How to Calculate Number of Bricks and Cement, Sand for brickwork?

Today we are going to discuss brickwork calculation. We are going to find out the below for 1m³ of brickwork

• Number of bricks
• Required cement quantity
• Required sand quantity

Brickwork Basics

• Size of the Bricks – 190mm x 90mm x 90mm 

For calculation, purposes convert the Size of bricks into Meter.

So now the measurement is 0.19m x 0.09m x 0.09m

Therefore Volume of 1 brick = 0.001539 m³

Brickwork Calculation Formula

STEP 1 – Volume of single brick without mortar

Volume of 1 brick without mortar  = 0.19 x  0.09  x 0.09 = 0.0015 m³              

STEP 2 – Volume of single brick with mortar

While brickwork construction we will add cement mortar around 3 sides (left, right & top). 

So adding 10mm thick on each side of brick as mortar thickness 

The volume of brick with mortar = (0.19+0.010) x (0.09+0.010) x (0.09+0.010) =  0.20 x 0.1 x 0.1  = 0.002 m³ 

The volume of 1 brick with mortar = 0.002 m³

STEP 3 – Number of bricks for 1 m³ Brickwork

Number of bricks with mortar for 1 m3 = 1 cubic meter / volume of bricks with mortar = (1/0.002)= 500 Nos

So the required number of bricks for 1 m³ = 500 Nos

STEP 4 – Cement Mortar Volume for 1m³ of Brickwork

Cement Mortar Volume = Volume of brickwork with mortar – the volume of bricks without mortar

Volume of bricks with mortar in 1 m³ = 500 x 0.002 = 1 m³

Volume of bricks without mortar in 1 m³ = 500 x 0.001539 = 0. 7695 m³

Therefore required cement mortar = 1 m³ – 0.7695 m³ = 0.2305 m³

Step 5 – Calculate Cement & Sand Volume

As we know the required cement mortar = 0.2305 m³

Assuming cement mortar ratio as 1:5 (1 Part Cement: 5 Part Sand)

We have already discussed the cement mortar volume calculation in the plastering work post.

The above formula will give the dry volume of cement mortar, So to get wet concrete volume, we have to multiply the dry volume by 1.55 

Total Parts = 1+5 =6

Required Volume of Cement = 1/6 x 1.55 (void ratio) x Mortar Volume = 1/6 x 1.55 x 0.2305= 0.0595 m³

To convert into cement bags  – (0.0595 x 1440)/50 = 1.71 Bags or 85.68 Kg 

Required Sand Volume = 5/6 x 1.55 (void ratio) x Mortar Volume = 5/6 x 1.55 x 0.2305 = 0.298 m³

Result

Materials required for 1 m³ Brickwork is

• 500 Numbers of bricks
• 85.68 kg or 1.71 Bags of cement
• 0.298 m³ of sand

Make Use of this brickwork calculator

Hope you learned something from this post. Happy day 🙂