Roof Treatment Of Baruipur Telephone Exchange Building, Kolkata. 1 Demolishing Lime Concrete Manually / By Mechanical Means And Disposal Of Material Within 50 Metres Lead As Per Direction Of Engineer In-Charge 2 Dismantling Old Plaster Or Skirting Raking Out Joints And Cleaning The Surface For Plaster Including Disposal Of Rubbish To The Dumping Ground Within 50 Metres Lead. 3 Disposal Of Building Rubbish / Malba / Similar Unserviceable, Dismantled Or Waste Materials By Mechanical Means, Including Loading, Transporting, Unloading To Approved Municipal Dumping Ground Or As Approved By Engineer-In-Charge, Beyond 50 M Initial Lead, For All Leads Including All Lifts Involved. 4 Dismantling 15 To 40 Mm Dia G.I. Pipe Including Stacking Of Dismantled Pipes ( Within 50 Metres Lead ) As Per Direction Of Engineering-Charge. 5 Internal Work- Exposed On Wall 6 Providing Gola 75X75 Mm In Cement Concrete 1:2:4 ( 1 Cement :2 Coarse Sand : 4 Stone Aggregate 10 Mm And Down Gauge ) Including Finishing With Cement Mortar 1:3 ( 1 Cement : 3 Fine Sand ) As Per Standard Design 7 In 75X75 Mm Deep Chase 8 Making Khurras 45X45 Cm With Average Minimum Thickness Of 5 Cm Cement Concrete 1:2:4 ( 1 Cement : 2 Coarse Sand : 4 Graded Stone Aggregate Of 20 Mm Nominal Size ) Over P.V.C. Sheet 1Mx1mx400 Micron, Finished With 12Mm Cement Plaster 1:3 ( 1 Cement :3 Coarse Sand ) And A Coat Of Neat Cement, Rounding The Edges And Making And Finishing The Outlet Complete. 9 15 Mm Cement Plaster On The Rough Side Of Single Or Half Brick Wall Etc Of Mix : 10 1:6 ( 1 Cement: 6 Fine Sand ) 11 Applying Priming Coat : 12 With Ready Mixed Red Oxide Zinc Chromate Primer Of Approved Brand And Manufacture On Steel Galvanised Iron / Steel Works 13 Painting With Synthetic Enamel Paint Of Approved Brand And Manufacture To Give An Even Shade : 14 Two Or More Coats On New Work. 15 Chipping Of Unsound / Weak Concrete Material From Slabs, Beams, Columns Etc. With Manual Chisel And / Or By Standard Power Driven Percussion Type Or Of Approved Make Including Tapering Of All Edges, Making Square Shoulders Of Cavities Including Cleaning The Exposed Concrete Surface And Reinforcement With Wire Brushes Etc. And Disposal Of Debris For All Lead And Lifts All Complete As Per Direction Of Engineer-In-Charge 16 25 Mm Average Thickness 17 50 Mm Average Thickness 18 Cleaning Of Reinforcement From Rust From The Reinforcing Bars To Give It A Total Rust Free Steel Surface By Using Alkaline Chemical Rust Remover Of Approved Make With Paint Brush And Removing Loose Particles After 24 Hours Of Its Application With Wire Brush And Thoroughly Washing With Water And Allowing It To Dry, All Complete As Per Direction Of Engineer-In-Charge. 19 Bars Upto 12 Mm Diameter 20 Providing, Mixing And Applying Bonding Coat Of Approved Adhesive On Chipped Portion Of Rcc As Per Specifications And Direction Of Engineer-In-Charge Complete In All Respect. 21 Sbr Polymer ( @10% Of Cement Weight ) Modified Cementitious Bond Coat @ 2.2 Kg Cement Per Sqm Of Surface Area Mixed With Specified Proportion Of Approved Polymer 22 Providing, Mixing And Applying Sbr Polymer ( Of Approved Make ) Modified Cement Mortar In Proportion Of 1:4 ( 1 Cement: 4 Graded Coarse Sand With Polymer Minimum 2% By Wt. Of Cement Used ) As Per Specifications And Directions Of Engineer-In-Charge. 23 25 Mm Average Thickness In 2 Layers. 24 50 Mm Average Thickness In 3 Layers. 25 Repairs To Plaster Of Thickness 12 Mm To 20 Mm In Patches Of Area 2.5 Sq. Meters And Under, Including Cutting The Patch In Proper Shape, Raking Out Joints And Preparing And Plastering The Surface Of The Walls Complete, Including Disposal Of Rubbish To The Dumping Ground , All Complete As Per Directions Of Engineer-In-Charge. 