Cleaning of under ground sump, Over Head R.C.C. Tank ( independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-Charge. The cleaning shall consist following operations:- (i) Tank shall be emptied of water by pumping & bottom shall be cleaned of silt and other deposits. (ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water. (iii) Chlorination of RCC internal surface by liquid chlorine. (iv) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface. (v) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge
- Item number
- 14.78
- Priced inputs
- 13
- Derived rate
- ₹84.85/ SQM
Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 14.78 (Cleaning of under ground sump, Over Head R.C.C. Tank ( independent staging) including disposal of slit and rubbish, all as per direction of Engineer-in-Charge. The cleaning shall consist following operations:- (i) Tank shall be emptied of water by pumping & bottom shall be cleaned of silt and other deposits. (ii) Entire surface area of the sump shall then scrubbed thoroughly with wire brush etc. and pressure washed with water. (iii) Chlorination of RCC internal surface by liquid chlorine. (iv) The treated surface shall be dried using air jetting and all loose particles shall be removal from the surface. (v) Finally the surface shall be treated with ultraviolet radiation etc. as per direction of Engineer-in-Charge) is derived from 13 priced inputs and works out to ₹84.85 per sqm after water charges, GST, CPOH and cess. The full build-up is below.
- Let a underground tank of capacity 272000
- litre or 272 KL and area of tank is 570sqm
- (a) Dewater and slit cleaning
- Considering through pumping 20% of
- water to be lifted, water discharge =(272 x
- 20/100=54.40KL)
- 4000 litres per hours , = (54.4/4 =13.6 hours =
- @ 8 hours/ day = 1.7 day)
- (b) Scrabing the internal surface of tank
- (c) Bleaching
- (d) Air jetting
- (e) Ultra Violet Radiation
- Cost of pumping water with pump of capacity
| Code | Type | Input | Unit | Quantity | Rate (INR) | Amount (INR) |
|---|---|---|---|---|---|---|
| 0011 | MACH | Hire charges of Pump set of capacity 4000 litres/hour | day | 1.7 | 800.00 | 1,360.00 |
| 0114 | LAB | Beldar | day | 10.88 | 736.00 | 8,007.68 |
| 0114 | LAB | Beldar | day | 5.13 | 736.00 | 3,775.68 |
| 0115 | LAB | Coolie | day | 2.28 | 736.00 | 1,678.08 |
| 0101 | LAB | Bhisti | day | 2.28 | 816.00 | 1,860.48 |
| 9999 | MAT | Sundries | L.S. | 142.5 | 2.27 | 323.48 |
| 1301 | MAT | Bleaching powder | quintal | 0.57 | 1,700.00 | 969.00 |
| 0006 | MACH | Hire charges of Spraying machine including electric charges | day | 14.25 | 250.00 | 3,562.50 |
| 0138 | LAB | Sprayer (for bitumen, tar etc.) | day | 14.25 | 816.00 | 11,628.00 |
| 0058 | MACH | Air compressor | hour | 2 | 250.00 | 500.00 |
| 0114 | LAB | Beldar | day | 0.25 | 736.00 | 184.00 |
| 0085 | MACH | Using cost of Ultra Violet Radiation tube | hour | 0.5 | 200.00 | 100.00 |
| 0114 | LAB | Beldar | day | 0.063 | 736.00 | 46.37 |
- TOTAL
- 33,995.27
- Add 1 % Water charges on “W”
- +339.95
- TOTAL
- 34,335.22
- Add GST on “X” (multiplying factor 0.2127)
- +7,303.10
- TOTAL
- 41,638.32
- Add 15% CPOH on “Y”
- +6,245.75
- TOTAL
- 47,884.07
- Add Cess @ 1% on “Z”
- +478.84
- Cost of 570 sqm
- 48,362.91
- Cost of 1 sqm
- 84.85
- SAY
- ₹84.85
- PUBLISHED BY
- Central Public Works Department (CPWD)
- EDITION
- DAR 2023 · Delhi
- EFFECTIVE
- 2023-09-14Both volumes are dated 14 September 2023 on their title pages.
- RETRIEVED
- 2026-09-08
- GST
- 18%, added in each item's build-up
- PRINTED PAGE
- 1085
From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 1085. For reference only. CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.
Use this rate in a live estimate
This is the CPWD base analysis. A real estimate adjusts it for the project's inputs and the current cost index, then maps it to the tender's BOQ. We can do this for you: send the tender and we return a priced BOQ on the applicable schedule, with rate build-ups and an engineer's sign-off.