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Rate Analysis of Brickwork – Brick Work & Calculate Quantity and Cost

Rate Analysis of Brick work

Rateanalysis for Brick work  requires estimation of materials for Brick work, i.e. quantity of cement, sand and bricks required for 1m³ for various proportions, i.e., Brick work 1:3, 1:4, 1:6, 1:8  etc. So, let us first calculate number of brick, quantity of cement and sand required for 1m³ Brick work.

Download link of sheet to calculate is given below 

Most knowing point for rate analysis

When you start doing rate analysis we must remember these points:

-          Item for rate analysis (Name of the Item i.e. PCC, RCC, Brickwork etc. )

-          Specification (type of material, quality of material etc.)

-          Unit (per Sqm, Cum, Rm etc.)

-          Labour

-          Material

-          Overhead (Profit for contractor)

Labour for brickwork:

1)      Skilled Labour

2)      Unskilled Labour

Material for brickwork:

1)      Cement

2)      Sand

3)      Bricks

Now calculating material

            Suppose we have to no of brick and the volume of material of the wall having a volume of the 1-meter cube, the size of brick is going to use is 230mm ×220 mm ×55 mm and mortar is 8 mm thick with the ratio of 1: 4.  So we have to calculate these items which are given below,

Calculate:

1.) The number of bricks

2.) The Volume of cement

3.) The Volume of sand

Known Data :

Volume (L x W x H) = 1 meter cube.

Mortar thickness = 10 mm.

Mortar Ratio = 1:4

Size of brick = 230 mm ×110 mm ×55 mm. or (0.23 m x 0.11 m x 0.055 m).

Size of brick with mortar = 240 mm × 120 mm× 65 mm. or (0.24 m x 0.12 m x 0.065 m).

This calculation this in 2 steps, to make our calculation easier,

1. STEP: (BRICKS CALCULATION)

1.      Volume of 1 brick = (0.23 m x 0.11 m x 0.055 m) = 0.00139 meter cube.

2.      Volume of 1 brick with mortar = (0.24 m x 0.12 m x 0.065 m) = 0.001872 meter cube.

3.      No of bricks in 1 cum = volume/volume of bricks with mortar = 1/0.001872 = 534.18 Bricks.

2. STEP: (MORTAR CALCULATION)  

1.      Volume covered by 534 bricks in 1 Cum Volume = (Bricks number x Volume of 1 brick).

2.      Bricks Volume  = 534 x 0.00139 = 0.743 meter cube.

3.      Volume  = (Total volume – volume of bricks).

4.      Mortar volume = 1 – 0.743 = 0.257 meter cube. (wet volume).

5.      Dry Volume = 0.19 x 1.33 = 0.342 meter cube (dry Volume).   Where (1.33 is a constant)

CEMENT:

Cement: = dry volume /Sum of Ratio.

= 0.342/5

=0.0684 cum

In  Bag, volume of one bag cement is 0.0347 cum

= 0.0684 /0.0347   <1 bag = 50 kg>

= 1.97 bags= 2 bags

SAND:

Sand: = voume of cement X sand ratio

= (0.0684 x 4 )

= 0.2736 Cum

Summary :

BRICKS = 534 Nos

CEMENT = 1.97 bags.

SAND = 0.2736 Cum.

Note: These ratios may change by changing the dimension of the mortar thickness or size of the bricks as well as the mortar ratios 1: 4, 1: 6 etc.

Estimation of Labour and Tools for cement mortar:

For 1m³ of Brickwork with  Ratio 1:4, unskilled labour is required for 1.76 man-days for mixing of mortar, for carrying of cement, sand and water. Skilled labour is required for 1.20 man-day for placing, checking, of concrete on required line level for 1cum.

Rate Analysis of Brickwork for Ratio of mortar 1:4 :

Rate analysis of Brickwork requires the rate of cement, sand multiplied with their respective quantity. Cost of labour and tools and tackles for the brickwork  is also calculated. Cost of cement, sand,  labour and tools depend on local availability and local rates.

When, quantity of cement, sand, aggregate, labour and tools are multiplied by its rates, and a contractors profit of 10-20% is assumed, the total sum of the amount is taken as the cost of 1m³ of  brick, which is shown below

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	Brick masonry work in 1:4
	Chimney made brick work in cement mortar 1:4 in foundation upto plinth including wetting of bricks, curing of work, perfect line & level as specified in the specification & drawings all complete.
Unit : Per Cum.
Source	Type	Quantity	Unit	Rate	Amount (Rs.)	Remarks
Labour	Skilled	1.20	md	750.00	900.00
	Unskilled	1.76	md	550.00	968.00
Material	Cement	98.500	kgs	16.50	1625.25
	Brick	534.00	No.	17.50	9345.00
	Sand	0.274	Cum.	1300.00	355.68
Sub-Total					13193.93
Add, contractor's overhead		15% of sub-total			1979.09
Total rate					15173.02

Sample of Rate Analysis

Same Process for Brickwork with ratio (1:3), (1:4), (1:6) etc.

DOWNLOAD BRICK WORK CALCULATION SHEET