WBPWD/EE/BNWD/NIT31e/2025-26/1

Taking out olddamaged tarfelt from the roof, parapet etc. preparing thero of surfaces by removing all spoils, blisters,moss etc. from the working site and disposal of the same beyond the compound and cleaning the site in all respect as per direction of Engineer-in-Charge.

Galvanised corrugated iron sheet work (excluding the supporting frame work) fitted and fixed with 10 mm. dia Jor L hook-bolts, limpet and bitumen washers and putty complete with150 mm. end lap and one corrugation minimum sidelap. (Payment to be made on area of finished work) (GCI sheet to be supplied by contractor) In Roof: With 0.63 mm thick sheet

Ordinary Cement concrete (mix 1:2:4) with graded stone chips (6mm nominalsize) excluding shuttering and reinforcement, if any, in 4th floor as per relevant IS codes.Pakur variety

Plaster (to wall, floor, ceiling etc.) with sand and cement mortar including rounding off or chamfering corners as directed and raking out joints including throating, nosing and drip course, scaffolding/staging where necessary (Ground floor).[Excluding cost of chipping over concrete surface] With 1:6 cement mortar 15 mm thick plaster

Supplying & laying 3mm thick pre-fabricated plastomeric water proofing membrane conforming to EN 12311-1 & ASTMD5147, manufactured with atactic poly propylene (APP) modified premium grade asphalt ,specially reinforced with non-wovenpolyester core with polyester reinforcement @160gms persqm & both faces covered with thermo-fusible polyethylene film/MineraLon top face over a coat of primer @ 0.40 lit/sqm of manufacturer's specification on smooth, clean dry surface prepared wherever required. Lap joints hallbe provided of 75mm in longitudinal & 100mm in transverse direction and fused usingLPG/ Propane torch employing extra care ensuring full bondage, complete removal of entrap pedair and sealing edges intogrooves in appropriate manner asper directionof Engineer-in-charge all complete including materials,labour and applicable taxes. (Payment shall be made on the basis of finished surface area.). Membrane Property: Softening Point > 150 deg C, Cold Flexibility < -6 deg C, Tensile Strength, N/cm : 600 (longitudinal), 450 (transverse), Tearing Strength, N: 300 (longitudinal), 200 (transverse)

Making one set of scaffolding only for replacing glass panels, painting, up rooting plant and an other repairing works of building and S&P works for external works only with 10cm. dia bamboo as main posts at therate of 1 metre centre to centre and 7.5cm. dia bamboo ties @0.75 metre apart fitting and fixing with necessary coir,nails etc.as per direction of theEngineer-in charge.

TOTAL:

ADD : GST - 18% (SGST = 9% & CGST = 9%)

ADD : WEST BENGAL LABOUR WELFARE CESS = 1%

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