How to calculate quantity of Cement and Sand in Plaster
How to calculate quantity of Cement and Sand in Plaster? Ex: Area of plaster = 100 ft × 100 ft Thickness of plaster = 12mm Step 1) find out volume of plaster: (Need to all units that is "ft" and "mm" convert into "m" ) 1000mm = 1m So that; 12mm = 0.012m 3.28ft = 1m So that; 100ft = 30.49m Volume of plaster = 30.49 × 30.49 × 0.012 = 11.15 m³ Step 2) Convert plaster volume wet to dry: Take 33% Dry vol = 11.15 × 1.33 = 14.83 m³ Step 3) Consider wastage: Take 5% Total dry vol = 14.83 × 1.05 = 15.57 m³ Step 4) find out Cement and sand required: Take; Cement : sand 1 : 6 Cement req = 1/(1+6) × 15.57 = 2.22 m³ Need to cement in bags