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 m3
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 m3
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 m3
Circular Column, Volume = πr2 h= 3.141256 X (0.15)2 X 5 = 0.35 m3
Concrete Ingredients Calculation
For Cement, Sand and Coarse Aggregate.
This is a Volumetric Calculation.
Assuming we need 2 m3 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 m3
Density of Cement = 1440 kg/ m3 = 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 m3
Coarse Aggregate = (Coarse Aggregate Part / Concrete Parts ) * Concrete Volume
= (3/5.5) * 2 = 1.09 m3
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 m3 = 0.16362 m3
Required Amount of Water = 0.16362 X 1000 = 163.62 litres
Therefore, we need 10.5 bags of cement, 0.5454 m3 of sand, 1.09 m3 of Coarse aggregates and 163.62 litres of water.
Concrete Ingredients Calculator
Hope you enjoyed the content.
Happy Learning 🙂