CPWD Analysis of Rates · Drainage
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
250 mm diameter S.W. pipe
- Item number
- 19.3.4
- Analysis basis
- Details of cost for 10 metre length pipe
- Priced inputs
- 1
- Derived rate
- ₹1,016.90 / metre
Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 19.3.4 — 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 : 250 mm diameter S.W. pipe — is derived from 1 priced inputs for 10 metre and works out to ₹1,016.90 per metre after water charges, GST, CPOH and cess. The full build-up is below.
- 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
- Say 155968 sqmm or 0.156 sqm
| Code | Input | Unit | Quantity | Rate (INR) | Amount (INR) |
|---|---|---|---|---|---|
| Rate as per item no 4.1.10 of SH : Concrete WorkRate as per item 4.1.10Sub-analysis | cum | 1.56 | 6,518.60 | 10,169.02 |
- Cost of 10 metre
- 10,169.02
- Cost per metre
- 1,016.90
- Say
- 1,016.90
From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 1697. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.
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