EstimatIing

Estimate of construction of a building consists of two parts

Material Estimate

In this section we have tried to provide some data by which you can have a check on the requirement as well as consumption of the materials.

A)     Dry materials required for one cu.m. of cement concrete

Mix	Cement in 50 kg. bags	Sand in cu.m.	Aggregate (Stone chips) 20mm to 50mm in cu.m.
1:1 ½ :3	8.09 bags	0.425	0.85
1:2:4	6.37 bags	0.445	0.89
1:2 ½ :5	5.26 bags	0.460	0.92
1:3:6	4.49 bags	0.470	0.94
1:4:8	3.46 bags	0.485	0.97
1:5:10	2.78 bags	0.485	0.97

B)      Materials required for one cu.m. of brick masonry using 25% wet mortar

Mix	Cement in 50 kg. bags	Bricks in Nos.
		254mm x 127mm x 76mm size	190mm x 90mm x 90mm size
1:2	3.41	335	530
1:3	2.54	335	530
1:4	2.03	335	530
1:5	1.72	335	530
1:6	1.44	335	530
1:7	1.25	335	530
1:8	1.11	335	530

C)      Cement required for 25 mm thick Plaster for ten sq.m. of plaster

Mix	Cement in 50 kg. bags
1:2	4.01
1:3	3.10
1:4	2.48
1:5	2.10
1:6	1.75

 D)     Cement required for 20 mm thick Plaster for ten sq.m. of plaster

Mix	Cement in 50 kg. bags
1:2	3.26
1:3	2.52
1:4	2.01
1:5	1.61
1:6	1.42

 E)      Cement required for 15 mm thick Plaster for ten sq.m. of plaster

Mix	Cement in 50 kg. bags
1:2	2.46
1:3	1.90
1:4	1.52
1:5	1.29
1:6	1.07

 F)      Cement required for 12.7 mm thick Plaster for ten sq.m. of plaster

Mix	Cement in 50 kg. bags
1:2	2.00
1:3	1.54
1:4	1.23
1:5	1.05
1:6	0.87

 G)     Cement required for 10 mm thick Plaster for ten sq.m. of plaster

Mix	Cement in 50 kg. bags
1:2	1.84
1:3	1.42
1:4	1.14
1:5	0.96
1:6	0.80

 H)     Material required for one sq.m. of White washing

Coat	Shell lime in Kg.	Quick lime in Kg.
One coat work	0.05	0.10
Two coats work	0.08	0.17
Three coats work	0.12	0.23

 I)        Materials required for one sq.m. of Distempering

Coat	Distemper in Kg.
1st coat	0.122 kg.
2nd and subsequent coats	0.073 kg. Per coats

 J)       Materials required for hundred sq.m. of Varnishing

Coat	Varnish in Litres
One coat work	7.5
Two coats work	12.5

 K)       Rough Estimate of materials for overall building

Materials required on plinth area basis for single storey building

Name of Items	Quantity per sq.m. of plinth area
Bricks	500 Nos.
Cement	1.5 Bags
Steel bars	12 Kg.

Cost Estimate

ROUGH ESTIMATE OF COST OF BUILDINGS

Name of Items	Percentage of total cost
Labour	30     o 35
Cost of materials	65     o 70
Foundation upto and including plinth	15     o 20
Superstructure	80     o 85
Second storey	75 to 85 of 1st storey
Direct and overhead Cost:a)      Direct on actual work b)      Overhead cost due to establishment, supervision, incidental etc.	85 15
Sanitation and electrificationa)      Sanitary and water supply b)      Electric installations without fans c)       Electric fans	7 to 9 7 5
Cost break-up of different partsa)      Earthwork in excavation and filling b)      Foundation concreting c)       Damp proof course d)      Brick work e)      Roofing f)       Doors and windows g)      Plastering and painting h)      White and colour washing, painting i)        Miscellaneous	½ to 1 4 to 6 1 34 20 16 10 2 4
Cost of material and laboura)      Bricks b)      Cement c)       Steel bars d)      Timber e)      Lime f)       Labour g)      Miscellaneous	25 10 10 15 5 30 5
Annual repair and maintenance	1 to 1 ½ of capital cost of building