JORHAT/MMPNA/R_R/01 Repair and Rehabilitation of bridge on 1) Dhodar Ali Ali Road (Kamarbandha(Kakodunga) - Amaguri) at Ch-88.395km, 2) Dhodar Ali Road (Kamarbandha(Kakodunga) - Amaguri) at Ch-72.455 km, 3) Dhodar Ali Road (Kamarbandha(Kakodunga) - A

Amount

Dhodar Ali Ali Road (Kamarbandha(Kakodunga) - Amaguri) at Ch-88.395km 'Chipping of deteriorated concrete and removal of all loose & friable materials and fully exposing rusted reinforcement followed by proper cleaning and removing of rusts and other foreign materials using sand blasting/ emery cloths/ wire brush etc. including formwork as directed and specified by the department complete

Replacement of corroded reinforcement by cutting and welding new reinforcement of minimum 25mm dia. including lapping on both sides to the specified length as directed and as per relevant IS/IRC codes and cost of gas ,welding rods,higher charge of welding machines etc. including formwork as required.(Reinforcement to be measured and paid seperately)

Supplying and applying two coats of Zinc rich anti-corrosive protective coating with "Nitozinc primer" of Fosroc or euivalent @ 0.20 Lit per Sqm over thoroughly cleaned and prepared steel bars including formwork as directed and specified by the department complete.

Supplying and applying Epoxy based bonding agent Nitobond EP of Fosroc Chemicals or MasterBrace 1414 of BASF or euivalent @ 0.50 Lit pe sqm after totally saturating the cleaned concrete surface with clean water for proper bonding of old and new concrete including formwork as specified and directed by the department complete.

Patching of damaged concrete surface with structural grade polymer modified reinstatement mortar to like Fosroc Renderoc S2 or equivalent at a thickness of 10 to 20mm as per instructions of manufacturer and as approved by the Engineer.The prepacked repair mortar should have a compressive strength 45 N/mm²,Flexture strength 8 N/mm² at 28 Days.

Repair of joint Grooves with Epoxy Mortar Repair of spalled joint grooves of contraction joints, longitudinal joints and expansion joints in concrete pavements using epoxy mortar or epoxy concrete)

Providing & fixing 16mm dia MS nozzles in a grid of 1m c/c up to the half of the thickness of the concrete structure.A grout slurry of neat cement & chloride free expanding grout Cebex 100 of Fosroc Chemicals or Mastergrout CPG-1 of Choksey Chemicals or MasterFlow 150 of BASF or equivalent @ 0.5% by weight of cement water cement ratio 0.35 to 0.40 and viscosity not more than 1.02 centipoise with grouting pressure till the refusal of injection grout . The grouting operation pressure shall be 2Kg/sq.cm.Cutting the exposed nozzle after the grouting with a good cutter to make the surface free from the grouting pipes and to seal the gap with plugging compound Masterplug of Choksey Chemicals as per the specification and the direction of the department complete including formwork.

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy

Sealing of crack / porous concrete with Epoxy Grout by injection through nipples complete as per clause 2803.1.

Providing and applying Deckguard E 2000 or Masterseal 878 of BASf or equivalent a High Performance Anticarbonation Protective Coating System, over the prime surface using an airless spray or roller at right angles to each other @ coverage of 5 Sqm per litre per coat @ 200 microns wft / 100 microns DFT with an intercoat period of minimum 12 hrs @ 35ºC. The coverage per litre for 2 coats shall be 2.5 Sqm @ 200 microns DFT. The protective coating system should have CO2 diffusion resistance not less than 240mm equivalent of air thickness and 60cm equivalent of 30N concrete along with a water vapour transmission resistance of less than 1.0 metre (Taywood method), the coating should have static crack accommodation of not less than 2mm (BRE) and adhesion greater than 1.0 N/mm² as per BS 1881.

Supplying and fixing of rebaring chemicals Fosroc Lokfix E55 S-venylester chemical anchor grout or equivalent for various diameter of reinforcement bar at provided embedment depth as per manufracturer specification and instructions for use in concrete applications as directed by engineer in charge a) 8 mm dia re-bar at 120mm depth

Supplying and fixing of rebaring chemicals Fosroc Lokfix E55 S-venylester chemical anchor grout or equivalent for various diameter of reinforcement bar at provided embedment depth as per manufracturer specification and instructions for use in concrete applications as directed by engineer in charge b) 10 mm dia re-bar at 150mm depth

Supplying, fitting and placing TMT IS:1786 (Fe 500) bar reinforcement in sub-structure complete as per drawing and technical specifications (b) Super ductile (SD) TMT Reinforcement bar of Fe 500 N/ Sqmm

Construction of RCC railing of M30 Grade in-situ with 20 mm nominal size aggregate, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequat space between vertical posts for expansion, complete as per approved drawings and technical specifications.

