We have already discussed Nominal Mix of Concrete and Mix Proportions.

If you have missed that please go ahead and read that. We will wait for you.

It’s time for some calculations.

In this post, we are going to explain “How to Calculate Concrete Volume and its ingredients?”

# How to Calculate Concrete Volume?

If it is a volume, then we know there must be 3 dimensions, Length, Height, Width or Breadth.

We covered some Basic Surface Area and Volume Formulas.

For **Slab**, If we need to calculate the concrete volume,

Volume = Length X Breadth X Width/Thickness = 5 X 3 X 0.125 = 3.75 m^{3}

For **Beam**, If we need to calculate the concrete volume,

Volume = Length X Breadth X Width = 5 X 0.6 X 0.3 = 3.75 m^{3}

For **Column**, If we need to calculate a concrete volume for the below Columns,

**Rectangular Column**, Volume = Height X Breadth X Width = 5 X 0.6 X 0.3 = 0.9 m^{3}

**Circular Column**, Volume = πr^{2} h= 3.141256 X (0.15)^{2} X 5 = 0.35 m^{3}

## Concrete Ingredients Calculation

For Cement, Sand and Coarse Aggregate.

This is a Volumetric Calculation.

Assuming we need 2 m^{3} of concrete for M20 Concrete Mix, (Mix Ratio, M20 = 1 : 1.5 : 3)

Total Part of the Concrete = 1+1.5+3 = 5.5 Parts

Therefore, **Cement Quantity** = (Cement Part / Concrete Parts ) * Concrete Volume

= (1/5.5)* Concrete Volume = (1/5.5)*2 = 0.3636 m^{3}

Density of Cement = 1440 kg/ m^{3} = 0.3636 X 1440 = 523 kg = **10.5 Approx. Bags **

**Sand Quantity** = ( Sand Part / Concrete Parts ) * Concrete Volume = (1.5/5.5) * 2 = **0.5454 m ^{3}**

**Coarse Aggregate** = (Coarse Aggregate Part / Concrete Parts ) * Concrete Volume

= (3/5.5) * 2 = **1.09 m ^{3}**

**Water Cement Ratio**

According to IS 10262 (2009), Assuming Water-Cement Ratio for the Concrete as 0.45

Required Amount of Water = W/C Ratio X Cement Volume

Therefore, Water = 0.45 X 0.3636 m^{3 }= 0.16362 m^{3}

Unit Weight of Water = 1000 litres/m^{3}

**Required Amount of Water** = 0.16362 X 1000 = **163.62 litres**

Therefore, we need 10.5 bags of cement, 0.5454 m^{3} of sand, 1.09 m^{3} of Coarse aggregates and 163.62 litres of water.

## Concrete Ingredients Calculator

Hope you enjoyed the content.

Happy Learning 🙂