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Building Construction – Work Estimate, Material Estimate, Cost Estimate (Two Bedrooms)

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PREAMBLE
The art of building construction has a spacious compass in the discipline of forestry. In the practical life of a forester, this acquaintance is quite useful principally in the cases like construction and repair of government installations/ offices, rest houses, and residences, etc.
Apart from construction, a sound knowledge of estimation of expenses and work is also indispensable for supervision and budgetary commitments. Consequently, the main objective of this project is to endow with us the knowledge and develop skills concerning building construction, planning, designing, and estimate calculations.
Keeping in view the above necessities, design, and estimation of a two bedrooms house is a part of our module. This booklet provides an insight into the cost, material and work estimate of a two bedroom single storey house project covering an area of 10 Marlas (ie 2720 square feet) with dimensions 68ft × 40ft. The area is plain having soil mixture of sand and gravel. The angle of repose of soil is 33O and the safe bearing capacity is 25 tons/ m2.


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DESIGN OF FOUNDATION
Sample Map (not as per specs in this article)

It is a spread footing foundation with L = 26 tons, P = 23.64 tons/m2, j = 0.15m, w = 1.65 ton/ m3, θ = 33O, m = 2.46 ton/m 2.

(i)                        Width of Foundation:
By Formula:
                        W = L / P
    W = 1.09 m
By Thumb Rule:
                         W = 2t + 2j
         W = 1.3m
Taking the Maximum value ie 1.3m or 4’ 3’’
           
(ii)                      Depth of Foundation:
By Formula:
                        h = P/w (1-Sin θ / 1 + Sin θ) 2
        h = 1.25 m
By Thumb Rule prescribed maximum depth = 0.9 m
Taking maximum value ie 1.25m or 4’ 2’’
     
(iii)                    Depth of Concrete Block:
By Formula    d = √3pj2/ m
      Or,            d = 0.254m
By Thumb Rule,
                       d = j = 0.15m
Taking maximum value ie 0.254m or 10’’
Therefore,
                  Width of Foundation = 1.3m
                  Depth of Foundation = 1.25m
Depth of Concrete Block = 0.254m     



SPECIFICATIONS
S. No
OBJECTS
SPECIFICATION
1.
P.C.C. in foundation
1: 3: 6
2.
P.C.C. in floor
1: 3: 6
3.
D.P.C. in foundation
1: 2
4.
D.P.C. in roof
1.75 kg/ m2
5.
R.C.C. in roofs and beams
1 %
6.
Steel in beams
—
7.
Steel in roofs
1 %
8.
Steel in lintels
0.5 %
9.
Brick Masonry in foundation
1: 6
10.
Plastering
1: 4
11.
Paint and Distempering
3 coats
12.
Electrification
10 %
13.
Sanitary fitting
7 %
14.
Over head cost
15.
Brick masonry in Super-structure
1: 6
16.
D.P.C. in floor

DETAIL OF DESIGN
S. No
ITEM
SIZE
No
1.
Bedroom
12ft × 12ft
O2
2.
Guest room
12ft × 10ft
01
3.
Drawing room
16ft × 12ft
01
4.
Scullery
10ft × 10ft
01
5.
Washroom 1
7ft × 6ft
01
6.
Washroom 2
6ft × 6ft
01
7.
Washroom 3
6ft × 5ft
01
8.
Porch
14ft × 10ft
01
9.
Door 1
2ft-6in × 7ft
07
10.
Door 2
3ft × 7ft
05
11.
Door 3
4ft × 7ft
01
12.
Window 1
6ft × 3ft
03
13.
Window 2
4ft × 3ft
03
14.
Ventilator
2ft × 2ft
03
15.
Gate
9ft × 9ft
01 



