Rate analysis
Providing and laying roof insulation with 40 mm thick impervious sprayed, closed cell free Rigid Polyurethane foam over deck insulation conforming to IS - 12432 Pt. III (density of foam being 40-45 kg/ cum), over a coat of polyurethane primer applied @ 6-8 sqm per litre, laying 400 G polythene sheet over PUF spray and providing a wearing course of 40 mm thick cement screed 1:2:4 (1 cement : 2 coarse sand : 4 stone aggregate 20 mm nominal size) in chequered rough finish, in panels of 2.5 m x 2.5 m and embedding with 24 G wire netting and sealing the joints with polymerized mastic, all complete as per direction of Engineer-in-Charge.
DSR rate₹1,570.00per sqm
- Item code
- 12.56
- Sub-head
- SH 12 · ROOFING
- Unit
- sqm
- Source row
- 3234
Cost components
| Code | Description | Unit | Quantity | Rate | Amount |
|---|---|---|---|---|---|
| Details of cost for 1 sqm | |||||
| MATERIAL | |||||
| 7050 | PU Primer | sqm | 1 | ₹54.00 | ₹54.00 |
| Area for PU Spray = 1 sqm+ | |||||
| Add for wastage @ 10%=0.10 sqm | |||||
| Total=1.10 sqm | |||||
| 7051 | 40 mm (average) PU spray having 40-45 kg/m3 density | sqm | 1.1 | ₹385.00 | ₹423.50 |
| 7052 | GI wire netting 3/4" x 24 G | sqm | 1 | ₹28.00 | ₹28.00 |
| 9999 | Sundries | L.S. | 6.71 | ₹2.27 | ₹15.23 |
| 9999 | Polymerized mastic for all joints | L.S. | 20.13 | ₹2.27 | ₹45.70 |
| 7053 | 400 G polythene sheet | sqm | 1 | ₹13.00 | ₹13.00 |
| 9999 | Cement | L.S. | 44.67 | ₹2.27 | ₹101.40 |
| 9999 | Graded stone | L.S. | 13.75 | ₹2.27 | ₹31.21 |
| 9999 | Sand | L.S. | 21.48 | ₹2.27 | ₹48.76 |
| 9977 | Carriage of material | L.S. | 16.78 | ₹2.27 | ₹38.09 |
| LABOUR | |||||
| 9999 | For PU spray | L.S. | 80.54 | ₹2.27 | ₹182.83 |
| 9999 | For cement screed with Polythene sheet | L.S. | 53.69 | ₹2.27 | ₹121.88 |
Rate build-up
| TOTAL | ₹1,103.60 |
| Add 1 % Water charges on "W" | ₹11.04 |
| TOTAL | ₹1,114.64 |
| Add GST on "X" (multiplying factor 0.2127) | ₹237.08 |
| TOTAL | ₹1,351.72 |
| Add 15% CPOH on "Y" | ₹202.76 |
| TOTAL | ₹1,554.48 |
| Add Cess @ 1% on "Z" | ₹15.54 |
| Cost of 1 sqm | ₹1,570.02 |
| Say | ₹1,570.00 |