Measuring and testing – Frictional resistance – coefficient or characteristics
Patent
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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