Brickwork rate analysis can be calculated by estimating materials cost ,labour cost,water charges and by adding contractor profits.
Brickwork materials
Brickwork involves the following materials and labor cost.
- Cement
- Sand
- Bricks
Let us consider length of brick wall as 10m and height as 3m and thickness of wall as 230mm.
Considering bricks of size 230mm x 115mm x 75mm (9” x 4.5” x 3”) were utilized.
Estimating materials quantity
Volume of brick wall=10m x 3m x .23m=6.9 m3
Volume of 1 brick with out mortar=0.23m x0.115m x 0.075m=0.00198 m3
Volume of 1 brick with mortar=(0.23+0.01)m x (0.115+0.01) x (0.075+0.01) =0.24×0.125×0.085=0.00255m3, Considering 10mm thick mortar.
So total number of bricks required for 6.9 m3 volume brick wall=6.9/0.00255=2706 No’s.
Volume of 2706 No’s bricks with out mortar =2706 x0.00198=5.35 m3
Note: Volume of brick wall =Dry volume of bricks + volume of wet mortar
Volume of wet mortar = Volume of brick wall -Dry volume of bricks=6.9 m3-5.35m3=1.55m3
Note: Volume of dry mortar=1.33 x Volume of wet mortar
Volume of dry mortar=1.33 x 1.55 m3=2.06 m3
Quantity and Cost of Cement
So Volume of dry mortar for 6.9 m3 brick wall =2.06 m3
Considering cement ,sand ratio in brick wall is 1:4,Density of cement =1440 kg/m3
Quantity of Cement =2.06 x 1×1440/(1+4) =593.28 kgs =11.86 bags =12 bags
Considering cost of 1 cement bag= Rs 350.
So cost of 12 bags =350 x 12 =Rs 4200
Quantity and cost of Sand
Quantity of sand =2.06 x 4×1920/(1+4)=3165 kgs, Considering density of sand =1920kg/m3
Considering cost of sand is Rs 1600/MT
Cost of sand =3.165 MT x 1600 =Rs 5064
Cost of bricks
So 6.9m3 brickwall,2706 Nos red bricks are required.
Considering rate of 1 brick is Rs 7 ,So cost of 2706 bricks =2706 x 7 =Rs 18942
So Total cost of brick work =Cost of Cement + Cost of Sand + Cost of Bricks
= Rs 4200 + Rs 5064 + 18942
=Rs 28206
Labour Cost
For 1m3 1 mason and 1 helper is required
Assuming Cost of 1 mason is Rs 800 and cost of 1 helper is Rs 500
So for 6.9 m3 of brick work, nearly 7 masons and 7 helpers are required.
So cost of Labour =7×800 + 7×500=Rs 9100
So total cost of brickwork including labour =28206 +9100 =Rs 37306
Cost of 1 cum brickwork
So cost of 6.9 m3 brick work is Rs 37306
Cost of 1m3 brick work =37306/6.9= Rs 5407
Add 10% contractor profit to total cost = Rs 5407x 0.10=Rs 540.7
So Total cost of 1m3 brickwork =Rs 5407 +Rs 541 =Rs 5948
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