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

Dhodar Ali Road (Kamarbandha(Kakodunga) - Amaguri) at Ch-72.455 km, 'Chipping of deteriorated concrete and removal of all loose &friable materials and fully exposing rusted reinforcement followed proper cleaning and removing of rusts and other foreign materials using sand blasting / emery cloths /wire brush etc.including formwork as directed and specified by the department complete

Replacement of corroded reiforcement by cutting and welding new reinforcement of minimum 25mm dia.including lapping on both sides to the specified length as directed and as per relevant IS/IRC codes and costsof gas ,weldind rods ,higher charge of welding machines etc. including formwork as required .(reinforcement to be measured and paid seperately)

Supplying and applying two coats of Zinc rich anti-corrosive protective coating with "Nitozinc primer" of Fosroc or euivalent @ 0.20 Lit per Sqm over thoroughly cleaned and prepared steel bars including formwork as directed and specified by the department complete.

Supplying and applying Epoxy based bonding agent Nitobond EP of Fosroc Chemicals or MasterBrace 1414 of BASF or euivalent @ 0.50 Lit pe sqm after totally saturating the cleaned concrete surface with clean water for proper bonding of old and new concrete including formwork as specified and directed by the department complete.

Patching of damaged concrete surface with polymer concrete and curing compounds, initiator and promoter, available in present formulations, to be applied as per instructions of manufacturer and as approved by the Engineer.

Repair of joint Grooves with Epoxy Mortar Repair of spalled joint grooves of contraction joints, longitudinal joints and expansion joints in concrete pavements using epoxy mortar or epoxy concrete)

Providing & fixing 16mm dia MS nozzles in a grid of 1m c/c up to the half of the thickness of the concrete structure.A grout slurry of neat cement & chloride free expanding grout Cebex 100 of Fosroc Chemicals or Mastergrout CPG-1 of Choksey Chemicals or MasterFlow 150 of BASF or equivalent @ 0.5% by weight of cement water cement ratio 0.35 to 0.40 and viscosity not more than 1.02 centipoise with grouting pressure till the refusal of injection grout . The grouting operation pressure shall be 2Kg/sq.cm.Cutting the exposed nozzle after the grouting with a good cutter to make the surface free from the grouting pipes and to seal the gap with plugging compound Masterplug of Choksey Chemicals as per the specification and the direction of the department complete including formwork.

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy

Sealing of crack / porous concrete with Epoxy Grout by injection through nipples complete as per clause 2803.1.

Providing and applying Deckguard E 2000 or Masterseal 878 of BASf or equivalent a High Performance Anticarbonation Protective Coating System, over the prime surface using an airless spray or roller at right angles to each other @ coverage of 5 Sqm per litre per coat @ 200 microns wft / 100 microns DFT with an intercoat period of minimum 12 hrs @ 35ºC. The coverage per litre for 2 coats shall be 2.5 Sqm @ 200 microns DFT. The protective coating system should have CO2 diffusion resistance not less than 240mm equivalent of air thickness and 60cm equivalent of 30N concrete along with a water vapour transmission resistance of less than 1.0 metre (Taywood method), the coating should have static crack accommodation of not less than 2mm (BRE) and adhesion greater than 1.0 N/mm² as per BS 1881.

Supply and fixing of rebaring chemical Fosroc LOKFIX E55 S- Vinylester Chemical anchor grout or equivalent for various diameters of reinforcement bar at provided embedment depth as per the manufacturer’s specification and instructions for use in concrete applications as directed by Engineer in charge. A.. 8mm dia rebar at 120 mm depth.

Supply and fixing of rebaring chemical Fosroc LOKFIX E55 S- Vinylester Chemical anchor grout or equivalent for various diameters of reinforcement bar at provided embedment depth as per the manufacturer’s specification and instructions for use in concrete applications as directed by Engineer in charge. B. 10 mm dia bar rebar at 150mm depth.

Supplying, fitting and placing TMT bar reinforcement in sub-structure complete as per drawing and technical specifications (ii)Super Ductile (SD) TMT reinforcement bar of Fe-500 N/mm2

Construction of precast RCC railing of M30 Grade, aggregate size not exceeding 12 mm, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequat space between vertical posts for expansion, complete as per approved drawings and technical specifications.

