Example 1 : ESTIMATE OF RCC ROOF SLAB

Details of Measurements & Calculations of Quantities

Item No.

Particulars of items & details of works

No.Length

(m)Breadth

(m)

Height or

Depth(m)Quantity Explanatory notes

1RCC work 1:2:3 excluding steel & its bending, but including centering & shutering & binding steel

1 6.3 3.3 0.122.495 cum

No deduction for steel bars

2 Steel bars including bending(maild steel in RCC work- Main bars 12mm dia @ 0.89 kg/m ---- Straight bars 24cm c/c (No= ((6.30-0.80)/0.24)+1=27

27 3.44

Side cover 4 cm L=3.30-2side covers + 2

hooks = 3.30-0.08+(18x0.12)=3.44m

Bent up bars 24 cm c/c (No=((6.30-0.8)/0.24)=26

26 3.52Adding one depth 8 cm

for two bent ups.

Total 184.4 @ 0.89 = 184.40

kg/M *0.89=

164.12 kg

Distribution bars 6mm (dia @ 0.22 kg/m) Bottom bars central portion 18 cm c/c (Nos =( 2.00/18 ) + 1=12)

12 6.331=6.30-

0.08+(18*0.12)=6.33m

Bottom bars two sides 2x3 6.33Top bars two sides 2x3 6.33

Total

151.92 @ 0.22kg/m

33.42 kg

151.92 x 0.22 =

33.42 kg

Total =197.54

kg1.975 quintal

1 RCC work 1:2:4 exculding steel and its bending but including centering and shuttering and bending of steel 2.495 cum= 675.00/cum= RS 1684.12

2 steel bars including bending (mild steel ) in RCC work 1.975 q @ 515.00 per quintel= Rs 1017.13

Total Rs 2701.255% cotige. & WE Rs 135.06Grand toatal 2836.31

Abstract of estimated cost

SCHEDULE OF BARS --- RCC SLAB

Description of bars

Shape of Bending Dimensions In cmLength of each

(m)No.

Total Length

(m)

Weight(kg)

Main straight bars 12 mm. DIA 3.44 27 92.88

Main Bent up bars 12mm dia. 3.52 26 91.52

Total 184.4 164.12

Bottom distribution buting bars6 mm dia 6.33 18 113.94

Top distributing Bars 6mm dia 6.33 6 37.98

151.92 33.42

EXAMPLE 2

ESTIMATING OF R.C.C BEAM

A detailed estimate of a R.C.C beam of 8m clear span and 75cm x 40cm

Item No.Particulars of items & details of works

No.Length

(m)Breadth

(m)

Height or

Depth (m)

Quantity Explanatory notes

1 R.C.C. work 1:2:4 excluding steel and its bending but including centering

1 8.6 0.4 0.75 2.58 cu.mNo deduction for vol. Of

steel bars.

2 Steel bars including (mild steel) in R.C.C work Main bars – 22mm dia. Straight

4 8.92 35.68 x2.98 kg 106.33 kgL=8.60-2 end cover + 2 hooks= 8.60-(2X4 cm)+(18X22mm) =8.92 m

20 mm dia. bent up bars @2.47kg/m

4 9.48 37.92x 2.47

kg93.66 kg

L=8.60-2 end covers +2 hooks+one depth=8.60-8 cm +(18X20 mm) +60 cm=9.48 cm

12mm dia top bars @0.89 kg/m

2 8.74 17.48x 0.89

kg15.56 kg

L=8.60-2 end covers +2 hooks = 8.60-8 cm+ (18X12 mm)= 8.74m

Stirrups, 10mm dia. bars @0.62 kg/m-at end 12 cm c. to.c.

5x2 2.42 - - -

Next at 20 cm c/c 4x2 2.42 - - -

Total18 x 2.42 40.32 - -

Stirrups 6mm dia. @0.22 kg/m At central remaining length of 5.20m at 35 cm c. to c.

14 2.42 - - -

Total 14 x 2.42 = 33.88 x 0.22 kg

=7.45 kg

Total 250.01 kg

2.5 quintal

L=(65X2+32X2 cm)+2 hooks+extra 30 cm = 194 cm + (18X10 mm ) + 30 cm = 2.42m

ABSTRACT OF ESTIMATED COST

Item No.Particulars of item

of workQuantit

yUnit Rate per cost

Rs P Rs P1 R.C.C. work 1:2:4

excluding steel and its bending but including centering and binding of steel

2.58 cu.m 675 cu.m 1714.5

2Steel bars including (mild steel) in R.C.C work Main bars – 22mm dia. Straight bars @ 2.98 kg/m.

