. A granite rock formation consists of three sets of discontinuities where the average joint spacing is 320 mm. The RQD of the rock cores obtained from the boreholes is 68%. The joint surfaces are rough, stepped and unweathered, with no separation. The average uniaxial compressive strength of the intact rock cores is 200 MPa. The surface of excavation is found to be damp. Determine the RMR value, disregarding the rating adjustment for discontinuity orientation. What values would you use for cohesion and friction angle in analysis of the rock mass?

. A granite rock formation consists of three sets of discontinuities where the average joint spacing is 320 mm. The RQD of the rock cores obtained from the boreholes is 68%. The joint surfaces are rough, stepped and unweathered, with no separation. The average uniaxial compressive strength of the intact rock cores is 200 MPa. The surface of excavation is found to be damp. Determine the RMR value, disregarding the rating adjustment for discontinuity orientation. What values would you use for cohesion and friction angle in analysis of the rock mass?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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