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

Non-destuctive testing with Ultrasonic Pulse Velocity Meter with data storage facility for detection of cracks, voids and other imperfections in Reinforced concrete structures and furnishing the findings thereof in proper comprehensible format , complete as directed by the department.

Conducting Concrete Core tests of 75mm diacores, on concrete stucture, as per stipulated procedures, for determination the equivalent cube compressive strength, concrete of the structures including preparation and furnishing the report showing the findings thereof in proper comprehensible format , complete as directed by the department.

Dhodar Ali Road (Kamarbandha(Kakodunga) - Amaguri) at Ch-86.55km 'Chipping of deteriorated concrete and removal of all loose &friable materials and fully exposing rusted reinforcement followed proper cleaning and removing of rusts and other foreign materials using sand blasting / emery cloths /wire brush etc.including formwork as directed and specified by the department complete

Replacement of corroded reiforcement by cutting and welding new reinforcement of minimum 25mm dia.including lapping on both sides to the specified length as directed and as per relevant IS/IRC codes and costsof gas ,weldind rods ,higher charge of welding machines etc. including formwork as required .(reinforcement to be measured and paid seperately)

Supplying and applying two coats of Zinc rich anti-corrosive protective coating with "Nitozinc primer" of Fosroc or euivalent @ 0.20 Lit per Sqm over thoroughly cleaned and prepared steel bars including formwork as directed and specified by the department complete.

Supplying and applying Epoxy based bonding agent Nitobond EP of Fosroc Chemicals or MasterBrace 1414 of BASF or euivalent @ 0.50 Lit pe sqm after totally saturating the cleaned concrete surface with clean water for proper bonding of old and new concrete including formwork as specified and directed by the department complete.

Patching of damaged concrete surface with polymer concrete and curing compounds, initiator and promoter, available in present formulations, to be applied as per instructions of manufacturer and as approved by the Engineer.

Repair of joint Grooves with Epoxy Mortar Repair of spalled joint grooves of contraction joints, longitudinal joints and expansion joints in concrete pavements using epoxy mortar or epoxy concrete)

Providing & fixing 16mm dia MS nozzles in a grid of 1m c/c up to the half of the thickness of the concrete structure.A grout slurry of neat cement & chloride free expanding grout Cebex 100 of Fosroc Chemicals or Mastergrout CPG-1 of Choksey Chemicals or MasterFlow 150 of BASF or equivalent @ 0.5% by weight of cement water cement ratio 0.35 to 0.40 and viscosity not more than 1.02 centipoise with grouting pressure till the refusal of injection grout . The grouting operation pressure shall be 2Kg/sq.cm.Cutting the exposed nozzle after the grouting with a good cutter to make the surface free from the grouting pipes and to seal the gap with plugging compound Masterplug of Choksey Chemicals as per the specification and the direction of the department complete including formwork.

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy

Sealing of crack / porous concrete with Epoxy Grout by injection through nipples complete as per clause 2803.1.

Providing and applying Deckguard E 2000 or Masterseal 878 of BASf or equivalent a High Performance Anticarbonation Protective Coating System, over the prime surface using an airless spray or roller at right angles to each other @ coverage of 5 Sqm per litre per coat @ 200 microns wft / 100 microns DFT with an intercoat period of minimum 12 hrs @ 35ºC. The coverage per litre for 2 coats shall be 2.5 Sqm @ 200 microns DFT. The protective coating system should have CO2 diffusion resistance not less than 240mm equivalent of air thickness and 60cm equivalent of 30N concrete along with a water vapour transmission resistance of less than 1.0 metre (Taywood method), the coating should have static crack accommodation of not less than 2mm (BRE) and adhesion greater than 1.0 N/mm² as per BS 1881.

Supply and fixing of rebaring chemical Fosroc LOKFIX E55 S- Vinylester Chemical anchor grout or equivalent for various diameters of reinforcement bar at provided embedment depth as per the manufacturer’s specification and instructions for use in concrete applications as directed by Engineer in charge. A.. 8mm dia rebar at 120 mm depth.

Supply and fixing of rebaring chemical Fosroc LOKFIX E55 S- Vinylester Chemical anchor grout or equivalent for various diameters of reinforcement bar at provided embedment depth as per the manufacturer’s specification and instructions for use in concrete applications as directed by Engineer in charge. B. 12 mm dia bar rebar at 180mm depth.

Supplying, fitting and placing TMT bar reinforcement in sub-structure complete as per drawing and technical specifications (ii)Super Ductile (SD) TMT reinforcement bar of Fe-500 N/mm2

Construction of RCC railing of M30 Grade in-situ with 20 mm nominal size aggregate, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequat space between vertical posts for expansion, complete as per approved drawings and technical specifications.

