How to calculate the cement, sand quantity for plastering

How to calculate the cement, sand quantity for plastering


In this construction video tutorial provides some step-by-step guidelines to how to calculate the cement sand quantity for plastering.
Let us suppose, 
Mortar ratio = 1:6 where 1 is cement and 6 part is sand.
Plaster thickness = 12 mm = 0.012 m 
Cement density = 1440 kg/m3 
1 m3 = 35.3147 ft3 
Suggested Plaster Thickness 
12 mm for internal walls or brick wall plain surface
15 mm for 4” or 9” brick wall rough surface 20 mm for two plaster layers normally utilized for external walls 
Mortar Wet volume = 1 x 1 x 0.012 = 0.012 m3 
Mortar Dry volume = 0.012 x 1.30 = 0.0156 m3
 Mortar Dry volume (sand + cement) = 30 – 35 % greater than wet volume = wet volume x 1.30
Concrete Dry volume (aggregate + sand + cement) = wet volume x 1.54
As we know that mortar ratio = 1:6, from which 1 + 6 = 7 = sum of ratio 
Amount of cement in plaster = 1/7 x 0.0156 x 1440 = 3.21 kg 
Also in bags = 3.21/50 = 0.064 bag = approximately 1 bag 
Amount of sand in plaster = 6/7 x 0.0156 = 0.0133 m3 
Sand quantity in cubic feet = 0.0133 x 35.3147 = 0.47 ft3
For more information, go through the following tutorial.

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