Examveda

Which index measures the roughness of a joint surface?

A. Joint Roughness Coefficient (JRC)

B. Joint Wall Compressive Strength

C. GSI

D. Slake Durability Index

Answer: Option A

Solution (By Examveda Team)

Joint Roughness Coefficient (JRC) quantifies the irregularity of a joint surface, affecting shear strength of rock joints.

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