Quantity of Cement and Sand Calculation in Mortar m3

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A quantity of cement mortar is required for a building or structure to analyze the rate of brickwork and plaster or to estimate the masonry work. Cement mortar is used in different proportions,  i.e. 1:1, 1:2, 1:3, 1:4, 1:6, 1:8 etc.

Calculation of quantity of cement mortar in brickwork and plaster:

Let us assume that we use 1m3 of cement mortar for the calculation of cement mortar. The calculation method is:

1. Calculate the amount of dry material required for 1m3 cement mortar. Considering the voids in the sands we assume the material is consists of voids of 60%. That is, 1.6m3 of materials are needed for 1m3 of wet cement mortar.

2. Now, based on its proportions, we calculate the volume of materials used in cement mortar.

Let's say, the cement and sand ratio is 1:X, where X is the required sand volume.

Then, the volume of sand required for 1:X proportion of 1m3 cement mortar will be

3. The volume of cement will be calculated as:

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Since the volume of 1 bag of cement is 0.0347 m3, so the number of a bag of cement will be calculated as:

For cement mortar of 1:6, the quantity calculated will be as below:

Sand Quantity:

Quantity of cement (in bags):

The volume of cement = 

There number of bags required =  = 6.58 bags.

Next article= How to find cement and sand quantity in the mortar in Ft3

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