Measures to be taken to leakage seepage in side cross tunnels

DSR-2023 items--- (A)

Disposal of moorum/building rubbish/ malba/ similar unserviceable, dismantled or waste material by mechanical transport including loading, transporting, unloading to approved municipal dumping ground for lead upto 10 km for all lifts, complete as per directions of Engineer-in-charge. Note - item to be applicable in urban areas having directions for restricted hours for movement/ plying of load carrying motor vehicle of 3.5 cum or more.

Supplying and filling in plinth with sand under floors, including watering, ramming, consolidating and dressing complete.

Providing and laying in position ready mixed or site batched design mix cement concrete for plain cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana/ Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering and finishing as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the minimum specified cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. (a) Concrete of M20 grade with minimum cement content of 270 kg /cum

Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. (a) Thermo-Mechanically Treated bars of grade Fe-500D or more.

Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge, for the following grades of concrete.: Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 110% of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. (a) Concrete of M40 grade with minimum cement content of 390 kg/cum

Demolishing cement concrete manually/ by mechanical means including disposal of material within 50 metres lead as per direction of Engineer - in - charge. Nominal concrete 1:4:8 or leaner mix (including equivalent design mix)

Drilling suitable holes in reinforced or plain cement concrete with power driven drill machine to a minimum depth of 100 mm upto 200 mm in RCC beams, lintels, columns and slabs to introduce steel bars for sunshades/ balconies including fixing the steel bars in position using epoxy resin anchor grout of approved make but excluding the cost of reinforcement, all complete as per direction of Engineer-In-Charge. Upto and including 12 mm dia

Total

Correction factor on DSR 2023 items No 1 to 7 @0.973 (OM vide E-file No. 9158977) Total of DSR 2023 Items (A)

Market rate--- (B)

Providing, supplying & applying pressure grouting of PU MC injekt 2133 (Item Code- MUFG0114) or equivalent with the help of Piston type suitable grouting pump for MC Injekt 2133 PU on horizontal as well as vertical surface as per the technical specification or instruction manufacturer and direction of Engineer- in - charge. (Rates all-inclusive of supply of material, required machinery / T&P, Scaffolding and Manpower)

Providing, supplying & applying pressure grouting of PU MC injekt 2300 (Item Code- MUFG0152) or equivalent with the help of Piston type suitable grouting pump for MC Injekt 2300 PU as per the technical specification or instruction manufacturer and direction of Engineer- in - charge. (Rates all-inclusive of supply of material, required machinery / T&P, Scaffolding and Manpower)

Providing and placing of mechanical packers (dia. 16 mm to 20 mm) or Gl nipple along with ball valve and under water epoxy putty wherever necessary.

Providing and drilling 16 mm to 20 mm dia holes on a hights upto 7.00 mtrs in RCC Raft /wall of any thickness of panel & up to 1200 mm depth as per site requirement.

Sealing drill holes after grouting with Polymer modified mortar.

Total of Market rate items (B)

Gross Total DSR 2023 Items & Market rate items (A)+(B)