Providing corrugated G.S. sheet roofing including vertical / curved surface fixed with polymer coated J or L hooks, bolts and nuts 8 mm diameter with bitumen and G.I. limpet washers or with G.I. limpet washers filled with white lead, including a coat of approved steel primer and two coats of approved paint on overlapping of sheets complete (up to any pitch in horizontal/ vertical or curved surfaces), excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required
- Item number
- 12.1.2
- Analysis basis
- a roof
- Priced inputs
- 21
- Derived rate
- ₹1,257.55/ SQM
Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 12.1.2 (Providing corrugated G.S. sheet roofing including vertical / curved surface fixed with polymer coated J or L hooks, bolts and nuts 8 mm diameter with bitumen and G.I. limpet washers or with G.I. limpet washers filled with white lead, including a coat of approved steel primer and two coats of approved paint on overlapping of sheets complete (up to any pitch in horizontal/ vertical or curved surfaces), excluding the cost of purlins, rafters and trusses and including cutting to size and shape wherever required 0.80 mm thick with zinc coating not less than 275 gm/m²) is derived from 21 priced inputs for a roof and works out to ₹1,257.55 per sqm after water charges, GST, CPOH and cess. The full build-up is below.
- side 18.09x5.10m and slop being flatter than
- 1 vertical to 2.5 horizontal
- Area of roof = 2x18.09x5.1 = 184.518 sqm.
- Details of length and breadth.
- Length 26(laps)x0.135(each lap)=3.51
- Width of Corrugator sheet with 10
- corrugation measured end to end = 0.8 metres 27 (nos. of sheets)x0.80 (width of sheet)
- = 21.60 length
- Length = 18.09
- Breadth on one sideC.G.S. Sheet 1 No. of = 2.5 metres length+
- C.G.S. Sheet 1 No. of = 2.8 metres length
- Total = 5.3 metres
- breadth = 5.1m
- C.G.S. Sheets 0.8mm thick
- 2x27=54nos. @15.82Kg.each
- Total = 854.38Kg(X)
- 2.5mx0.9m is the size of plain G.I.sheet
- which on being corrugated will become
- 2.5mx0.8m (The size of plain sheet is taken
- because the weight is available only of plain
- sheets) (Refer I.S. Code 277-1962)
- 2x27=54nos. of size.
- 2.8x0.9@17.72Kg each = 956.8Kg (Y)
- Total of (X)+(Y) = 1811.16Kg.
- Total = 1901.72Kg = 19.02q
- G.I.Seam bolts and nuts 60cm
- centre to centre zig-zag i.e. 30cm
- centre to centre straight
- Breadth is 5.1metre
- No. of bolts in one lap 5.1/0.3 =17 nos.
- 2x26(laps)x17 nos. = 884 nos.
- (No. of purlins to be used 5 on either
- side)2x5x27 (No. of sheets)x23 Nos. of bolts
- in each sheet = 810 Nos
- (total of seam and J bolts)
- 884+810=1694
- Less laps = 3.51
- Deduct end lap of 20cm (-)0.2 metres
- Add wastage @5% = 90.56Kg.
| Code | Type | Input | Unit | Quantity | Rate (INR) | Amount (INR) |
|---|---|---|---|---|---|---|
| 3050 | MAT | Galvanised steel corrugated sheets | quintal | 19.02 | 6,105.00 | 1,16,117.10 |
| 1022 | MAT | Galvanised steel bolts & nuts 6 mm dia and 25 mmlong round head with slotsGalvanised steel bolts & nuts 6 mm dia and 25 mm long round head with slots | 10 Nos | 88.4 | 38.00 | 3,359.20 |
| 1023 | MAT | Galvanised steel J or L hooks 8 mm dia | 10 Nos | 81 | 130.00 | 10,530.00 |
| 1207 | MAT | G.I. Limpet washer | 100 Nos | 16.94 | 21.00 | 355.74 |
| 1208 | MAT | Bitumen washer | 100 Nos | 16.94 | 30.00 | 508.20 |
| 9977 | MAT | Carriage of bolts and washers | L.S. | 26.91 | 2.27 | 61.09 |
| 9999 | MAT | Sundries | L.S. | 53.82 | 2.27 | 122.17 |
| 0130 | LAB | Mistry | day | 1.3 | 897.00 | 1,166.10 |
| 0112 | LAB | Carpenter 2nd class | day | 15.5 | 816.00 | 12,648.00 |
| 0114 | LAB | Beldar | day | 15.5 | 736.00 | 11,408.00 |
| 4202 | MAT | Red oxide Zinc chromate primer | litre | 2.53 | 140.00 | 354.20 |
| 9977 | MAT | Carriage of material | L.S. | 0.52 | 2.27 | 1.18 |
| 0131 | LAB | Painter | day | 1.13 | 816.00 | 922.08 |
| 0115 | LAB | Coolie | day | 1.13 | 736.00 | 831.68 |
| 9999 | MAT | Brushes, sand papers i/c sundries | L.S. | 50.57 | 2.27 | 114.79 |
| 0845 | MAT | Roofing paint for iron sheets in red colour | litre | 3.75 | 135.00 | 506.25 |
| 9977 | MAT | Carriage of paint | L.S. | 6.76 | 2.27 | 15.35 |
| 0131 | LAB | Painter | day | 2.53 | 816.00 | 2,064.48 |
| 0115 | LAB | Coolie | day | 2.53 | 736.00 | 1,862.08 |
| 9999 | MAT | Brushes and Sandpapers | L.S. | 31.98 | 2.27 | 72.59 |
| 9999 | MAT | Sundries | L.S. | 38.09 | 2.27 | 86.46 |
- TOTAL
- 1,63,106.74
- Add 1 % Water charges on “W”
- +1,631.07
- TOTAL
- 1,64,737.81
- Add GST on “X” (multiplying factor 0.2127)
- +35,039.73
- TOTAL
- 1,99,777.54
- Add 15% CPOH on “Y”
- +29,966.63
- Add 15% CPOH on “Y”
- +2,29,744.17
- Add Cess @ 1% on “Z”
- +2,297.44
- Cost of 184.518 Sqm.
- 2,32,041.61
- Cost of 1 Sqm.
- 1,257.56
- SAY
- ₹1,257.55
- 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
- 852
From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 852. For reference only. CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.
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