Rate analysis
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.
DSR rate₹1,087.65per Sqm
0.63 mm thick with zinc coating not less than 275 gm/ m²
- Item code
- 12.1.3
- Sub-head
- SH 12 · ROOFING
- Unit
- Sqm
- Source row
- 4
Cost components
| Code | Description | Unit | Quantity | Rate | Amount |
|---|---|---|---|---|---|
| Details of cost for a roof with each sloping 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 | |||||
| Less laps = 3.51 | |||||
| Length = 18.09 | |||||
| Breadth on one side- | |||||
| C.G.S. Sheet 1 No. of = 2.5 metres length+ | |||||
| C.G.S. Sheet 1 No. of = 2.8 metres length | |||||
| = 5.3 metres | |||||
| Deduct end lap of 20cm (-)0.2 metres | |||||
| breadth = 5.1m | |||||
| MATERIAL | |||||
| C.G.S.Sheets 0.63 mm thick | |||||
| 2x27=54nos. @12.82Kg.each = 692.28 Kg(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@13.38Kg each = 775.44Kg (Y) | |||||
| Total of (X)+(Y) = 1467.72Kg. | |||||
| Add wastage @5% = 73.39Kg. | |||||
| Total = 1541.11Kg = 15.41q | |||||
| 3050 | Galvanised steel corrugated sheets | quintal | 15.41 | ₹6,105.00 | ₹94,078.05 |
| 2302 | Carriage of G.I. sheet and accessories | tonne | 1.54 | ₹0.00 | ₹0.00 |
| G.I. scam 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. | |||||
| 1022 | Galvanised steel bolts & nuts 6 mm dia and 25 mm long round head with slots | 10 Nos | 88.4 | ₹38.00 | ₹3,359.20 |
| 1023 | Galvanised steel J or L hooks 8 mm dia | 10 Nos | 81 | ₹130.00 | ₹10,530.00 |
| (No. of purlins to be used 5 on either side)2x5x27 (No. of sheets)x23 Nos. of bolts in each sheet = 810 Nos | |||||
| 1207 | G.I. Limpet washer | 100 Nos | 16.94 | ₹21.00 | ₹355.74 |
| (total of seam and J bolts) | |||||
| 884+810= 1694 | |||||
| 1208 | Bitumen washer | 100 Nos | 16.94 | ₹30.00 | ₹508.20 |
| 9977 | Carriage of bolts and washers | L.S. | 26.91 | ₹2.27 | ₹61.09 |
| 9999 | Sundries | L.S. | 53.82 | ₹2.27 | ₹122.17 |
| LABOUR | |||||
| 0130 | Mistry | day | 1.3 | ₹897.00 | ₹1,166.10 |
| 0112 | Carpenter 2nd class | day | 15.5 | ₹816.00 | ₹12,648.00 |
| 0114 | Beldar | day | 15.5 | ₹736.00 | ₹11,408.00 |
| 4202 | Red oxide Zinc chromate primer | litre | 2.53 | ₹140.00 | ₹354.20 |
| 9977 | Carriage of material | L.S. | 0.52 | ₹2.27 | ₹1.18 |
| 0131 | Painter | day | 1.13 | ₹816.00 | ₹922.08 |
| 0115 | Coolie | day | 1.13 | ₹736.00 | ₹831.68 |
| 9999 | Brushes, sand papers i/c sundries | L.S. | 50.57 | ₹2.27 | ₹114.79 |
| 0845 | Roofing paint for iron sheets in red colour | litre | 3.75 | ₹135.00 | ₹506.25 |
| 9977 | Carriage of paint | L.S. | 6.76 | ₹2.27 | ₹15.35 |
| 0131 | Painter | day | 2.53 | ₹816.00 | ₹2,064.48 |
| 0115 | Coolie | day | 2.53 | ₹736.00 | ₹1,862.08 |
| 9999 | Brushes and Sandpapers | L.S. | 31.98 | ₹2.27 | ₹72.59 |
| 9999 | Sundries | L.S. | 38.09 | ₹2.27 | ₹86.46 |
Rate build-up
| TOTAL | ₹1,41,067.69 |
| Add 1 % Water charges on "W" | ₹1,410.68 |
| TOTAL | ₹1,42,478.37 |
| Add GST on "X" (multiplying factor 0.2127) | ₹30,305.15 |
| TOTAL | ₹1,72,783.52 |
| Add 15% CPOH on "Y" | ₹25,917.53 |
| TOTAL | ₹1,98,701.05 |
| Add Cess @ 1% on "Z" | ₹1,987.01 |
| Cost of 184.518 Sqm. | ₹2,00,688.06 |
| Cost of 1 Sqm. | ₹1,087.63 |
| Say | ₹1,087.65 |