26 With Cement Mortar 1:4 ( 1 Cement : 4 Fine Sand ) . 27 Grading Roof For Water Proofing Treatment With 28 Cement Concrete 1:2:4 ( 1 Cement : 2 Coarse Sand : 4 Graded Stone Aggregate 20Mm Nominal Size ) 29 Providingupvc High Pressure Pipes Conforming To Astm-D-1785, Schedule:40 Of Approved Brand And Manufacturer With Upvc Threaded / Non Threaded Fittings, Clips And Pvc Or G.I. ) I / C Fixing The Pipe With Clamps At 1.00 M Spacingwith All Necessary Accessories, Specials Viz.Socket, Bend, Tee, Union, Cross, Elbow, Nipple, Long Screw, Reducing Socket, Reducing Tee, Short Piece Etc. ( Mtaif Required Should Be Paid Extra ) Fitted With Holder Bats Clamps, Including Cutting Pipes, Making Threads, Fitting, Fixing Etc. Complete In All Respect Including Cost Of All Necessary Fittings As Required And Jointing Materials With One Step Upvc Solvent Cementcomplete As Per Direction Of Engineer In Charge. : Internal Work - Exposed On Wall 30 32 Mm Nominal Bore Pipe. 31 Removing Existing Damaged Top Layer / Loose Plastered Surface By Scrapping, Removing All The Dust And Minor Repairing The Cracks, Pot Holes Etc With Cement Morter 1:3 All Complete As Per Direction Of Engineer In Charge. 32 Fixing One Layer Geotextile Cloth With Polymer Modified Cement Slurry Using Cement @ 1.80 Kg / Sqm And Sbr Polymer ( Latex Of Sika Or Equivalent ) @ 0.90 Litre / 10 Sq M ) 33 Grading Roof For Water Proofing Treatment With Cement Concrete 1:1.5:3 ( 1 Cement : 2 Coarse Sand : 4 Graded Stone Aggregate 20Mm Nominal Size ) , Admixingwith Super Plasticizerby Weight Of Cement As Per Manufacturers Specification. Concreting To Be Done In Panels Up To 2.00 Square Metre Size Using Laminated Ply Partitions For Panels Complete And Making Smooth The Top With Trowel And Curing The Surface At Least 7 Days As Per Direction Of The Engineer-In-Charge. 34 40 Mm Thick With 20 Mm Nominal Size Stone Aggregate 35 Sealing / Filling Of Expansion Joint Gaps Of Size 10Mm X 10Mm With Poly Sulphide Sealant After Cleaning The Gap Thoroughly After Removing The Thermocol Partition And Filling The Gap Up To 10Mm Below From Top Surface. Rest To Filled With Cement Mortar 1:4. Two Coats Of Primer To Be Applied Prior To The Said Operation In The Expansion Gap. The Entire Operation Is Carried Out As Per Manufacturers Specification And As Directed By The E-In-C. 36 Extra For Using Polymer Modified Cement Concrete 1:2:2 ( I Cement: 2 Coarse Sand:2 Stone Aggregate 10Mm Nominal Size ) Instead Of Polymer Modified Mortar 1:4 ( Volume Of Finished Concrete Shall Be Measured ) 37 Removing Grown Up Medium Sizebanyan Plant Of Single Stem Above 50Mm Dia ( Age Not Less Than Three Years ) From Different Part Of The Building ( Accessible Or Non Accessible Area ) Including Applying Concentrated Hydrochloric Acid / Round-Up Or Equyivalent At Least Two Times With A Gap Of At Least 30 Days Including Minor Repairing With Cement And Sand. 38 Removing Small Plant From Different Part Of The Entire Boundary Wallincluding Applying Concentrated Hydrochloric Acid At Least Two Times With A Gap Of At Least 30 Days 39 Removingroots Of Plant Above 10Mm Dia Inserted In The The Wall By Cutting V Groove And Repairing The Same With Cement Morter 1:3 ( One Cement : 3 Fine Sand ) 40 Providing And Fixing 1.50 Mm Wide Bamboo Scaffolding Upto The Height Of 16 M Including Removal Of The Same. 41 Labour Charge For Fixing 1.5 M Wide Bamboo Scaffolding Up To 16 M Height And Removal The Same Without The Cost Of Materials. 42 Cement Wash Using Slag Cement @ 2.20 Kg / 10 Sq M Complete As Per Direction Of Engineer In Charge, 43 Credit Value For Dismantled Unserviceable / Serviceable Departmental Materials: 44 G.I. Pipe . 32 Mm Dia.
