Masonry platform cost estimation:7 steps

Ashwini Kumar

4 years ago

Masonry platform building estimation, cost estimation can be done based on the provided specifications, drawings.

Masonry platform specifications, drawings

Give below the specifications:

Masonry platform size 7 m x 6 m
Masonry is constructed in 1st class brickwork in footings and above footings.
Foundation is laid in cement concrete
25mm cement concrete flooring is laid over 75mm thick lime concrete
Masonry walls outside are finished with 12mm thick plastering in 1:6 ratio
For cost estimation, local rates are considered

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7 steps for Masonry platform quantity estimation

The following 7 steps are involved in quantity estimation.

Earthwork excavation quantity estimation
Earthwork backfilling.
cement concrete foundation.
1st class brickwork quantity.
Outer walls plastering quantity.
Cement concrete flooring quantity.
cost estimation using local rates.

Longwall centre to centre length can be calculated by =7-(0.5×0.4)-(0.5×0.4)=6.6 m

Shortwall centre to centre length can be calculated by =6-(0.5×0.4)-(0.5×0.4)=5.6 m

1. Earthwork excavation quantity

Earthwork excavation in the foundation can be estimated by:

Length of Longwall in excavation = 6.6 m +0.8 m =7.4 m

Total longwall excavation quantity = 2 no.s x 7.4 m x 0.8 m x 0.7 m =8.28 cum

Length of short wall in excavation = 5.6 m -0.8 m =4.8 m

Total short wall excavation quantity = 2 no.s x 4.8 m x 0.8 m x 0.7 m =5.37 cum

So,total earthwork excavation in foundation=8.28 cum +5.37 cum=13.65 cum

2. Earthwork in backfilling

Above GF quantity required for backfilling can be estimated by:

Length of Longwall for backfilling = 6.6 m -0.4 m =6.2 m

Length of the short wall for backfilling = 5.6 m -0.4 m =5.2 m

Height of the platform required for backfilling= 2 m-0.075 m =1.925 m

where= 0.075 m is flooring thickness,2 m is the total height of the platform.

So,total earthwork quantity required for backfilling=6.2 m x 5.2 m x 1.925 m =62.06 cum

3. Cement concrete in foundation quantity

Cement concrete in the foundation can be estimated by:

Length of Longwall in foundation = 6.6 m +0.8 m =7.4 m

Total longwall cement concrete quantity = 2 no.s x 7.4 m x 0.8 m x 0.2 m =2.36 cum

Length of short wall in foundation = 5.6 m -0.8 m =4.8 m

Total short wall cement concrete quantity = 2 no.s x 4.8 m x 0.8 m x 0.2 m =1.53 cum

So,total cement concrete in foundation=2.36 cum +1.53 cum=3.89 cum

4. 1st class brickwork quantity

1st class brickwork quantity in footings and above footings can be calculated by:

In 1st footings

Length of Longwall in 1st footing = 6.6 m +0.6 m =7.2 m

Total longwall brickwork quantity in 1st footing = 2 no.s x 7.2 m x 0.6 m x 0.2 m =1.72 cum

Length of short wall in 1st footing = 5.6 m -0.6 m =5 m

Total short wall brickwork quantity in 1st footing = 2 no.s x 4.8 m x 0.6 m x 0.2 m =1.15 cum

So,total brickwork quantity in 1st footing=1.72 cum +1.15 cum=2.87 cum

In 2nd footings

Length of Longwall in 2nd footing = 6.6 m +0.5 m =7.1 m

Total longwall brickwork quantity in 1st footing = 2 no.s x 7.1 m x 0.5 m x 0.1 m =0.71 cum

Length of short wall in 2nd footing = 5.6 m -0.5 m =5.1 m

Total short wall brickwork quantity in 2nd footing = 2 no.s x 5.1 m x 0.5 m x 0.1 m =0.51 cum

So,total brickwork quantity in 2nd footing=0.71 cum +0.51 cum=1.22 cum

Above footing

Length of Longwall in above footing = 6.6 m +0.2 m +0.2 m=7.0 m

Height of the wall from above footing to top =2 m +0.2 m = 2.2 m

Total longwall brickwork quantity in above footing = 2 no.s x 7.0 m x 0.4 m x 2.2 m =12.32 cum

Length of short wall above footing = 5.6 m -0.2 m-0.2 m =5.2 m

Total short wall brickwork quantity in above footing = 2 no.s x 5.2 m x 0.4 m x 2.2 m =9.15 cum

So total brickwork quantity in above footing =12.32 cum + 9.15 cum =21.47 cum

So total 1st class brickwork quantity in footings and above footings = 2.87 cum+1.22 cum+21.47 cum=25.56 cum

5. Outside walls 12mm thick plastering quantity

Length of Longwall for plastering = 6.6 m +0.2 m +0.2 m=7.0 m

Height of the wall from above footing to top =2 m +0.2 m = 2.2 m(including 20mm below GL)

Total longwall plastering quantity = 2 no.s x 7.0 m x 2.2 m =30.8 sq.m

Length of short wall for plastering = 5.6 m +0.2 m+0.2 m =6 m

Total short wall plastering quantity = 2 no.s x 6 m x 2.2 m =26.4 sq.m

So total 12 mm thick plastering quantity =30.8 sq.m + 26.4 sq.m =57.2 sq.m

6. Cement concrete flooring quantity

cement concrete on compacted soil

100 mm thick cement concrete 1:2:4 is laid on the compacted soil.

Length of the longwall = 6.6-0.2-0.2=6.2 m.

Length of short wall = 5.6-0.2-0.2=5.2

Cement Concrete quantity on floor = 6.2 x 5.2 x0.1 = 3.22 cum.

Cement concrete on brick wall

25 mm thick cement concrete 1:2:4 is laid on brickwork

Length of long brickwall = 6.6 + 0.2+0.2=7 m

Cement concrete on long brickwall = 2 nos x7 m x0.4 mx 0.025 m=0.14 cum

length of short brick wall = 5.6-0.2-0.2=5.2 m

Concrete quantity on short brick wall =2 nos x5.2 m x0.4 m x0.025 m=0.104 cum

So total cement concrete quantity in 1:2:4 ratio = 3.22 cum +0.14 cum +0.104 cum=3.46 cum

Cost estimation

For cost estimation all rates includes with labour and materials

S.No	Work Description	Estimated Quantity	Unit	Rate	Amount
1	In foundation Earthwork excavation	13.65	cum	350	4777.50
2	Earth work in back-filling	62.06	cum	250	15515
3	Cement concrete in foundation	3.89	cum	3600	14004
3	1st class brickwork	25.56	cum	4600	117576
4	Outside walls 12 mm thick plastering	57.2	Sq.m	310	17732
5	1:2:4 cement concrete	3.46	cum	3600	12456
	Total in Rs				182060.50
	Add 5% contingency to total cost estimation				191163.53

Masonry platform Cost estimation sheet

So,total cost estimation of masonry platform is Rs 191163.53 including all manpower and materials.

Conclusion:

From the above 7 steps cost estimation of masonry platform as be calculated easily.

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