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CPWD Analysis of Rates · Drainage

Constructing brick masonry circular manhole 1.22 m internal dia at bottom and 0.56 m dia at top in cement mortar 1:4 (1 cement :4 coarse sand) inside cement plaster 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement foundation concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) and making necessary channel in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) finished with a floating coat of neat cement, all complete as per standard design : 1.68 m deep with SFRC Cover and frame (heavy duty HD-20 grade designation) 560 mm internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than 182 kg. fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) including centering, shuttering all complete. (Excavation, foot rests and 12 mm thick cement plaster at the external surface shall be paid for separately)

With common burnt clay F.P.S. (non modular) bricks of class designation 7.5

CPWD DAR 2023›Drainage
Item number
19.11.1.1
Analysis basis
Details of cost for 1 manhole
Priced inputs
11
Derived rate
₹24,702.75 / manhole

Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 19.11.1.1 — Constructing brick masonry circular manhole 1.22 m internal dia at bottom and 0.56 m dia at top in cement mortar 1:4 (1 cement :4 coarse sand) inside cement plaster 12 mm thick with cement mortar 1:3 (1 cement : 3 coarse sand) finished with a floating coat of neat cement foundation concrete 1:3:6 (1 cement : 3 coarse sand : 6 graded stone aggregate 40 mm nominal size) and making necessary channel in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) finished with a floating coat of neat cement, all complete as per standard design : 1.68 m deep with SFRC Cover and frame (heavy duty HD-20 grade designation) 560 mm internal diameter conforming to I.S. 12592, total weight of cover and frame to be not less than 182 kg. fixed in cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size) including centering, shuttering all complete. (Excavation, foot rests and 12 mm thick cement plaster at the external surface shall be paid for separately) : With common burnt clay F.P.S. (non modular) bricks of class designation 7.5 — is derived from 11 priced inputs for 1 manhole and works out to ₹24,702.75 per manhole after water charges, GST, CPOH and cess. The full build-up is below.

  • Cement concrete 1:3:6 (1 cement : 3
  • coarse sand : 6 graded stone aggregate
  • 40mm nominal size)
  • 1.98x1.98x0.30 m = 1.178 cum Say 1.18
  • cum
  • Brick work with bricks of class designation 7.5 in cement mortar 1:4 (1 cement :
  • 4 coarse sand)
  • Curved on plan
  • 3.14x1.45x0.24x0.23 = 0.251
  • 3.14x(1.45+0.79)/2x1.32x0.23 = 1.069
  • Total= 1.320
  • Duduct arch ring and portion of pipe
  • 2x½x3.14x0.25mx0.230x0.10 m = 0.018
  • cum
  • 2x3.14/4x(0.15)²x0.230 = 0.008 cum
  • Total = 0.026 cum
  • Net quantity 1.320-0.026 = 1.294 Say
  • 1.29 cum
  • Brick work in arches with 7.5 class designation brick in cement mortar 1:3 ( 1
  • cement : 3 coarse sand )
  • 2x½x3.14x0.25 m x0.230x0.10 m = 0.018
  • cum Say 0.02 cum
  • Cement concrete 1:2:4(1 cement : 2
  • coarse sand : 4 graded stone aggregate
  • 20 mm nominal size )
  • For benching :
  • 3.14/4x(1.22)²x0.20 = 0.234 cum
  • [(2x8.133)/360]x(4/3)x3.14x(0.61)³
  • =0.043 cum
  • Total= 0.277 cum
  • 0.0216 cum
  • Total= 0.2554 cum Say 0.26 cum
  • Cement concrete 1:2:4 (1 cement : 2
  • coarse sand : 4 graded stone aggregate
  • 20 mm nominal size)
  • For fixing cover : 3.14/4 x d² x thickness
  • 3.14/4x(1.020)²x0.15 m =0.123 cum
  • 0.037 cum
  • Total= 0.086 cum Say 0.09 cum
  • 12 mm cement plaster 1:3 (1 cement : 3
  • coarse sand) finished with floating coat of
  • neat cement
  • 3.14x(1.136+0.56)/2x1.216 = 3.241 sqm
  • 3.14x0.56x0.075 = 0.13 sqm
  • 3.14x(1.136)²/4-1.136x1/2x3.14x0.15 =
  • 1.112 sqm
  • Total= 4.483 sqm Say 4.48 sqm
  • Extra labour for making channel :
  • S.F.R.C manhole cover
  • Less pipe :1.22x3.14/4x(0.15)²(-) =
  • Less cover 3.14/4x(0.28)² x 0.15 m : (-) =
CodeInputUnitQuantityRate (INR)Amount (INR)
Rate as per item no 4.1.6 of SH : Concrete WorkRate as per item 4.1.6Sub-analysiscum1.187,178.758,470.93
Rate as per item no 6.1.1 of SH : Brick WorkRate as per item 6.1.1Sub-analysiscum1.297,370.659,508.14
Rate as per item no 6.9 of SH : Brick WorkRate as per item 6.9Sub-analysiscum0.0215,077.95301.56
Rate as per item no. 4.1.3 of SH : concrete WorkRate as per item 4.1.3Sub-analysiscum0.267,878.502,048.41
Rate as per item no. 4.1.3 of SH : Concrete WorkRate as per item 4.1.3Sub-analysiscum0.097,878.50709.07
Rate as per item no 13.9.1 of SH : FinishingRate as per item 13.9.1Sub-analysissqm4.48449.552,013.98
0123Mason 1st classMason 1st classLabourday0.1897.0089.70
0124Mason 2nd classMason 2nd classLabourday0.1816.0081.60
7135Circular shape 560 mm dia precast R.C.C. manhole cover with frame - H.D. - 20Materialeach1935.00935.00
9977CARRIAGEMaterialL.S.6.892.2715.64
9999SundriesMaterialL.S.16.92.2738.36
TOTAL
24,212.39
Add 1 % Water charges on “W-A”
11.60
TOTAL
24,223.99
Add GST on “X-A” (multiplying factor 0.2127)
249.26
TOTAL
24,473.25
Add 15% CPOH on “Y-A”
213.17
TOTAL
24,686.42
Add Cess @ 1% on “Z-A”
16.34
Cost of one manhole
24,702.76
Say
24,702.75

From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 1730. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.

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