ASTM D4729-19

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Standard Test Method for In Situ Stress and Modulus of Deformation Using the Flat Jack Method
standard by ASTM International, 06/01/2019

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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.

Product Details

Published:
06/01/2019
Number of Pages:
10
File Size:
1 file , 250 KB