Forest Engineering – A (Building)
WORK ESTIMATE
Name:____________                                                                       Date:______________
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
1.
Cleaning and leveling of ground
68 ft  
40 ft
2720 sq.ft
2.
Excavation of foundation trenches
i.
Compound walls
216 ft
0.75 ft
4.25 ft
688.5 cft
ii..
Load bearing
246 ft
0.75 ft
4.25 ft
784.12 cft
iii.
Pillars (Porch/ Verandah)
2
2 ft
1 ft
4 ft
8 cft
Total
1480 cft
3.
L.C.C. in foundation (1: 3: 6)
i.
Compound walls
216 ft
4.25 ft
0.75 ft
688.5 cft
ii.
Load bearers
246 ft
4.25 ft
0.75 ft
784.12 cft
iii.
Pillars (verandah)
2
2 ft
2 ft
0.5 ft
4 cft
iv.
Pillars (Gate)
2
2 ft
2 ft
0.5 ft
4 cft
Total
1480.6 cft
4.
Brick Masonry in foundation
i.
Compound walls
1st step
216 ft
3.25 ft
0.5 ft
351 cft
2nd step
216 ft
2.41 ft
0.5 ft
260 cft
3rd step
216 ft
1.75 ft
0.5 ft
189 cft
4th step
216 ft
1.08 ft
0.5 ft
116.64 cft
Total
916.64
ii.
Load bearer
1st step
246
3.25 ft
0.5 ft
399.75 cft
2nd step
246
2.41 ft
0.5 ft
296.43 cft
3rd step
246
1.08 ft
0.5 ft
132.84 cft
Total
1044.27 cft
iii.
Pillars (veranda)
2
1st step
2
2 ft
2 ft
0.5 ft
4 cft
2nd step
2
1.5 ft
1.5 ft
0.5 ft
2.25 cft
Total
6.25 cft

Forest Engineering – A (Building)
WORK ESTIMATE
Name:____________                                                                       Date:______________
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
iv.
Pillars (Gate)
1st step
2
1.5 ft
1.5 ft
0.5 ft
2.25 cft
2nd step
2
1 ft
1 ft
0.5 ft
1 cft
Total
3.25 cft
Sum Total
1970.4 cft
5.
Brick masonry in Super-structure
i.
Compound wall
216 ft
0.75 ft
9 ft
1458 cft
ii.
Load bearer
246 ft
0.75 ft
11 ft
2029.5 cft
iii.
Pillar (veranda)
2
1 ft
1 ft
11 ft
22 cft
iv.
Pillar (Gate)
2
1.5 ft
1.5 ft
9 ft
40.9 cft
v.
Parapet
164 ft
0.375 ft
4 ft
246 cft
Total
3796.4 cft
Deduction in brick masonry in super-structure
i.
Gate
1
9 ft
0.75 ft
9 ft
60.75 cft
ii.
D1
7
2.5 ft
0.75 ft
7 ft
118.125 cft
iii.
D2
5
3 ft
0.75 ft
7 ft
78.75 cft
iv.
D3
1
4 ft
0.75 ft
7 ft
28 cft
v.
W1
3
6 ft
0.75 ft
3 ft
54 cft
vi.
W2
3
4 ft
0.75 ft
3 ft
36 cft
vii.
V
3
2 ft
0.75 ft
2 ft
12 cft
Total Deduction
387.62 cft
Net brick masonry in super-structure
3796.4 – 387.62
3408.8 cft
6.
Brick masonry b/w plinth level and ground level
246 ft
1.08 ft
2 ft
533 cft
Net Brick Masonry
5912.19 cft
7.
Lintel R.C.C(1:3:6)
D1
7
3.5 ft
0.75 ft
0.5 ft
9.18 cft
D2
5
4 ft
0.75 ft
0.5 ft
7.5 cft
D3
1
5 ft
0.75 ft
0.5 ft
1.875 cft
W1
3
8 ft
0.75 ft
0.5 ft
9 cft
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
W2
3
6 ft
0.75 ft
0.5 ft
6.75 cft
V
3
4 ft
0.75 ft
0.5 ft
4.5 cft
Total
38.805
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
8.
Flooring area
1639.18 sq.ft
Covered (total)
Area covered by load bearer
246 ft
0.75 ft
184.5 sq.ft
Net area of floor
1639.18 sq.ft – 184.5 sq.ft
1454.7 sq.ft
i.
Compact earth
1 ft
1454.7 cft
ii.
L.C.C (1:3:6)
0.333 ft
484.41 cft
iii.
Crushed stones
0.5 ft
727.35 cft
iv.
D.P.C
0.0833 ft
121.17 cft
Roof
Total area covered
1639.18 sq.ft
i.
R.C.C
0.333 ft
546.40 cft
ii.
Brick tiles
0.083 ft
136.60 cft
iii.
Bitumen layer (D.P.C)
0.25 ft
409.80 cft
iv.
Earth fill
0.333 ft
546.40 cft
10.
Plastering (1:4)
i.
Compound wall
216 ft
9 ft
1944
ii.
Compound wall (top)
216 ft
0.75 ft
162
iii.
Load bearer
2
262 ft
5412
iv.
Parapet
2
164 ft
4 ft
1312
v.
Parapet (top side)
164 ft
61.5
vi.
Pillar (veranda)
2
1 ft
11 ft
22
vii.
Pillar (Gate)
2
1.5 ft
9 ft
40.5
viii.
Ceiling
1594.7
ix.
Floor
1594.7
Total
12142 sq.ft

