Page 318 - Engineering Rock Mass Classification_ Tunnelling, Foundations and Landslides

India and Bhutan

Shear strength parameters

ck to rock interface Concrete to rock interface

es Residual values Peak values Residual values
f
cr (MPa) fr c (MPa) f cr (MPa) fr

2.0 0.58 40.0 — — — —
— — — 0.13 53.3 0.00 49.5
— — — 0.10 56.5 0.00 55.1

8.0 0.15 60.0 0.25 58.5 0.22 45.0
9.0 0.60 58.0 — — — —

— — — 0.44 59.0 0.00 51.0
— — — 0.40 64.0 0.00 64.0
— — 0.16 41.0 0.10 40.0
6.0
0.01 69.0 0.25 66.0 0.01 62.0
0.0 0.13 50.3 — — — —
7.5 — — 0.12 59.0 0.01 46.0
—