Question

cement required 12 mm thick plastring with cement 1:4 100 square will be
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Answer 1

Answer:

order to calculate the required quantity of cement, sand and water for plastering we have to follow the following 3 simple steps.

Step 1:- Assumptions

Area of Plaster = 1 m²

Thickness of plaster = 12 mm =0.012 m

Mix Ratio → 1:4

Step 2:- Volume of Plaster

∵ Volume of plaster = Area of plaster x Thickness of plaster

Volume of plaster = 1 x 0.012=0.012 m³

Add 20% extra Quantity for Filling of joints, Depressions & Wastage

∴Volume of plaster = 0.012+ [ (20x0.012) /100 ] =0.0144 m³

Dry volume of plaster = Wet volume x 1.35

Dry Volume = 0.0144 x 1.35 m = 0.01944 m³

Step3:- Quantity of Cement

Quantity of Cement = (Dry Volume of plaster x Cement ratio) / (Sum of the ratio)

Quantity of cement = (0.01944 x 1) /(1+4)= 0.003888 m³

∵ Density of Cement = 1440kg/m³

Weight of Cement = 1440 x 0.003888 = 5.5987 Kg

∵ 1 bag of cement contains 50 kg of cement

Number of bags = 5.5987 Kg/50 = 0.112 No’s

Hope it helps

Answer 2

Explanation:

from which class this question. thanks