Classification System

Uniaxial Compressive Strength (UCS)

Rock Quality Designation (RQD)

Spacing of Discontinuities

Condition of Discontinuities

Groundwater Conditions

Rock Quality Designation (RQD %)

Joint Set Number (Jn)

Joint Roughness Number (Jr)

Joint Alteration Number (Ja)

Joint Water Reduction Factor (Jw)

Stress Reduction Factor (SRF)

Show Formulae

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