2.5 quintal 515 quintal 1287.5

Total 3002

Add 3% for contingencies and 2% for workcharged Establishment

Grand Total 3152

Description of bars

Shape of Bending Dimensions In cmLength of each (m)

No.Total

Length (m)

Weight(kg)

Main straight bars 22 mm. DIA

8.92 4 35.68 106.33

Main Bent up bars 20mm dia.

9.48 2 18.96 46.83

Main Bent up bars 20mm dia.

9.48 2 18.96 46.83

Top straight Bars 20 mm dia

8.74 2 17.48 15.56

Stirrups 10 mm dia

2.24 18 40.32 25

Stirrups 6 mm dia

14 31.36 6.9

Note -- (i) If centering and shuttering is paid separately , the area and xost can be found as follows Area of centering and shuttering = Bottom and two vertical sides x length + two ends[(40 cm + 2 x 75 cm ) x 8.60 m] + (2 x 40 cm x 75 cm ) = (1.90 x 8.60 ) + ( 2x 0.40 x 0.75 ) := 16.34 + 0.60 = 16.94 sq

Cost of centering and shuttering @ Rs 20.00 per sq.m = 16.94 x20.00 = 338.80 (ii) For over lapping at joints 5% of the whole steel may be provided in the estimate .

RCC COLUMN WITH FOUNDATION

Example 3: Prepare a detailed estimate of a RCC column with foundation footing

1 Earth work in excavation in foundation 1x2.00x2.00x0.83m = 3.32 cu.m

2 Cement concrete 1:4:8 in base 1x2.00x2.00x0.08m= 0.32 cu.m

3 RCC work 1:2:4 in footing excluding steel and its bending but including centering and shuttering and binding steel Bottom square portion 1x2.00x2.00x0.25m = 1.00 cu.mTrapezoidal portion vol.. = h/6(A1+A2+4Am)

0.50/6 {0.22 + 0.352 + 4( 2 + 0.35 )2/ 2} = 0.804 cu.m Total 1.804 cu.m

4RCC Work 1:2:4 in column above G.L excluding steel and its bending but including centering and shuttering and binding steel

Square portion below plinth level 1x0.35x0.35x60 = 0.074cu.m

Cicular portion above plinth level 1x(3.14x0.302)/4x3.30 = 0.233 cu.m

Total 0.307 cu.m

5 Steel reinforcing bars including bending --(I) 12 mm Dia bars @ 0.89 kg in base footing ………………… No of bars = (200 cm - 8 cm ) /15cm + 1 = 14 nos one way L = 200 -2 cover +2 hooks = 200 - 2x4 +18x1.2 = 213.6 = 2.14 cm

(ii) 16 mm dia dowel bars @ 1.58 kgs ………….. 6 nos x 1.27 x 1.58 = 12.04 kg(L= 0.45+0.75-cover + bend = 1.20 - 0.80 + 0.15 = 1.27m

(iii) 16 mm dia bars @ 1.58 kgs in column ………….. 6 nos x 4.10 x 1.58 = 38.87 kg(L= 3.30 +0.60 +0.10 +0.10 = 4.10m

(iv) 10 mm dia bars @ 0.62 kgs in lateral ties ………….. 27 nos x 0.70 x 0.62 = 11.72 kg

Lateral ties No = (3.90/0.15) + 1 = 27 nos Total 115.96kgL = (3.14 x 0.22) = 0.70 m 1.16q

ABSTRACT OF COST

Item noName of items and details of work

Quantity Rate (Rs.P)

Amount (Rs.P)

1Earthwork in excavation in foundation

3.32 cu.m350 per cu.m 11.62

2Cement concrete 1:4:8 in base with brick ballast

0.32cu.m300per cu.m 96

3

RCC work 1:2:4 in footing excluding steel and its bending but including centering and shuttering and binding steel

1.804cu.m625per cu.m

1127.5

4

RCC Work 1:2:4 in column above G.L excluding steel and its bending but including centering and shuttering and binding steel

0.307cu.m590per cu.m

181.13

5Steel reinforcing bars including bending --

1.16q515per cu.m 597.4Total 2013.65

100.68Grand Total 2114.33

Note -- Centering and shuttering if required may be estimated separately as follows

Footing trapezium portion --- 4 nos x (2.00+0.35) / 2 x sloping height 4x1.175xsqrt{ (0.825)2+ 0.522 } = 4.531 sq.m

