# What is the best ratio for RCC slab?

## What is the best ratio for RCC slab?

Generally 1:2:4 and 1:1.5: 3 ratios of RCC are used in construction work. Where cement concrete 1:2:4 is used; it means 1 part of cement 2 parts of fine aggregate/coarse sand and 4 parts of coarse aggregate. This ratio of cement concrete gives high strength of cement concrete and is recommended for following works.

## What is the ratio of RCC concrete?

What is RCC? Why TMT Bar is required in RCC?

Concrete Grade | Proportion of Cement : Sand : Stone pieces | Expected Compressive Strength at 28 days |
---|---|---|

M10 | 1 : 3 : 6 | 10 N/mm2 or 100 Kg/cm2 |

M15 | 1 : 2 : 4 | 15 N/mm2 or 150 Kg/cm2 |

M20 | 1 : 1.5 : 3 | 20 N/mm2 or 200 Kg/cm2 |

M25 | 1 : 1 : 2 | 25 N/mm2 or 250 Kg/cm2 |

**How is RCC ratio calculated?**

The prescribed Nominal Concrete Mix Ratio of M20 grade concrete is 1:1.5:3.

- Cement = 1 Part.
- Sand = 1.5 Part.
- Aggregate = 3 Part.
- Total dry volume of ingredients required = 1.57 cu.m.

### Which grade cement is used for RCC?

43 Grade OPC

Unless a project requires very high strength cement, the use of 43 Grade OPC is generally recommended in general civil construction work such as residential, commercial and industrial structures. It is used in RCC works, preferably where the grade of concrete is up to M-30.

### How much steel and cement is required for a 1000 sq ft RCC house?

3808 Kg of steel ( 207 kg in footing, 1244 kg in column, 713 kg in plinth beam, 219 kg in door beam, 292 kg in roof beam & 1133 Kg in rcc roof slab) are required for construction of 1000 square feet house of low rise residential building of ground floor.

**What is the percentage of steel in RCC?**

Thumb rule for steel in slab = 2% to 4% Minimum quantity of steel required for 1m3 concrete column is 2%, now 2% of 1m3 = 0.02 m3, and we know that 1m3 steel weight is 7850 Kg, so weight of 0.02m3 steel = 0.02 × 7850 = 157 kg, so minimum quantity of steel required for 1m3 concrete column is 157 Kg.

#### What is a strong concrete mix?

Strong Concrete Mix Ratio In making concrete strong, these ingredients should usually be mixed in a ratio of 1:2:3:0.5 to achieve maximum strength. That is 1 part cement, 2 parts sand, 3 parts gravel, and 0.5 part water.

#### What is M20 concrete ratio?

1 : 1.5 : 3

Different types of concrete grades and their uses

Concrete Grade | Mix Ratio (cement : sand : aggregates) | Compressive Strength |
---|---|---|

M15 | 1 : 2 : 4 | 15 MPa |

M20 | 1 : 1.5 : 3 | 20 MPa |

Standard Grade of Concrete | ||

M25 | 1 : 1 : 2 | 25 MPa |

**How do you mix concrete ratios?**

In terms of the ratio for concrete, it depends on what strength you are trying to achieve, but as a general guide a standard concrete mix would be 1 part cement to 2 parts sand to 4 parts aggregates. For foundations, a mix of 1 part cement to 3 parts sand to 6 parts aggregates can be used.

## What is the mix ratio of M20 concrete in RCC?

Concrete mix ratio M20:- it is only ordinary grade of concrete which is used in RCC work for domestic uses for construction of low rise building and concrete mix ratio for m20 is 1:1.5:3, in which one part is cement, 1.5 part is sand and 3 part is aggregate.

## What is the ratio for mixing concrete?

What is the ratio for mixing concrete? One of the best concrete mix ratios is 1 part cement, 3 parts sand, and 3 parts aggregate, this will produce approximately a 3000 psi concrete mix. The strength of this mix ratio is good for most concrete slabs, footings, steps, and foundation walls. Mixing water with the cement, sand,

**What is the minimum grade of concrete used in RCC works?**

The Minimum grade of concrete for Plain Cement Concrete (PCC) is M15 The Minimum grade of concrete for Reinforced Cement Concrete (RCC) is M20 Concrete Grade and Mix Ratio Table As per IS 456:2000, the grades less than M20 should not be used in RCC works

### What is the strength of RCC of a mixture?

The strength of RCC is a function of w/c ratio only for mixture with Vebe time of ~ 15 to 20 sec. range. For drier mix, the strength is more controlled by the moisture-density relationship.