Plaster Calculator

  1. Plaster Calculator  

Plastering covers the rough surfaces of walls, columns, ceilings, and other building components with a thin coat of plaster to make the surface smooth and durable. 

Plastering on the externally exposed surface is called rendering. Generally, cement plaster and lime plaster are used for plastering work.

Required Plastering Area = 10 x 10 = 100 m² or Square Metre

Plastering thickness = 12 mm

Required volume of Cement Mortar = plastering area x plastering thickness = 100 x 0.012 = 1.2 m³

Increase the volume by 55% to get a dry volume mix.

Cement Mortar Ratio = 1:3 (1 Part Cement : 3 Part Sand)

So total part of mortar = 1+3 = 4

Therefore,

Required Volume of Cement = 1/4 x 1.55 (Bulkage & Wastage) x Mortar Volume

= 1/4 x 1.55 x 1.5= 0.581 m³

To convert into cement bags

= (0.581 x 1440)/50

= 16.7 Bags

Unit weight of Cement = 1440 Kg/m³    1 bag cement = 50 Kg

Required Sand Volume = 3/4 x 1.55 (Bulkage & Wastage) x Mortar Volume

= 3/4 x 1.55 x 1.5 = 1.74 m³

So the required quantity of material for 100 sqm plastering with mortar thickness 15mm & mix ratio 1:3 is,

Cement = 16.7 Bags

Sand = 1.74 m³

  2. Requirements for Good Plaster Material  

The plaster material should fulfill the following requirements:

a. It should be hard and durable.

b. It should remain on the surface and protect from chemical attacks and weathering actions.

c. It should have good workability.

d. It should have high strength and durability.

e. It should be cheap and should be easily available.

f. It should protect from penetration of nature.

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