Rate analysis
Providing and laying cement concrete 1:5:10 (1 cement : 5 coarse sand : 10 graded stone aggregate 40 mm nominal size) up to haunches of S.W. pipes including bed concrete as per standard design :
DSR rate₹743.10per metre
150 mm diameter S.W. pipe
- Item code
- 19.3.2
- Sub-head
- SH 19 · DRAINAGE
- Unit
- metre
- Source row
- 236
Cost components
| Code | Description | Unit | Quantity | Rate | Amount |
|---|---|---|---|---|---|
| Details of cost for 10 metre length pipe | |||||
| Area = WxD1 + 2x½xR Cot QxR - [R²/2(3.14/2-Q)] - (3.14/2)R² | |||||
| = WD1 + R²(Cot Q) - R²(3.14/2 - Q)- (3.14/2)R² | |||||
| = WD1 + R²(Cot Q - 3.14 + Q) | |||||
| Where Sin Q = [R/(W/2)] = 2R/W | |||||
| W = D + X ; X = 300 mm, D = 150 + 16+ 16 = 182 mm | |||||
| W = 182 + 300 = 482 mm | |||||
| D1 = Depth = 150 + (½ x 182) = 241 mm | |||||
| R = 91 mm | |||||
| Sin Q = (2x91)/482 = 0.3776 therefor Q = 22°12' | |||||
| Hence Tan Q = 0.4081 | |||||
| Area = 482 x 241 + (91)² (Cot Q - 3.14 + Q) | |||||
| = [116162 + 8281 (1/0.4081 - 180°+ 22°12')] sqmm | |||||
| = [116162 + 8281 (2.45 - 157°48' x3.14/180)] sqmm | |||||
| = [116162 + 8281 x (2.45-2.75)] sqmm | |||||
| = [116162 + 8281 x (-0.30)] sqmm | |||||
| = (116162 - 2484.3) sqmm = 113677.7 sqmm | |||||
| For 10 m length qty. of concrete reqd. | |||||
| = 0.1136777x10 = 1.136777 cum. Say 1.14 cum | |||||
| 4.1.10 | Rate as per item no 4.1.10 of SH : Concrete Work | cum | 1.14 | ₹6,518.60 | ₹7,431.20 |
Rate build-up
| Say 113677.7 sqmm or 0.1136777 sqm | — |
| Cost of 10 metres | ₹7,431.20 |
| Cost per metre | ₹743.12 |
| Say | ₹743.10 |