Rock Mass Rating Calculator
Calculate Rock Mass Rating (RMR) based on Bieniawski's classification system using uniaxial compressive strength, Rock Quality Designation (RQD), joint spacing, joint condition, and groundwater conditions.
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How to use this tool?
- 1 Enter the requested data in the fields above carefully.
- 2 Click the calculate button to process the information instantly.
- 3 Analyze the detailed result and the formula explanation presented below.
- 4 You can print, share, or even embed the calculator on your own site for free.
Unlike traditional static calculators, our tools adapt to specific user needs. They include detailed explanations of the formulas used, ensuring transparency in results. Furthermore, our design is focused on user experience, eliminating distractions and focusing on what really matters: your data and conclusions.
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Frequently Asked Questions
Rock Mass Rating (RMR) is a geomechanical classification system developed by Bieniawski to assess the quality of rock masses for engineering purposes such as tunneling, mining, and slope stability.
RMR uses five parameters: uniaxial compressive strength of intact rock (UCS), Rock Quality Designation (RQD), joint spacing, joint condition, and groundwater conditions.
RMR values range from 0 to 100. Classes: I (81-100) Very good, II (61-80) Good, III (41-60) Fair, IV (21-40) Poor, V (0-20) Very poor.