Rock Mass Rating RMR Geomechanics Calculator
Calculate Bieniawski's Rock Mass Rating ($RMR_{89}$), rock classification, unsupported roof stand-up time, and primary ground support recommendations.
Bieniawski 1989 Rating Parameters
Parameter A1 (0 - 15 pts)
Parameter A2 (3 - 20 pts)
Parameter A3 (5 - 20 pts)
RMR Classification & Support
Adjusted RMR Score
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Stand-Up Time
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Rock Cohesion
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Friction Angle
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Modulus Emass
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Recommended Ground Support
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