Forest Engineering – A (Building)
WORK ESTIMATE
Name:____________                                                                       Date:______________
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
Deductions
Gate
1
9 ft
9 ft
81 sq.ft
D1
7
2.5 ft
7 ft
122.5 sq.ft
D2
5
3 ft
7 ft
105 sq.ft
D3
1
4 ft
7 ft
28 sq.ft
W1
3
6 ft
3 ft
54 sq.ft
W2
3
4 ft
3 ft
36 sq.ft
V
3
2 ft
2 ft
12 sq.ft
Total
438.5 sq.ft
Net area to be plastered
12142 – 438.5
11703.5 sq.ft
11.
Word work frame
D1
7
21 ft
0.333 ft
0.25 ft
10.50 cft
D2
5
22 ft
0.333 ft
0.25 ft
12.80 cft
D3
1
24 ft
0.333 ft
0.25 ft
2.0 cft
W1
3
30 ft
0.333 ft
0.25 ft
5.0 cft
W2
3
16 ft
0.333 ft
0.25 ft
4.0 cft
V
3
10 ft
0.333 ft
0.25 ft
2.50 cft
Total
36.82 cft
11(a)
Shutters
D1
7
2.5 ft
0.16 ft
6.5 ft
15.6 cft
D2
5
3.0 ft
0.16 ft
6.5 ft
21.84 cft
D3
1
3.5 ft
0.16 ft
6.5 ft
3.64 cft
W1
3
5.5 ft
0.16 ft
2.5 ft
6.6 cft
W2
3
3.5 ft
0.16 ft
2.5 ft
4.2 cft
V
3
1.5 ft
0.16 ft
1.5 ft
1.087 cft
Total
52.96 cft
Forest Engineering – A (Building)
WORK ESTIMATE
Name:____________                                                                       Date:______________
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
12.
Wire mesh Door
D1
21 ft
0.0833 ft
0.25 ft
0.874 cft
D2
22 ft
0.0833 ft
0.25 ft
0.916 cft
D3
1
24 ft
0.0833 ft
0.25 ft
0.499 cft
Total
2.289 cft
13
Wire mesh
D1
2
2 ft
6.5 ft
26 sq.ft
D2
2
2.5 ft
6.5 ft
32.5 sq.ft
D3
1
3.5 ft
6.5 ft
22.75 sq.ft
W1
3
5.5 ft
2.5 ft
41.25 sq.ft
W2
3
3.5 ft
2.5 ft
26.25 sq.ft
V
3
1.5 ft
1.5 ft
6.75 sq.ft
Total
155.75 sq.ft
14
Glasswork
W1
3
5.5 ft
2.5 ft
41.25 sq.ft
W2
3
3.5 ft
2.5 ft
26.25 sq.ft
V
3
1.5 ft
1.5 ft
6.75 sq.ft
Total
74.25 sq.ft
15.
Grill
W1
3
5.5 ft
2.5 ft
41.25 sq.ft
W2
3
3.5 ft
2.5 ft
26.25 sq.ft
Total
67.5 sq.ft

