Construction Of 40 M 4 Legged Nblw Tower Foundations And Erection Civil Work , Earth Work In Excavation By Mechanical Means ( Hydraulic Excavator ) / Manual Means Over Areas ( Exceeding 30Cm In Depth . 1 . 5M In Width As Well As 10 Sqm On Plan ) Including Disposal Of Excavated Earth , Lead Up To 50M And Lift Up To 1 . 5M , Disposed Earth To Be Levelled And Neatly Dressed . ( A ) All Kinds Of Soil , Filling Available Excavated Earth ( Excluding Rock ) In Trenches , Plinth , Sides Of Foundations Etc . In Layers Not Exceeding 20Cm In Depth , Consolidating Each Deposited Layer By Ramming And Watering , Lead Up To 50 M And Lift Up To 1 . 5 M . , Extra For Every Additional Lift Of 1 . 5 M Or Part Thereof In . All Kinds Of Soil . , Providing And Laying In Position Cement Concrete Of Specified Grade Excluding The Cost Of Centring And Shuttering For All Work Upto Plinth Level: ( A ) 1:4:8 ( 1 Cement : 4 Coarse Sand ( Zone-Iii ) : 8 Graded Stone Aggregate 40 Mm Nominal Size ) . , Providing And Laying In Position Specified Grade Of Reinforced Cement Concrete Excluding The Cost Of Centring , Shuttering Finishing And Reinforcement - All Work Upto Plinth Level: ( A ) 1:1 . 5:3 ( 1 Cement : 1 . 5 Coarse Sand ( Zone-Iii ) : 3 Graded Stone Aggregate 20 Mm Nominal Size ) . , Reinforcement For Reinforced Cement Concrete Works Including Straightening , Cutting , Bending , Binding Placing In Position All Complete , ( A ) Thermo-Mechanically Treated Bars Of Grade Fe-500 D Or More . , Half Brick Masonry With Common Burnt Clay F . P . S . ( Non Modular ) Bricks Of Class Designation 7 . 5 In Foundations And Plinth In . ( A ) Cement Mortar 1:4 ( 1 Cement : 4 Coarse Sand ) , Structural Steel Work Reiveted , Bolted Of Welded In Built-Up Sections , Trusses And Framed Work Including Cutting , Hoisting Fixing In Position And Applying A Priming Coat Of Approved Steel Primer All Complete . , 12 Mm Cement Plaster Of Mix : ( A ) 1:4 ( 1 Cement: 4 Fine Sand ) , Finishing Walls With Water Proofing Cement Paint Of Required Shade: ( A ) New Work ( Two Or More Coats Applied @3 . 84 Kg/10 Sqn ) , Painting With Synthetic Enamel Paint Of Approved Brand And Manufacture To Give An Even Shade ( A ) Two Or More Coats On New Work , Fixing Bed Plates Templates And All Anchor Bolts Etc . For Stems Of Tower Foundation Including Extremely Accurate Positioning , Levelling Etc . Complete As Per The Direction Of Engineer In Charge ( Bed Plates , Templates &Anchor Bolts Etc . To Be Supplied By Department Free Of Cost ) ( The Rate Includes The Cost Of Fixing All Bed Plates , Templates And Anchor Bolts For Four Legged Tower . This Item Also Include Transportation Of Bolts , Angles Etc . , Transportation /Carriage Of Tower Materials Of 40 Metre ( 4 Legged ) Light Weight Narrow Based Approx 10 . 00 Mt In Weight By Mechanical Transport From Bsnl Store At Patna To Site At Bairgania , Sitamarhi Distt . Including Sorting Of Tower Members Size And Number Wise At Store , Loading , Unloading And Stacking Properly In Countable Position At Site I/C All Operation Complete As Per Direction Of Engineer -In -Charge . , Hoisting , Fixing And Erection Of 40 Mtr High Nblw Tower As Per Approved Drawing And Design With The All Its Necessary Components Which Include Antenna Fixtures , Carrier And Fastening , Gantry Cable Feeter Rackm ( A ) 40 Metre High Nblw Tower , Grouting The Base Plates , Legs , Anchor Bolts And Nuts Of Tower By Enclosing The All Four Legs By Half Brick Work In C . M . 1:4 ( 1 Cement: 4 Fine Sand ) On The Cloumn Upto 300 Mm Height , Applying Grase To The Nuts Bolts To Be Embeded , Covering The Nuts Bolts By Polythene Sheet Filling The Enclosure Of Brick Work By Sand Laying Cement Concrete 1:2:4 ( 1Cement ; 2 Coarse Sand : 4 Graded Stone Aggregate 20 Mm Nominal Size ) On The Leg To Proper Slope And Plastering With 12 Mm Cement Plaster Alround With C . M . 