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₹1,016.90per metre
250 mm diameter S.W. pipe
- Item code
- 19.3.4
- 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 = 250 + 20 + 20 = 290 mm | |||||
| W = 290 + 300 = 590 mm | |||||
| D1 = Depth = 150 + (½ x 290) = 295 mm | |||||
| R = 145 mm | |||||
| Sin Q = (2x145)/590 = 0.49154 | |||||
| therefor Q = 29°26' | |||||
| Hence Tan Q = 0.5635 | |||||
| Area = 590 x 295 + (145)² (Cot Q - 3.14 + Q) | |||||
| = [174050 + 21025 (1/0.5635 - 180°+ 29°26')] sqmm | |||||
| = [174050 + 21025 (1.77 - 150°34' x 3.14/180)] sqmm | |||||
| = [174050 + 21025 x (1.77-2.63)] sqmm | |||||
| = [174050 + 21025 x (-0.86)] sqmm | |||||
| = (174050 - 18081.5) sqmm | |||||
| = 155968.5 sqmm | |||||
| For 10 m length qty. of concrete reqd. = 0.156x10 = 1.56 cum | |||||
| 4.1.10 | Rate as per item no 4.1.10 of SH : Concrete Work | cum | 1.56 | ₹6,518.60 | ₹10,169.02 |
Rate build-up
| Say 155968 sqmm or 0.156 sqm | — |
| Cost of 10 metres | ₹10,169.02 |
| Cost per metre | ₹1,016.90 |
| Say | ₹1,016.90 |