Forest Engineering – A (Building)
WORK ESTIMATE
Name:____________                                                                       Date:______________
S. No
Detail of work to be done
No
Length (ft)
Breadth/ thickness (ft)
Height/ depth (ft)
Quantity (sq.ft/cft)
16.
Roof of car porch
Area covered
14 ft
10 ft
140 sq.ft
R.C.C
14 ft
10 ft
0.333 ft
64.62 cft
Brick tiles
14 ft
10 ft
0.0833 ft
11.66 cft
Earth fill
14 ft
10 ft
0.333 ft
46.62 cft
17
Polishing
D1
7
2.5 ft
7 ft
122.5 sq.ft
D2
5
3 ft
7 ft
105 sq.ft
D3
1
4 ft
7 ft
28 sq.ft
W1
3
6 ft
3 ft
54 sq.ft
W2
3
4 ft
3 ft
36 sq.ft
V
3
2 ft
2 ft
12 sq.ft
18
Painting
Gate
1
9 ft
9 ft
81 sq.ft
Grills
67.5 sq.ft
19.
Stairs
R.C.C slab
15.6 ft
3.5 ft
0.5 ft
27.3
Landing
3 ft
3.5 ft
0.5 ft
5.25
P.C.C in stairs (front)
41.36 cft
P.C.C in stair (back)
20.64 cft
20
D.P.C (Cement plaster) 1:2 + asphalt coating
i.
Compound wall
216 ft 
0.75 ft
162 sq.ft
ii.
Load bearer
246
0.75 ft
184.5 sq.ft
iii.
Porch pillar
2
2 ft
2 ft
8 sq.ft
iv.
Veranda
2
2 ft
2 ft
8 sq.ft
Total
362.5 sq.ft

Forest Engineering – A (Building)
MATERIAL ESTIMATE
S.No
NAME OF MAETERIAL
QUANTITY
1.
Net brick masonry in foundation
1033.77 cft
Net brick masonry in superstructure
3408.8 cft
Net brick masonry in plinth level
533 cft
Total
5912.19 cft
As 1 cft bricks contains 11.52 bricks so 5912.19 cft will contain
68108 bricks
2.
P.C.C in foundation (1:3:6)
1480.6 cft
Cement 1/10 * 1480.6
148.06 cft
Sand 3/10 * 1480.6
441.18 cft
Crush 6/10 * 1480.6
888.36 cft
3.
P.C.C in flooring (1:3:6)
484.06 cft
Cement: 1/10
48.44 cft
Sand: 3/10
145.32 cft
Crush: 6/10
290.64 cft
4.
R.C.C (1:2:4)
Lintels + Stairs
661 cft
Roof
54640 cft
Porch roof
46.62 cft
Total
659.12 cft
Cement 1/7 * 659.12
94.15 cft
Sand 2/7 * 659.12
188.31 cft
Crush 4/7 * 659.12
376.6 cft
5.
Net area to be plastered (1:4)
12142 cft
As plastering would be 0.5 inches, therefore, 12148 * 0.5/ 12
506 cft
Cement = 1/5 * 506
50.6*2 = 101.2 cft
Sand = 4/5 * 506
404.8 cft
6.
Wood
i.
Shutter
52.96 cft
ii.
Frames
36.82 cft
iii.
Wire mesh doors
2.28 cft
Total
92.07 cft
7.
Steel
Lintel (0.5 % reinforcement)
0.194 cft
Main roof 1%
5.464 cft
Porch roof 1%
0.836 cft
Total
6.5 cft
8.
Glass
74.25 cft

