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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

300 mm diameter S.W. pipe

CPWD DAR 2023›Drainage
Item number
19.3.5
Analysis basis
Details of cost for 10 metre length pipe
Priced inputs
1
Derived rate
₹1,173.35 / metre

Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 19.3.5 — 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 : 300 mm diameter S.W. pipe — is derived from 1 priced inputs for 10 metre and works out to ₹1,173.35 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 = 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
  • Say 0.180 sqm
CodeInputUnitQuantityRate (INR)Amount (INR)
Rate as per item no 4.1.10 of SH : Concrete WorkRate as per item 4.1.10Sub-analysiscum1.86,518.6011,733.48
Cost of 10 metre
11,733.48
Cost per metre
1,173.35
Say
1,173.35

From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 1698. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.

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