Method of and apparatus for measuring in situ, the sub-surface bearing strength, the skin friction, and other sub-surface characteristics of the soil
US4400970A · kind A · utility
25Cited by
6References
6Claims
0Family size
Inventor
Key dates
| Filing date | Sep 24, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Sep 24, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D1/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.