781 (1975-09-01), Vlasblom
patent: 3968682 (1976-07-01), Pellissier
patent: 3988923 (1976-11-01), Elmiger
patent: 3999424 (1976-12-01), Pellisier
patent: 4332160 (1982-06-01), Baragar

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