How much cement use in 1sqmt Plastering?

Input : 1. Thickness of plastering 12mm (0.012m). 2. Cement sand ratio 1:6

Suppose we require to plaster 100sqm

Then 100x0.012=1.2m3 of mortar is required

For 1:6 ratio,

Cement requirement will be= 1.2 x 1/7 (one part of cement in mortar) = 0.1714m3 cement,

Since cement goes in the voids of sand we nead 20% extra material = 1.20 x 0.1714 = 0.2056 cum.

Now add 20% extra to cover uneven surface of brick work = 1.2 x 0.2056 = 0.2468 cu. m of cement.

Now for 50 kg of cement = 0.0345cum, therefore = 0.2468 / 0.0345 = 7 bag of cement.

Sandrequirement will be= 1.2 x 6/7 (sixth part of sand in mortar) = 1.0285 m3 sand

Now add 20% extra to cover uneven surface of brick work = 1.2 x

1.0285

= 1.2343 cu. m of sand.

Convert sand in MT multiply is by 1.602 (specific gravity) 1.2343 x 1.602 = 1.9773 MT