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Explain CBRI method.
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written 9.4 years ago by
teamques10
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CBRI method
- To form the basis for calculation of materials and labour, CBRI has recommended the following formulae which after a study of the specifications have been selected for this analysis.
- The table as given below is for buildings of different shapes and plinth areas varying from 30 to 300 sq. these are the average constant.
This information is useful for preparation of building cost index, preplanning of materials and labour requirement in a building project. Equations for Materials & Labour requirement for structure in Four-storeyed (RCC Frames Building),
A=Plinth area in sq.
| Materials | Equations | Labours (in days) | Equations |
|---|---|---|---|
| Cement(tones) | 0.0204A- 0.014 | Mason | 0.023A |
| Sand (cu.m.) | 0.036A | Carpenter | 0.05A |
| Coarse aggregate (cu.m.) | 0.071A-0.01 | Blacksmith | -1.6+0.1A-0.0003A2 |
| Steel (kg) | -171+10.46A-0.041A2 | Mazdoor | 0.343A |
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