CPWD Analysis of Rates · Drainage
Dismantling of manhole including R.C.C. top slab, C.I. cover with frame, including stacking of useful materials near the site and disposal of unserviceable materials within 50 m lead as per direction of Engineer-in-charge
Circular manhole 122 cm diameter and 1.68 m deep
- Item number
- 19.24.4
- Analysis basis
- Details of cost of a manhole 1.22 m inter-
- Priced inputs
- 5
- Derived rate
- ₹6,472.40
Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 19.24.4 — Dismantling of manhole including R.C.C. top slab, C.I. cover with frame, including stacking of useful materials near the site and disposal of unserviceable materials within 50 m lead as per direction of Engineer-in-charge: Circular manhole 122 cm diameter and 1.68 m deep — is derived from 5 priced inputs and works out to ₹6,472.40 after water charges, GST, CPOH and cess. The full build-up is below.
- nal diameter 1.68 m deep
- Dismantling of cement concrete 1:3:6 (1
- cement : 3 coarse sand : 6 aggregate
- stone 40 mm nominal size)
- 1.98x1.98x0.30 m = 1.178 cum Say 1.18
- cum
- Dismantling of second class brick work 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
- = 1.320
- Duduct arch ring and portion of pipe
- 2x½x3.14x0.25mx0.23x0.10 m = 0.018
- cum
- 2x3.14/4x(0.15)²x0.23 = 0.008 cum
- = 0.026 cum
- Net quantity 1.320-0.026 = 1.294 Say
- 1.29 cum
- Brick work in arches
- 2x1/2x3.14x0.25 m x0.230x0.10 m
- = 0.018 cum Say 0.02 cum
- Total = 1.294+0.02 = 1.1.314 cum. Say
- 1.131 cum
- Dismantaling cement concrete 1:2:4
- (1 cement : 2 coarse sand : 4 gradeed
- 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
- Total =0.043 cum
- 0.024 + 0.043 = 0.277 cum
- 0.0216 cum
- Net Qty. = 0.277 - 0.0216 = 0.26 cum
- In cover fixing 0.7854x1.020x1.020x0.15
- m =0.123 cum
- (-) 0.037 cum
- = 0.086 cum Say 0.09 cum
- Total = 0.26 + 0.09 = 0.35 cum
- Less pipe :1.22x3.14/4x(0.15)² = (-)
- Less cover 3.14/4x(0.28)² x 0.15 m : =
| Code | Input | Unit | Quantity | Rate (INR) | Amount (INR) |
|---|---|---|---|---|---|
| Rate as per item no 15.2.1 of SH : DismantlingRate as per item 15.2.1Sub-analysis | cum | 1.18 | 2,434.25 | 2,872.42 | |
| Rate as per item no. 15.7.4 of SH :dismantling and dimolishingRate as per item 15.7.4Sub-analysis | cum | 1.31 | 2,060.20 | 2,698.86 | |
| Rate as per item no 15.2.1 of SH : Demolishing and dismantlingRate as per item 15.2.1Sub-analysis | cum | 0.35 | 2,434.25 | 851.99 | |
| 9999 | Removal of S.F.R.C cover with frame size 560 mm diameter (medium duty)Material | L.S. | 7.15 | 2.27 | 16.23 |
| 9999 | Removal of M.S. foot restsMaterial | L.S. | 8.06 | 2.27 | 18.30 |
- TOTAL
- 6,457.80
- Add 1 % Water charges on “W-A”
- 0.35
- TOTAL
- 6,458.15
- Add GST on “X-A” (multiplying factor 0.2127)
- 7.42
- TOTAL
- 6,465.57
- Add 15% CPOH on “Y-A”
- 6.35
- TOTAL
- 6,471.92
- Add Cess @ 1% on “Z-A”
- 0.49
- Cost of one no
- 6,472.41
- Say
- 6,472.40
From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 1757. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.
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