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CPWD Analysis of Rates · Roofing

Providing and fixing of 40 cm overall width plain G.S. sheet fixed with polymer coated J or L hooks, bolts and nuts, G.l. limpet and bitumen washer complete, bent to shape and fixed in wall with cement mortar 1:3 (1 cement : 3 coarse sand)

1.00 mm thick with zinc coating not less than 275 gm/m²

Item number
12.6.1
Analysis basis
Details of cost for 13.39 m
Priced inputs
10
Derived rate
857.55 / metre

Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 12.6.1 Providing and fixing of 40 cm overall width plain G.S. sheet fixed with polymer coated J or L hooks, bolts and nuts, G.l. limpet and bitumen washer complete, bent to shape and fixed in wall with cement mortar 1:3 (1 cement : 3 coarse sand) 1.00 mm thick with zinc coating not less than 275 gm/m² — is derived from 10 priced inputs for 13.39 m and works out to ₹857.55 per metre after water charges, GST, CPOH and cess. The full build-up is below.

  • Consider a length of flashing 13.39 metre.
  • G.I. plain sheet 1.00 mm thick 2.44mx1.22
  • m
  • 2 nos. @ 23.27 Kg. = 46.54 Kg.+
  • Total = 47.47 Kg. or 0.475 quintal
  • (taking 2 bolts per joints)
  • Add 2% wastage = 0.0.93 Kg
CodeInputUnitQuantityRate (INR)Amount (INR)
0992Galvanised steel plain sheetsMaterialquintal0.4756,800.003,230.00
0222Seam bolts and nuts 6 mm dia and 25 mm longMaterial10 Nos111.0011.00
1207G.I. Limpet washerMaterial100 Nos0.121.002.10
1208Bitumen washerMaterial100 Nos0.130.003.00
9977Carriage of G.I. seam bolts and washersMaterialL.S.0.392.270.89
9999SundriesMaterialL.S.10.792.2724.49
0130MistryLabourday0.5897.00448.50
0102Blacksmith 1st classLabourday1.48897.001,327.56
0103Blacksmith 2nd classLabourday1816.00816.00
0114BeldarLabourday3736.002,208.00
TOTAL
8,071.54
Add 1 % Water charges on “W”
80.72
TOTAL
8,152.26
Add GST on “X” (multiplying factor 0.2127)
1,733.99
TOTAL
9,886.25
Add 15% CPOH on “Y”
1,482.94
TOTAL
11,369.19
Add Cess @ 1% on “Z”
113.69
Cost of 13.39 metre
11,482.88
Cost of 1.00 metre
857.57
Say
857.55

From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 860. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.

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