Certificate In Rock Mechanics Exam Practice Questions - Certificate In Rock Mechanics (South Africa) Exam

Which five basic parameters are evaluated to obtain the basic Rock Mass Rating (RMR89) according to Bieniawski?

UCS, RQD, joint spacing, joint condition, and groundwater condition Point load index, fracture frequency, friction angle, cohesion, and stress factor UCS, stress reduction factor, joint roughness, aperture, and water inflow Rock density, Young's modulus, Poisson's ratio, joint orientation, and RQD

Correct Answer:

UCS, RQD, joint spacing, joint condition, and groundwater condition

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