| Placing Conditions | Degree of Workability | Slump (mm) |
| Blinding concrete; | Very low | As Per Is 456, P-17, Cl 7.1.1 |
| Shallow sections; | ||
| Pavements using pavers | ||
| Mass concrete; | Low | 25mm -75 mm |
| Lightly reinforced | ||
| sections in slabs, | ||
| beams, walls, columns; | ||
| Floors; | ||
| Hand placed pavements; | ||
| Canal lining; | ||
| Strip footings | Medium | 50mm -100 mm |
| Heavily reinforced | ||
| sections in slabs, | ||
| beams, walls, columns; | 75mm -100 mm | |
| Slipform work; | ||
| Pumped concrete | ||
| Trench fill; | High | 100 mm -150 mm |
| In-situ piling | ||
| Tremie concrete | Very high | As Per Is 456, P-17, Cl 7.1.2 |
| Minimum Grade of Concrete. | Maximum Free Water- Cement Ratio | Minimum Cement Content kg/m3 |
| Plain Concrete | ||
| - | 0.60 | 220 |
| M 15 | 0.60 | 240 |
| M 20 | 0.50 | 250 |
| M 20 | 0.45 | 260 |
| M 25 | 0.40 | 280 |
| Reinforced Concrete | ||
| M 20 | 0.55 | 300 |
| M 25 | 0.50 | 300 |
| M 30 | 0.45 | 320 |
| M 35 | 0.45 | 340 |
| M 40 | 0.40 | 360 |
| Sr No. | Nominal Maximum Aggregate Sizemm | Adjustments to Minimum Cement Contents in as per above tablekg/m3 |
| 1 | 10 | + 40 |
| 2 | 20 | 0 |
| 3 | 40 | - 30 |
| Grade of concrete | Assumed Standard Deviation N/mm2 |
| M 10 | 3.5 |
| M 15 | |
| M 20 | 4.0 |
| M 25 | |
| M 30 | 5.0 |
| M 35 | |
| M 40 | |
| M 45 | |
| M 50 |
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