Document Details |
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| Name of Department/Committee : | CED 48 | ||||
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| Document Number : | CED 48 ( 25742) | ||||
| Document Title [English] : | Quantitative Classification Systems of Rock Mass — Guidelines: Part 1 Rock Mass Rating RMR for Predicting Engineering Properties | ||||
| Document Title [Hindi] : | शैल संहति का मात्रात्मक वर्गीकरण तंत्र — दिशानिर्देश सिद्धांत: भाग 1 इंजीनियरिंग गुणधर्मो के निर्धारण के लिए शैल संहति रेटिंग (आर एम आर) | ||||
| Document Type : | Revision | ||||
| Language : | English | ||||
| Priority : | 3 | ||||
| ICS Code : | 93.020 | ||||
| Date of Project Approval : | 21-03-2024 | ||||
| Standards to be Revised : |
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| Standards to be Superseded : |
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Classification Details |
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| Group : | Civil Engineering Design and Construction |
| Sub Group : | Foundation, underground structures, soil and rock mechanics |
| Sub Sub Group : | Soil Mechanics and Ground Improvement |
| Aspects : | Code of Practice |
| Risk : | Low |
| Certification : | Not Certifiable |
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| ITCHS Code : | |
| Ministry : |
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| Sustainable development Goals : |
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| Degree of Equivalence : | Indigenous |
| Identical/Equivalent Standards : | |
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| Sl.No. | Synosis Points | |
| 1 | This standard covers the procedure for determining the class of rock mass based on geomechanics classification system, which is also called the Rock Mass Rating (RMR) system. The classification can be used for estimating the unsupported span, the stand-up time and the support pressures of an underground opening. It can also be used for selecting a method of excavation and permanent support system. Further, cohesion, angle of internal friction and elastic modulus of the rock mass can be estimated. Modified RMR can also be used for predicting the ground conditions for tunnelling. | |
Timeline Details |
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Stages |
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| Sl. No. |
Stage | Date of Occurence | Remarks | Circulated to | Files |
| 1 | Generation of Document Number | 21-03-2024 | ------- | ||
| 2 | P-Draft Waived | 29-05-2024 | ------- | ||
| 3 | WC Draft | 29-05-2024 | Duration : 30 Days Submitted for HOD approval Remarks : Rock Mass Rating RMR |
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| 4 | WC Draft | 30-05-2024 | WC approved by HOD |
CEDC | ------- |