Square portion above GL upto plinth level 4 nos x 0.35 x 0.45 = 0.630 sq.m

Cicular portion above plinth level --- (3.14 x 0.30 ) x 3.30 = 3.109 sq.m

Total = 8.27sq.m

Add 5% for Contingences and Worcharged Establishment

A detailed estimate of R.C.C. Staircase

Example 4

Details of Measurement and calculation of QuantitiesItem No. Particulars of item and No. length breadth height or depth Quantity Explanatory notes

details of works m m m

1 R.C.C. work 1:2:4excluding steel and its bendingbut including centering andbending steel--Base of flights in ground floor 1 1.2 0.5 0.25 0.15slab of flights(inclined) 2 3.12 1.2 0.15 1.156 bearing 15cmLanding middle and first floor 2 2.7 1.35 0.15 1.094

total 2.4 cu m

2 Brickwork in steps in 1:4cement mortar(cut brickwork) 2 1.2 1/2(.25.25) 0.495 cu m

3 20mm cement plaster 1:6in steps finfshed neat cementfloating--Tread and rise 2 1.2 (.25.25) 10.56Ends of steps 2 1/2(.25.25) 0.41

Total 10.97 sq m

4 2.5cm Nosing in stepsin 1:3 cement mortar 2 1.2 - - 28.8

5 2.5cm c.c floor 1:2:4 finished neat cement floating in landingmiddle and first floor 2 2.7 1.2 - 6.48 sq m

Item No. Particulars of item and No. length breadth height or depth Quantity Explanatory notesdetails of works m m m

6 steel work including bending in rinforce-ment and railing(i)12mm Dia. bar@0.86kg in R.C.C work--main bars in landingNo of bars 120/12=11 11 5.22 L=4.10+0.90+0.18main bars in upper fright andmiddle and first floor landing 11 6.25 L=1.3+3.7+1.05+

.18+0.12=6.25mTop bars first floor landing 11 1.8 L=1.08+.61+9.012

Extrs bsrs first floor middleof each landing 2 1.49 L=1.2+.15-2cover+

2hooks=1.49mTotal 148.950.86 132.56kg

(ii)8mm Dia distributing bars@0.39kg in R.C.C workLower flight 15nos and upper flight 14nos 29 1.27 L=1.2-2cover+

2hooks=1.27mmiddle landing 9nos and upperlanding 8 nos 17 2.77 L=2.70-2cover+

2hooks=2.77m83.92 0.39 32.73kg

(iii) 16mm sq bars in railing@2.01kg 47 0.90 2.01 85.02kg

Total 250.3kg2.503q

7 R.C.C 1:2:4 hand rail includivereinforcement centering and shuttering finished neat cementfloating with moulding 1 6.82 6.82rm L=23.21+0.40=6.82

8 R.C.C 1:2:4 Newal postsincluding steel reinforcementand from work finished Ground floor 1 1 0.1 0.1 0.01first floor 1 0.9 0.1 0.1 0.01

Total 0.02 cu m

9 Caps of Newal post of c.c 2 nos

ABSTRACT ESTIMATE

Item No. Particulars of item and Quantity Unit Rate per costdetails of works Rs P Rs P

1 R.C.C. work 1:2:4excluding steel and its bendingbut including centering andbending steel-- 2.4 cu m 775 /cu m 1860

2 Brickwork in steps in 1:4cement mortar(cut brickwork) 0.495 cu m 365 /cu m 180.68

3 20mm cement plaster 1:6in steps finfshed neat cementfloating-- 10.97 sq m 9.5 /sq m 104.22

4 2.5cm Nosing in stepsin 1:3 cement mortar 28.8 r m 5.5 /r m 158.4

5 2.5cm c.c floor 1:2:4 finished neat cement floating 6.48 sq m 18 /sq m 116.64

6 steel work including bending in rinforce-ment and railing 2.503 q 515 /q 1289.05

7 R.C.C 1:2:4 hand rail includivereinforcement centering and shuttering finished neat cementfloating with moulding 6.82 r m 24 /r m 163.68

8 R.C.C 1:2:4 Newal postsincluding steel reinforcementand from work 0.02 cu m 675 /cu m 13.5

9 Caps of Newal post of c.c 2 nos 10 each 20Total 3905.17

Add 3%for contingenvies 117.18Add 2% Workcharged Establishment 78.12

Grand Total 4101.47