How do you do the Rate Analysis for Brickwork?

We have already discussed the importance of rate analysis. and how it will help us to face everyday scenarios.

Estimation of Material Quantity

Assume that we are going to analysis the rate for 1 m³ of  Brickwork (B.W) 

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 plastering work post.

The above formula will give a dry volume of cement mortar, So to get wet concrete volume, we have to multiply the dry volume by 1.33 

Total Parts = 1+5 =6

Required Volume of Cement = 1/6 x 1.33 x Mortar Volume = 1/6 x 1.33 x 0.2305= 0.0511 m³

To convert into cement bags  – (0.0511 x 1440)/50 = 1.47 Bags or 73.58 Kg 

Required Sand Volume = 5/6 x 1.33 x Mortar Volume = 5/6 x 1.33 x 0.2305 = 0.2554 m³

Required Material Quantity

Materials required for 1 m3 Brickwork is

• 500 Numbers of bricks
• 73.58 Kg or 1.47 Bags of cement
• 0.2554 m³ of sand

Labour Estimation

From our thumb rule estimation (Labour Output Per Day), we are calculating the labour estimation as follow,

• Mason / Brick Layer – 0.4
• Male Coolie – 0.5
• Female Coolie – 0.5
• Waterman – 0.2

Description	Unit	Qty	Rate	Amount
Analysis of the rate for 1 m3 of  Brick Work (B.W) in Cement Mortar 1:5 (1 Cement: 5 coarse sand) using common burnt clay bricks of class designation 75, including curing, etc.
Materials
Cement	Bags	1.47	350	514.5
Sand	m3	0.2554	1800	459.72
Bricks including wastage	Nos	500	7	3500
Manpower
Mason	Each	0.4	700	280
Male Mazdoor	Each	0.5	500	250
Female Mazdoor	Each	0.5	400	200
Waterman	Each	0.2	400	80
		Subtotal		5284
Tools & Tackles			1%	53
Add for Sundries & Contingencies			3%	158.5
Add for Overhead & Contractor profit			10%	528
		Total		6023.5
		Rate per m3		6023.5

You may download the Excel Sheet of Rate Analysis: Rate Analysis Sheet