# Quantity of Cement and Sand Calculation in Mortar

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## Quantity of Cement and Sand Calculation in Mortar

Quantity of cement mortar is required for rate analysis of brickwork and plaster or estimation of masonry work for a building or structure. Cement mortar is used in various 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:

For the calculation of cement mortar, let us assume that we use 1m3 of cement mortar. Procedure for calculation is: 1. Calculate the dry volume of materials required for 1m3 cement mortar. Considering voids in sands, we assume that materials consists of 60% voids. That is, for 1m3 of wet cement mortar, 1.6m3 of materials are required. 2. Now we calculate the volume of materials used in cement mortar based on its proportions. Letβs say, the proportion of cement and sand in mortar is 1:X, where X is the volume of sand required. Then, the volume of sand required for 1:X proportion of 1m3 cement mortar will be 3. Volume of cement will be calculated as: Since the volume of 1 bag of cement is 0.0347 m3, so the number of bag of cement will be calculated as: Example: For cement mortar of 1:6, the quantity calculated will be as below: Sand quantity: Quantity of cement (in bags): Volume of cement = There number of bags required = = 6.58 bags.