Rehabilitation of brides No 863/1 (Gadadhar bridge), 885/1 (Tipkai Bridge), 899/1 (Gauranga Bridge), under plan for the year 2021-22 under Abhyapuri construction Division, in the state of Assan. (Job No 17/AS/2021-22/227)

Amount

Patching in depression of concrete surface wherever necessary by laying epoxy putty , Nitocote VF of Fosroc Chemicals or equivalent @ 1 Lit per sqm after proper surface preparation and proper scraping of concrete protrusion as specified and directed by the department complete including formwork .

Applying Nitowrap 410 saturant Fosroc Chemicals or MasterBrace 4500 saturant of BASF or equivalent with wet film thickness @ 250 microns (0.27Lit per sqm) over a coat of saturant epoxy primer Nitowrap 30 of Fosroc Chemicals or MasterBrace 3500 of BASF orequivalent @ 0.11Lit per sqm with brush followed by fixing carbon fibre composite system Nitowrap EP (CF) of Fosroc Chemicals or MAsterBrace Fibres (CF) of BASF or equivalent by pressing on the saturant and impregnate the same by applying a final coat of Nitowrap 410 saturant Fosroc Chemicals or MasterBrace 4500 saturant of BASF or equivalent as specified and directed by the department complete including formwork.

Applying two coats of UV resistant coating Nitowrap 512 of Fosroc Chemicals or MasterProtect of BASF or equivalent over fibre system having wet film thickness of 100 micron @ 0.11Lit per sqm as specified and directed by the department complete including formwork.

Hanging Platform for working of carbon fiber reinforcement (Considered 1no)

Replacement of Expansion Joints complete as per drawings

Strip Seal Expansion Joint (Providing and laying of a strip seal expansion joint catering to maximum horizontal movement upto 70 mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/supplier or their authorised representative ensuring compliance to the manufacturer's instruction for installation).

Removal of existing cement concrete wearing coat including its disposal complete as per Technical specification without causing any detrimental effect to any part of the bridge structure and removal of dismantled material with all lifts and lead upto 1000.(Thickness 75mm.)

Providing and laying Bituminous wearing course comprising of tack coat with bitumen emulsion CSS-1h as per APWD SOR item no 5.2 & MOSRT&H Specification Nos 503, 6mm thick mastic asphalt as per APWD SOR item no 14.5 & MOSRT&H Specification Nos 515 & 2702 and 2 layers of 25mm thick Asphalt concrete including of close Graded Premix Surfacing(CGPS) materials with Type -a aggregate as per APWD SOR item no 5.11 & MOSRT&H Specification Nos 512 including all lead and lift as directed.

Painting on concrete surface (Providing and applying 2 coats of water based cement paint to unplastered concrete surface after cleaning the surface of dirt, dust, oil, grease, efflorescence and applying paint @ of 1 litre for 2 Sq.m. ) (B) For RCC Railing

Construction of single lane timber ramp (as per drawing and technical specification) for movement of traffic during rehabilitation work of bridge consisting of track way,decking, bearing beam ,railing and rail post made with timber and R.S.Joist beam over lifting superstructure end and necessary temporary barricade and appropriate traffic signaling for both day and night and dismantling after completion of rehabilitation works

Bridge no: 885/1 over river Tipkai bridge at chainage 884.000Km on NH-31 (New-17) Patching in depression of concrete surface wherever necessary by laying epoxy putty , Nitocote VF of Fosroc Chemicals or equivalent @ 1 Lit per sqm after proper surface preparation and proper scraping of concrete protrusion as specified and directed by the department complete including formwork .

Applying Nitowrap 410 saturant Fosroc Chemicals or MasterBrace 4500 saturant of BASF or equivalent with wet film thickness @ 250 microns (0.27Lit per sqm) over a coat of saturant epoxy primer Nitowrap 30 of Fosroc Chemicals or MasterBrace 3500 of BASF orequivalent @ 0.11Lit per sqm with brush followed by fixing carbon fibre composite system Nitowrap EP (CF) of Fosroc Chemicals or MAsterBrace Fibres (CF) of BASF or equivalent by pressing on the saturant and impregnate the same by applying a final coat of Nitowrap 410 saturant Fosroc Chemicals or MasterBrace 4500 saturant of BASF or equivalent as specified and directed by the department complete including formwork.

Applying two coats of UV resistant coating Nitowrap 512 of Fosroc Chemicals or equivalent over fibre system having wet film thickness of 100 micron @ 0.11Lit per sqm as specified and directed by the department complete including formwork.

Hanging Platform for working of carbon fiber reinforcement (Considered 2 nos)

Supplying, fitting and fixing in position true to line and level cast steel rocker bearing conforming to IRC: 83(Pt.-1) section IX and clause 2003 of MoRTH specifications complete including all accessories as per drawing and Technical Specifications.

Supplying, fitting and fixing in position true to line and level forged steel roller bearing conforming to IRC: 83(Pt.-1) section IX and clause 2003 of MoRTH specifications complete including all accessories as per drawing and Technical Specifications.

