Roof treatment at Jasodanga 33 11 KV Substation under Alipurduar Division

Labour rate for any other miscalleneous work. (Just Like Waterproffing for SIKA 109 etc.)

Dismantling artificial stone flooring upto 50 mm. thick by carefully chiselling without damaging the base and removing rubbish as directed within a lead of 75 m. a) In ground floor including roof .

Screed concrete on roof with cement concrete (1:2:4 ) including admixture of damp proof materials as per manufactures specification laid in panels as directed including cleaning, chipping and applying cement slurry @ 1.75 kg/SQM. Providing ghoondies at junctions with parapet etc. Shapping and finishing at mouths of rain water pipes complete with top finishing with cement punning not more than 1.5 mm thick, curring complete as per direction of E.I.C. (Same as Artificial stone).[Artificial Stone Flooring (Sl. no. 4 at Page no. 22 3rd CORRI.) minus Neat Cement Punning (Sl. 8 at Page no. 166)= Rs. 330.00 - Rs. 34.00 = 296.00]. Average 35 mm thick.

Providing waterproofing treatment over concrete roof surface (old or new) by the application of two coats of slurry prepared with latex of approved brand, with brushs and the two layers of Water Proofinng of approved Brand which is SIKA 109 (Approx Consumption : SikaTop®Seal 109 hi: 1st coat = 1.00 kg/m2, 2nd coat = 1.50 kg/m2.) Note: The consumption will vary depending on application area, substrate type, substrate roughness, surface profile, absorption of the surface and thickness required. Ambient air temperature +10 C min. / +40 C max. Mixing ratio Part A : Part B = 1 : 1.5 (by weight) Substrate temperature +10 C min. / +40 C max. Pot life ~40 minutes (100 g mass, +27 C)

Supplying & laying 3mm thick pre-fabricated plastomeric water proofing membrane conforming to EN 12311-1 & ASTMD 5147, manufactured with atactic poly propylene (APP) modified premium grade asphalt , specially reinforced with non-woven polyester core with polyester reinforcement @160 gms per SQM & both faces covered with thermo-fusible polyethylene film /MineraL on top face over a coat of primer @ 0.40 lit/SQM of manufacturer's specification on smooth,clean dry surface prepared wherever required.Lap joint shall be provided of 75 mm in longitudinal & 100 mm in transverse direction and fused using LPG/ Propane torch employing extra care ensuring full bondage,complete removal of entrapped air and sealing edges into grooves in appropriate manner as per direction of 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)

Providing one coat of anti-corrosive and water proofing paint supersilver shield (STP Ltd.) @0.125 ltr/ sqm composed of oxidised bitumen and aluminium powder in volatile solvent over APP membrane afer making and removing dust to the satisfaction of the E.I.C.

Repairing crack in wall by cement grouting (1 : 2) including widening the crack on the surface (into V section) cleaning and packing the same with cement mortar (1 : 2) and finishing off to match with adjacent surface. (Cement-69 Kg/100 m)

Sealing of crack / porous concrete with Epoxy Grout by injection through nipples complete.

Sealing new expansion joint with Elastomeric Polysulphide Sealant of gap size 50mmX25 mm Including cleaning of the expansion joint thoroughly, mending of edges & surface, placing 50mm dia Backerrod as backup material with the cost of materials, labours,& all other incidental charges as per manufacturer's specification & direction of Engineer-in charge.

Supplying, fitting & fixing UPVC pipes A- Type and fittings conforming to IS:13592-1992 with all necessary clamps nails, including making holes in walls, floor etc. cutting trenches in any soil through masonry concrete structures etc if necessary and mending good damages including joining with jointing materails (Spun Yarn, Valamoid/Bitumen/M-Seal etc) complete. A) UPVC Pipes: (iii) 160 mm. Dia.

B) UPVC Fittings: a) (iii) Plain Tee, 160 mm dia

b) (iii) Plain Y, 160 mm dia

c) (iii) Bend 87.5 degree, 160 mm dia

d) (iii) Shoe, 160 mm dia

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