Forest Engineering – A (Building)
MATERIAL ESTIMATE
S.No
NAME OF MAETERIAL
QUANTITY
9.
Distempering (3 coats)
= 3 * 10548
31644 sq.ft
As 300 sq.ft require 1 gallon, 31644 sq.ft require
104 gallons
10
Paint (at 0.3 liter / sq.ft per coat)
0.03*297*3 (coats)
31644 sq.ft
11.
Iron grills
67.25 sq.ft
12.
Brick tiles for roof
1779.18/ 0.22 sq.ft
8087 bricks
13.
D.P.C (As 1 sq.meter = 1.75 kg/, 1 cft = 0.15 kg )
Therefore, 1734.7 sq.ft require
260 kg
14.
Total earth filling
In roof
593.02 cft
In floor
1734.7 cft
Total
2327.72
15.
P.C.C in Stairs (1:3:6)
67.25 sq.ft
15(a)
P.C.C in Stairs
Cement: 1/10 * 67.25 
6.725 cft
Sand: 3/10 * 67.25
20.17 cft
Crush: 6/10 * 67.25
40.35 cft
SUMMARY
1.
Bricks
68108 bricks
2.
Cement (As 1 cement bag = 1.25 cft, 832.5 cft)
666 bag
3.
Sand
1647 cft
4.
Crush
1555.6 cft
5.
Wood
92.07 cft
6.
Wire mesh
155.75 cft
7.
Glass
74.25 cft
8.
Steel MS bars (1cft = 0.22 tons)
1.43 ton
9.
Distemper
104 gallons
10.
Paints
6.8 cft
11.
Gate
81 sq.ft
12.
Brick tiles
8087 no
13.
Iron grills
67.5 sq.ft
14.
D.P.C
260 kg
15.
C.I Pipe 6 ft (3 nos)
18 ft
16.
Earth fill
2327.7 cft
17.
Broken bricks (As 1 ton = 50 cft)
15.94 tons
18.
Polishing
715 sq.ft

COST ESTIMATE
S.No
Item of Work
Quantity
Rate (Rs/Unit)
Cost (Rs)
1.
Bricks
2.
Cement
666 bags
330/ bag
219780
3.
Sand
1647 cft
800/100 cft
13176
4.
Crush/ gravel
1555.9 cft
1600/ 100 cft
24890
5.
Wood
92.07 cft
2300 / cft
211761
6.
Wire mesh
155.75 sq.ft
20/ sq.ft
3115
7.
Glass
74.25 sq.ft
120/ sq.ft
8910
8.
Steel
1.43 tons
47000/ ton
67210
9.
Distemper
104 gallons
650/ gallon
67600
10.
Paints
6.7 gallons
1100/ gallon
7350
11.
Gate
81 sq.ft
200/ sq.ft
16200
12.
Brick tiles
8087
6800/ 100
54993
13.
Iron grills
67.5 sq.ft
90/ sq.ft
6075
14.
DPC
65 gallons
400/ gallon
26000
15.
Earth fill
2328 cft
800/ cft
18622
16.
Broken bricks
15.94 ton
800/ ton
12757
17.
C.I Pipes
18 ft (3 lengths)
650 / 6 ft
2040
18.
Polishing
71.5 sq.ft
15/ sq.ft
10725
Total
1070879
19.
Sanitary work
7/100 * 1070789
74961
20.
Electrification
10/100 * 1070789
107087.9
Net Cost
1,252,928
Cost Per Square Feet
1,252,928/ 1799.18
696.4
———-
For correction and improvements please use the comments section below.


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