How to Calculate Cement, Sand Quantity fo plastering ?

There are different grades of mortar that can be used for plastering of masonry structural members such as in CM 1:2, 1:4, 1:6, 1:8 etc. Cement Mortar in ratio 1:6 is generally used for plastering work.

Area of Plaster = 1 m * 74 m

Plaster Thickness = 10 mm

Volume of mortar = 74 m ² x 0.010 m    = .740 m ³

Ratio for Plaster Taken is                             = 1 : 6

Sum of ratio is                                                   = 7

Calculation for Cement Volume

Dry Volume of Mortar = .740 x 1.35 =1 m³

Cement= (1/7) x 1 = 0.14 m³  

Density of Cement is 1440/m³

               = 0.14 x 1440              =  201 kg

               We know each bag of cement is 50 kg

               = (201/50)        =  4.02 Bags

Calculation for Sand Volume

Sand = (6/7) x 1     = 0.85 m³

Density of Sand is 1450/m³

               = 0.85 x 1450                = 1232.5 kg

Now we find how many CFT (Cubic feet) Required

 As we know that 1m³ = 35.31 CFT

               = 0.85*35.31

               = 30.01 CFT (Cubic Feet)