How to calculate Number of bricks, cement and Sand for brickwork?
Any construction works requires a pre estimation of the quantities of the materials to be used, which is necessary to predict the cost and availability of materials.
So, With brickwork calculation formula we will estimate how much quantity of the Bricks, Cement and Sand are Required.
Lets Consider,
Standard Size of a Brick = 190 x 90 x 90 mm
Mortar Thickness = 10 mm
Brickwork Volume = 1 x 1 x 1 = 1 Cu.m
Number of Bricks
Step 1:
Lets find volume of a single Brick without mortar
Volume of Brick without mortar = 0.19 x .09 x .09
= 0.001539 Cu.m
Step 2:
Now find the volume of single brick with mortar
Volume of Brick without mortar = 0.2 x 0.1 x 0.1
= 0.002 Cu.m
Step 3:
Now lets find the number of bricks required for the required brickwork volume.
Wall size = 1 cu.m
Number of bricks with mortar =1/0.002
= 500 No’s.
Related : Brickwork Check List
Quantity of Mortar
Total Quantity of Mortar = Volume of wall -(Volume of brick without mortar x Number of bricks required)
= 1 – ( 0.001539 x 500 )
= 1 – 0.7695
= 0.2305 Cu.m.
Now lets find the quantity of mortar i.e Cement and Sand with ratio of 1: 6
Mortar Quantity in wet Condition = 0.2305 Cu.m
Mortar Quantity in dry Condition = 0.2305 x 1.33
= 0.306565 Cu.m.
Cement Calculation
Cement Quantity = Volume of Mortar x (Ratio of cement / Sum of the ratio)
= 0.306565 x (1/7) = 0.0438 cu.m
Density of Cement = 1440 kg/m3
No of Bags = 0.0438 x 1440 = 63.06 kg
Sand Calculation
Volume = Volume of Mortar x (Ratio of cement / Sum of the ratio)
= 0.306565 x (6/7)
= 0.2627 Cu.m.
Cubic Feet = 0.2627 x 35.31 = 9.27841
Total Material quantity required for 1 cu.m wall brick work
No’s Of Brick = 500 No’s
Cement Quantity = 63 kg
Sand Quantity = 0.2627 Cu.m
Also Read : What is plaster? | Methods | Defects | Materials