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1.1 The flat jack test measures the natural or altered in situ stress at a rock surface either for a surface outcrop or an underground excavation surface. The modulus of deformation and the long-term deformational properties (creep) may also be evaluated for the applied stress range, however long-term creep is not covered by this method.
Author | ASTM |
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Editor | ASTM |
Document type | Standard |
Format | File |
ICS | 93.020 : Earthworks. Excavations. Foundation construction. Underground works
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Number of pages | 10 |
Replace | ASTM D4729-08 |
Year | 2019 |
Document history | ASTM D4729-08 ASTM D4729-04 ASTM D4729-87(1997) |
Country | USA |
Keyword | ASTM 4729;ASTM D4729;ASTM D4729;10.1520/D4729-19 |