1:6 All Complete As Per The Direction Of Engineer-In-Charge Etc Complete . , Providing And Applying Two Or More Coats With Luxol High Gloss Synthetic Enamel Paint Or Equivalent To Membrs Of 40Metre Narrow Based Tower Of Approx Weight 10 . 00 Mt Every Alternate Leg In International White And Orange As Per Norms Of Civil Aviation Signal I/C Applying One Or More Coat Of Zinc Chromate Yellow Primer ( Bison Hb Zinc Phosphate Or Equivalent ) Over And Above One Coat Of Etch Primer ( Bison Wash Primer Or Equivalent ) And Necessary Scaffolding Etc Taking All Necessary Precautions To Protect The Human Lives And Insurance Coverage To Labourers Etc All Complete As Per Direction Of Engineer In Charge ( Note: Rate Includes Painting Of Tower , Platform , Antenna Mount , Ladder , Vertical Tray Etc And Copy Of Insurance Policy Shall Be Produced Before Execution Of This Item ) , Earthing With Copper Earth Plate 600 Mm X 600 Mm X 3 Mm Thick And Placed Vertically In Pit Of Size 900 Mm X 900 Mm X 3000 Mm . The Bolts Nuts , Washers Shall Be Of Copper . The Pit Shall Be Filled With Charcoal And Salt Up To A Depth Of 900 Mm & Remaining Portion With Loose Soil Without Stones . The Masonry Chamber At Ground Level Having Internal Dimension Of Size 300 X300x 300 Mm With 115 Mm Thick Brick Work With Class Designation 50 In Cement Mortar 1Cement: 4 Coarse Sand Made On 700 Mm X700 Mm X150 Mm Base Concrete 1:4:8 ( 1 Cement: 4Coarse Sand: 8 Stone Aggregate ) With 40 Mm Nominal Size ) With A Hole In Middle To Pass The Gi Pipe 20 Mm Dia With A Provision For Funnel And Provided With Ci Frame And Cover ( Wt Of Cover Not Less Than 4 . 5 Kg/Sqm ) With Locking Arrangements . The Funnel Shall Be Fixed With Wire Mesh . The Manhole Cover Shall Be Painted And Marked With The Resistance Of Earth The Plate Earth Is Placed In One Corner Of Tower Leg And Shall Be Inter Connected With Ring Earth By A Copper Strip Of 25 X 3 Mm Size Required Length Complete As Per Drawing And Requirement And As Directed By Engineer-In-Charge . , Providing And Laying Ring Earthing With G . I . Strips 50 X 3 Mm To Be Buried In Trench Of Curved 1000 X 300 Mm Width Around The Tower 2 Metres Away From Legs . The G . I . Strip Should Be Bending At All Corners All Connections Are To Be Made With G . I . Nuts And Bolts , Each Leg Of Tower Shall Be Separately Connected With G . I . Strip Of 50 X 3 Mm From Top Of The Tower Stem To Ground Level I/C Supplying And Fixing And Tied Up With Legs With Same Strip At An Interval Of 4 . 00 Metres Both Ends Of G . I . Flats Shall Be Brought To Ground Level And Terminated In Brick Masonry Chamber 300 X 300 X 300 Mm Size With 50 Class Bricks In 1 Cement :6 Coarse Sand On Base Conc Rete 1 Cement: 5 Sand: 10 Graded Stone Aggregate 40 Mm In 1 Cement:: 3Fine Sand With Hinged C . I . Cover And Frame ( Weight Of Cover 4 . 5 Kg/Sq Mtr . ) With Proper Locking Arrangement . Lightening Arrester Should Be Connected To Ring Earthing With The G . I . Strip . The Trench To Be Refilled With Good Earth After Providing Sand , Dust Charcoal And Salt At Different Layers Include Ing Magger Test Etc . Complete As Per Direction Of Engineer-In-Charge . , Supplying And Fixing Aviation Obstruction Lamp Having Minimum 300 Led Bulbs Of Make Bajaj/ Saraj/Binoy/Avidas/ Litten Or Equivalent With Light Dependent Resistance Sencer ( Day And Night Automatic Timer ) With Necessary Mcb Switches Armoured Cables Clamps , Cable Etc . Complete . , P/F Homogeneous Antistatic Sheet And Skirting Of Approved Company Like Krishna Vinyl , Wonder Floor Etc . In Approved Pattern On A Smooth And Damp Proof Base Using Rubber Equivalent Adhesive Of Approved ( A ) 2 . 00Mm Thick Sheet , Providing & Fixing Copper Strips 20X . 030 Mm Thick Below Antistatic Flooring As Per Direction Of E/I .
