Calculation of bricks quantities in 1 CFT Wall & in a room

In this short construction article, you will get some quick tricks to measure the numbers of bricks in a masonry wall per cubic foot.

The calculation is made on the basis of the following dimensions :-

Length (L) of bricks in CFT is taken as 0.75 ft.
Width (W) of bricks in CFT is taken as 5 inches or 0.41 ft.
Thickness (T) of Bricks in CFT is taken as 3” or 0.25 ft.

To determine the volume of brick in 1 CFT, multiply Length, Width and Height.

Now, take volume as V.

So, V = L x W x T = 0.75 x 0.41 x 0.25 = 0.076 ft³

Therefore, total numbers of brick in 1 CFT = 1/0.076 = 13.15 bricks

Suppose, the mortar comprises of 10% area.

So, 13.15 x 10/100 = 1.315

So, the total numbers of bricks without mortar = 11.835

Suppose, 5% wastage is occurred in bricks.

So, 11.835 x 5/100 = 0.591

Therefore, total numbers of bricks in 1 CFT = 11.835 + 0.591 = 12.426 or 12.5 (approx)

So, in 1 CFT, the numbers of bricks required = 12.5

Now, calculate the numbers of bricks in a room with area 10 ft x 5 ft.

So, the area of the room = 10 x 5 ft.

As there are two walls inside the room, so it is required to determine the volume for both the walls.

For Wall (1)

Length (L) of one side wall is taken as 10 ft
Width (W) of bricks is taken as 0.25 ft
Height (H) of the wall is taken as 10 ft
Volume of wall in cft = L x W x H = 10 x 0.25 x 10 = 25 ft³
For both side= 2 x 25 = 50 ft³

For Wall (2)

Length (L) of second wall is taken as 5 ft
Width (W) of bricks is taken as 0.25 ft
Height (H) of the wall is taken as 10 ft
Volume of wall in cft = L x W x H = 5 x 0.25 x 10 = 12.5 ft³
For both sides = 2 x 12.5 = 25 ft³

So, sum of the volume of both walls = 50 ft3 + 25 ft3 = 75 ft³.

From previous calculation, we get 1 CFT = 12.5 bricks

So, numbers of bricks for 75 CFT = 12.5 x 75 = 937.5 bricks

So, the numbers of bricks necessary for building up 10 x 5 ft room = 937.5

Instead of manual calculations for each wall, you can easily calculate the number of bricks needed by just entering wall dimensions into an online bricks calculator. It simplifies the process and ensures better accuracy.