SYMPOSIA PAPER Published: 01 January 1970

Suggested Method of Test for In Situ Shear Strength of Rock


The desirability of knowing the in place shearing resistance of rock under load has been recognized for years. This has led to many attempts to make in situ block shear tests with various degrees of success. Three types of tests have been most often attempted: single-frame block shear with parallel loads, single-frame block shear with inclined loads, and double-frame block shear with parallel loads. Of these the latter seems to have the most possibility of success. A suggested in situ shear test procedure is included with the paper.

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Dodds, RK
Foundation Sciences Co., Portland, Ore
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Developed by Committee: D18
Pages: 618–628
DOI: 10.1520/STP38562S
ISBN-EB: 978-0-8031-5570-1
ISBN-13: 978-0-8031-0051-0