Quantity Of Cement & Sand Required For 100 Sq.ft Plastering Work

Cement & Sand Required For 100 Sq.ft Plastering Work:

Plastering is one of the most important works that needs to be done to protect the surface of wall or roof ceiling. In this article, I will discuss quantity of cement and sand required for 100  sq. ft plastering wall (12 mm thickness). After that, you will be able to calculate as per your desired area.

To make my calculation easier, I will convert the feet unit into meter unit.

Area of plaster = 100 sq.ft = 9.29 m²

Thickness of plaster = 12 mm = 0.012 m

Mix ratio of plaster = cement : sand = 1: 4

Volume of plaster = Area of plaster x Thickness of plaster = 9.29 x 0.012 = 0.11 m³

Now we need to add an extra 20% for joint filling, depression and wastage.

Volume of plaster = 0.11 b+ (20×0.11/100) = 0.13 m³

This is wet volume, and we need to find out dry volume. To get dry volume multiply wet volume with 1.35

∴ Dry volume = wet volume x 1.35 = 0.17 m³

Quantity Of Cement:

Cement = ( Dry vol of plaster x cement ratio)/ Total sum of ratio

= 0.17 x 1/5 = 0.03 m³

We know density of cement = 1440kg/m³

∴ Weight of cement = 0.03 x 1440 = 48.96 = 50 kg

1 bag cement contains 50 kg of cement.

Quantity Of Sand:

Sand = Quantity of cement x 4 = 0.03 x4 = 0.12 m³

1 m3 = 35.3147 cubic feet = or cft

∴ Sand required = 0.12 x 35.3147 = 4.23 cft

Summery:

Cement Required =  1 bag

Sand required = 4.23 cft

Also Read

Types Of Plaster Used In Construction

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