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CPWD Analysis of Rates · Water Proofing

Providing and applying crystalline mortar by mixing in the ratio of 4.5 : 1 (4.5 parts crystalline mortar : 1 part water) for the treatment of faulty construction joints, cracks, tie rod holes and spalled & honeycombed surface of RCC underground structures like basement, water tanks, bridge deck etc. to ensure water tightness. The crystallie mortar shall conform to the EN 1504-3 having compressive strength Class R4 ≥45 MPa and adhesive bond strength Class R3 ≥1.5 MPa. The work shall be carried out all complete as per specification and the direction of the EngineerIn-Charge. The product performance shall carry guarantee for 10 years against any leakage

For sealing cracks and faulty construction joints, routed out/making U-shape groove size 25x25mm and then primed the area with integral crystalline slurry @0.05kg/running metre and while the surface is tacky filled the groove upto surface with crystalline mortar @1.50kg/ running metre. Once crystalline mortar is touch dry then finally applied two coats of integral crystalline slurry @0.05kg/running metre per coat

Item number
22.25.1
Analysis basis
Details of cost for 1.00 meter
Priced inputs
5
Derived rate
547.70 / meter

Under the CPWD Delhi Analysis of Rates 2023 (Civil), item 22.25.1 Providing and applying crystalline mortar by mixing in the ratio of 4.5 : 1 (4.5 parts crystalline mortar : 1 part water) for the treatment of faulty construction joints, cracks, tie rod holes and spalled & honeycombed surface of RCC underground structures like basement, water tanks, bridge deck etc. to ensure water tightness. The crystallie mortar shall conform to the EN 1504-3 having compressive strength Class R4 ≥45 MPa and adhesive bond strength Class R3 ≥1.5 MPa. The work shall be carried out all complete as per specification and the direction of the EngineerIn-Charge. The product performance shall carry guarantee for 10 years against any leakage For sealing cracks and faulty construction joints, routed out/making U-shape groove size 25x25mm and then primed the area with integral crystalline slurry @0.05kg/running metre and while the surface is tacky filled the groove upto surface with crystalline mortar @1.50kg/ running metre. Once crystalline mortar is touch dry then finally applied two coats of integral crystalline slurry @0.05kg/running metre per coat — is derived from 5 priced inputs for 1.00 meter and works out to ₹547.70 per meter after water charges, GST, CPOH and cess. The full build-up is below.

  • MATERIAL :
  • (3 x 0.05kg / meter) = 0.15kg
CodeInputUnitQuantityRate (INR)Amount (INR)
0353Crystalline Mortar @1.50 kg per meterCrystalline mortarMaterialkilogram1.5209.00313.50
0351Integral crystalline slurry for priming and finishingIntegral crystalline slurryMaterialkilogram0.15214.0032.10
9999For making crystalline mortar and repair work etc..MaterialL.S.14.452.2732.80
9999SundriesMaterialL.S.1.152.272.61
9999Carriage of material and tools cost etc..MaterialL.S.1.752.273.97
TOTAL
384.98
Add 1 % Water charges on “W”
3.85
TOTAL
388.83
Add GST on “X” (multiplying factor 0.2127)
82.70
TOTAL
471.53
Add 15% CPOH on “Y”
70.73
TOTAL
542.26
Add Cess @ 1% on “Z”
5.42
Cost for 1.00 meter
547.68
Say
547.70

From the CPWD Delhi Analysis of Rates 2023 (Civil), Volumes I & II, printed page 1862. Reference only — CPWD amends rates through correction slips between editions, so verify against the official source before pricing a bid.

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