Labour for lifting of superstructure span by jacking up from below i.e by placing the jacks on pier/abutment caps for span length of 30m.(cost of bearing to be paid extra)(Rectification of Bearings as per Technical Specifications)(B)Lifting with constructing auxilary structure upto 6m height including dismentling and removal of same.

Labour for replacement of Bearings complete as per Technical Specification (Cost of bearing to be paid extra)

Replacement of Expansion Joints complete as per drawings

Strip Seal Expansion Joint (Providing and laying of a strip seal expansion joint catering to maximum horizontal movement upto 70 mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/supplier or their authorised representative ensuring compliance to the manufacturer's instruction for installation).

Removal of existing cement concrete wearing coat including its disposal complete as per Technical specification without causing any detrimental effect to any part of the bridge structure and removal of dismantled material with all lifts and lead upto 1000.(Thickness 75mm.)

Providing and laying Bituminous wearing course comprising of tack coat with bitumen emulsion CSS-1h as per APWD SOR item no 5.2 & MOSRT&H Specification Nos 503, 6mm thick mastic asphalt as per APWD SOR item no 14.5 & MOSRT&H Specification Nos 515 & 2702 and 2 layers of 25mm thick Asphalt concrete including of close Graded Premix Surfacing(CGPS) materials with Type -a aggregate as per APWD SOR item no 5.11 & MOSRT&H Specification Nos 512 including all lead and lift as directed.

Painting on concrete surface (Providing and applying 2 coats of water based cement paint to unplastered concrete surface after cleaning the surface of dirt, dust, oil, grease, efflorescence and applying paint @ of 1 litre for 2 Sq.m. ) (B) For RCC Railing

Construction of single lane timber ramp (as per drawing and technical spcification) for movement of traffic during rehabilitation work of bridge consisting of track way,decking, bearing beam ,railing and rail post made with timber and R.S.Joist beam over lifting superstructure end and necessary temporary barricade and appropriate traffic signaling for both day and night and dismantling after completion of rehabilitation works

Bridge no: 899/1 over river Gaurang bridgeat chainage 898.308 Km on NH-31 (New-17) Patching in depression of concrete surface wherever necessary by laying epoxy putty , Nitocote VF of Fosroc Chemicals or equivalent @ 1 Lit per sqm after proper surface preparation and proper scraping of concrete protrusion as specified and directed by the department complete including formwork .

Applying Nitowrap 410 saturant Fosroc Chemicals or equivalent with wet film thickness @ 250 microns (0.27Lit per sqm) over a coat of saturant epoxy primer Nitowrap 30 of Fosroc Chemicals or equivalent @ 0.11Lit per sqm with brush followed by fixing carbon fibre composite system Nitowrap EP (CF) of Fosroc Chemicals or equivalent by pressing on the saturant and impregnate the same by applying a final coat of Nitowrap 410 saturant Fosroc Chemicals or equivalent as specified and directed by the department complete including formwork.

Applying two coats of UV resistant coating Nitowrap 512 of Fosroc Chemicals or equivalent over fibre system having wet film thickness of 100 micron @ 0.11Lit per sqm as specified and directed by the department complete including formwork.

Hanging Platform for working of carbon fiber reinforcement (Considered 1no)

Replacement of Expansion Joints complete as per drawings

Strip Seal Expansion Joint (Providing and laying of a strip seal expansion joint catering to maximum horizontal movement upto 70 mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/supplier or their authorised representative ensuring compliance to the manufacturer's instruction for installation).

Removal of existing cement concrete wearing coat including its disposal complete as per Technical specification without causing any detrimental effect to any part of the bridge structure and removal of dismantled material with all lifts and lead upto 1000.(Thickness 75mm.)

Providing and laying Bituminous wearing course comprising of tack coat with bitumen emulsion CSS-1h as per APWD SOR item no 5.2 & MOSRT&H Specification Nos 503, 6mm thick mastic asphalt as per APWD SOR item no 14.5 & MOSRT&H Specification Nos 515 & 2702 and 2 layers of 25mm thick Asphalt concrete including of close Graded Premix Surfacing(CGPS) materials with Type -a aggregate as per APWD SOR item no 5.11 & MOSRT&H Specification Nos 512 including all lead and lift as directed.

Painting on concrete surface (Providing and applying 2 coats of water based cement paint to unplastered concrete surface after cleaning the surface of dirt, dust, oil, grease, efflorescence and applying paint @ of 1 litre for 2 Sq.m. ) (B) For RCC Railing

Greasing of Bearing with ULTRATACK AP3 grease including cleaning of bearings with steel brush,removal of dusts and dirt with necessary scaffolding etc. complete as directed by the department.

Construction of single lane timber ramp (as per drawing and technical spcification) for movement of traffic during rehabilitation work of bridge consisting of track way,decking, bearing beam ,railing and rail post made with timber and R.S.Joist beam over lifting superstructure end and necessary temporary barricade and appropriate traffic signaling for both day and night and dismantling after completion of rehabilitation works.

Md. Matlebuddin Ahmed

Shree Gautam Construction Co. Ltd.