Rate analysis
Extra for depth of manholes dismantled :
DSR rate₹2,229.20per metre depth
Circular manhole 122 cm diameter and beyond 1.68 m depth (up to 2.29 m depth)
- Item code
- 19.25.4
- Sub-head
- SH 19 · DRAINAGE
- Unit
- metre depth
- Source row
- 2853
Cost components
| Code | Description | Unit | Quantity | Rate | Amount |
|---|---|---|---|---|---|
| Details of cost for 0.61 metre | |||||
| Dismantling cement concrete 1:3:6 (1 Cement : 3 coarse sand : 6 graded stone aggregate 40mm nominal size) | |||||
| 1.98x1.98x0.30 = 1.178 cum. Say 1.18 cum. | |||||
| 15.2.1 | (Rate as per item No.15.2.1 of SH. dismantling and Demolishing) | cum | 1.18 | ₹2,434.25 | ₹2,872.42 |
| Dismantling IInd class brick work in cement mortar 1:4 (1 Cement : 4 Coarse sand) | |||||
| Curved on plan | |||||
| 3.14x1.45x0.85x0.23 = 0.891 | |||||
| 3.14x(1.45+0.79)/2x1.32x0.23 = 1.069 | |||||
| Total = 0.891 + 1.069 = 1.96 cum | |||||
| Duduct arch ring and portion of pipe | |||||
| 2x1/2x3.14x0.25mx0.23x0.10 m = 0.018 cum | |||||
| 2x3.14/4x(0.15)²x0.23 = 0.008 cum | |||||
| Total deduction = 0.026 cum | |||||
| Net quantity 1.96-0.026 = 1.934 Say 1.93 cum | |||||
| Qty in arch | |||||
| 2x1/2x3.14x0.25 m x0.23x0.10 m | |||||
| = 0.018 cum Say 0.02 cum | |||||
| Total = 1.93 + 0.02 = 1.97 cum | |||||
| 15.7.4 | Rate as per item no 15.7.4 of SH : Dismantling and demolishing | cum | 1.97 | ₹2,060.20 | ₹4,058.59 |
| Dismantling cemnet concrete 1:2:4 ( 1 cement : 2 coarse sand : 4 graded stone aggregate 20 mm nominal size | |||||
| For benching : | |||||
| 3.14/4x(1.22)²x0.20 = 0.234 cum | |||||
| [(2x8.133)/360]x(4/3)x3.14x(0.61)³ | |||||
| =0.043 cum | |||||
| = 0.277 cum | |||||
| Less pipe :1.22x3.14/4x(0.15)²(-) = 0.0216 cum | |||||
| Net qty== 0.2554 cum Say 0.26 cum | |||||
| For fixing cover : 3.14/4 x d2 x thickness | |||||
| 0.7854x1.020x1.020x0.15 m =0.123 cum | |||||
| Less cover 3.14/4x(0.28)² x 0.15 m : = (-)0.037 cum | |||||
| Net qty= 0.086 cum Say 0.09 cum | |||||
| Total = 0.26 + 0.09 = 0.35 cum | |||||
| 15.2.1 | Rate as per item no 15.2.1 of SH : Dismantling | cum | 0.35 | ₹2,434.25 | ₹851.99 |
| 9999 | Removal of SFRC cover | L.S. | 7.15 | ₹2.27 | ₹16.23 |
| 9999 | Removal of M.S. foot rests | L.S. | 8.09 | ₹2.27 | ₹18.36 |
| Deduct cost of dismantling manhole 1.68m deep | |||||
| 19.24.4 | Rate as per Item No.19.24.4 of SH: DRAINAGE | each | -1 | ₹6,472.40 | -₹6,472.40 |
Rate build-up
| TOTAL | ₹1,345.19 |
| Add 1 % Water charges on "W-A" | ₹0.35 |
| TOTAL | ₹1,345.54 |
| Add GST on "X-A" (multiplying factor 0.2127) | ₹7.43 |
| TOTAL | ₹1,352.97 |
| Add 15% CPOH on "Y-A" | ₹6.36 |
| TOTAL | ₹1,359.33 |
| Add Cess @ 1% on "Z-A" | ₹0.49 |
| Cost of manhole 0.61m depth | ₹1,359.82 |
| Cost per metre depth | ₹2,229.21 |
| Say | ₹2,229.20 |