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₹1,173.35per metre
300 mm diameter S.W. pipe
- Item code
- 19.3.5
- 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 = 300 + 25 + 25 = 350 mm | |||||
| W = 350 + 300 = 650 mm | |||||
| D1 = Depth = 150 + (½ x 350) = 325 mm | |||||
| R = 175 mm | |||||
| Sin Q = (2x175)/650 = 0.5385 therefor Q = 32°34' | |||||
| Hence Tan Q = 0.6387 | |||||
| Area = 650 x 325 + (175)² (Cot Q - 3.14 + Q) | |||||
| = [211250 + 30625 (1/0.6387 - 180°+ 32°34')] sqmm | |||||
| = [211250 + 30625 (1.566 - 147°26' x 3.14/180)] sqmm | |||||
| = [211250 + 30625 x (1.566-2.571)] sqmm | |||||
| = [211250 + 30625 x (-1.005)] sqmm | |||||
| = [211250 - 30778.13) sqmm | |||||
| = 180471.87 sqmm | |||||
| For 10 m length qty. of concrete reqd. = 0.180x10 = 1.80 cum | |||||
| 4.1.10 | Rate as per item no 4.1.10 of SH : Concrete Work | cum | 1.8 | ₹6,518.60 | ₹11,733.48 |
Rate build-up
| Say 0.180 sqm | — |
| Cost of 10 metres | ₹11,733.48 |
| Cost per metre | ₹1,173.35 |
| Say | ₹1,173.35 |