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

Non-destuctive testing with Ultrasonic Pulse Velocity Meter with data storage facility for detection of cracks, voids and other imperfections in Reinforced concrete structures and furnishing the findings thereof in proper comprehensible format , complete as directed by the department.

Conducting Concrete Core tests of 75mm diacores, on concrete stucture, as per stipulated procedures, for determination the equivalent cube compressive strength, concrete of the structures including preparation and furnishing the report showing the findings thereof in proper comprehensible format , complete as directed by the department.

Dhodar All Road (Kamarbandha(Kakocunga) - Amaguri)at Ch-94.05Km Chipping of deteriorated concrete and removal of all loose & friable materials and fully exposing rusted reinforcement followed by proper cleaning and removing of rusts and other foreign materials using sand blasting/ emery cloths/ wire brush etc. including formwork as directed and specified by the department complete

Supplying and applying Epoxy based bonding agent Nitobond EP of Fosroc Chemicals or MasterBrace 1414 of BASF or euivalent @ 0.50 Lit pe sqm after totally saturating the cleaned concrete surface with clean water for proper bonding of old and new concrete including formwork as specified and directed by the department complete.

Patching of damaged concrete surface with structural grade polymer modified reinstatement mortar to like Fosroc Renderoc S2 or equivalent at a thickness of 10 to 20mm as per instructions of manufacturer and as approved by the Engineer.The prepacked repair mortar should have a compressive strength 45 N/mm²,Flexure strength 8 N/mm² at 28 Days.

Repair of joint Grooves with Epoxy Mortar Repair of spalled joint grooves of contraction joints, longitudinal joints and expansion joints in concrete pavements using epoxy mortar or epoxy concrete)

Providing & fixing 16mm dia MS nozzles in a grid of 1m c/c up to the half of the thickness of the concrete structure.A grout slurry of neat cement & chloride free expanding grout Cebex 100 of Fosroc Chemicals or Mastergrout CPG-1 of Choksey Chemicals or MasterFlow 150 of BASF or equivalent @ 0.5% by weight of cement water cement ratio 0.35 to 0.40 and viscosity not more than 1.02 centipoise with grouting pressure till the refusal of injection grout . The grouting operation pressure shall be 2Kg/sq.cm.Cutting the exposed nozzle after the grouting with a good cutter to make the surface free from the grouting pipes and to seal the gap with plugging compound Masterplug of Choksey Chemicals as per the specification and the direction of the department complete including formwork.

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy

Sealing of crack / porous concrete with Epoxy Grout by injection through nipples complete as per clause 2803.1.

Providing and applying Deckguard E 2000 or Masterseal 878 of BASf or equivalent a High Performance Anticarbonation Protective Coating System, over the prime surface using an airless spray or roller at right angles to each other @ coverage of 5 Sqm per litre per coat @ 200 microns wft / 100 microns DFT with an intercoat period of minimum 12 hrs @ 35ºC. The coverage per litre for 2 coats shall be 2.5 Sqm @ 200 microns DFT. The protective coating system should have CO2 diffusion resistance not less than 240mm equivalent of air thickness and 60cm equivalent of 30N concrete along with a water vapour transmission resistance of less than 1.0 metre (Taywood method), the coating should have static crack accommodation of not less than 2mm (BRE) and adhesion greater than 1.0 N/mm² as per BS 1881.

Supply and fixing of rebaring chemical Fosroc LOKFIX E55 S- Vinylester Chemical anchor grout or equivalent for various diameters of reinforcement bar at provided embedment depth as per the manufacturer’s specification and instructions for use in concrete applications as directed by Engineer in charge. a) 8 mm dia re-bar at 120mm depth

Supply and fixing of rebaring chemical Fosroc LOKFIX E55 S- Vinylester Chemical anchor grout or equivalent for various diameters of reinforcement bar at provided embedment depth as per the manufacturer’s specification and instructions for use in concrete applications as directed by Engineer in charge. b) 10 mm dia re-bar at 150mm depth

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).

Dismantling of Flexible Pavements (Dismantling of flexible pavements and disposal of dismantled materials up to a lead of 1000 metres, stacking serviceable and unserviceable materials separately) I. By Manual Means A.Bituminous courses

Bituminous Concrete (Providing and laying bituminous concrete with 100-120 TPH batch type hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 5.4 to 5.6 % of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoRT&H specification clause No. 509 complete in all respects) (including carriage up to initial lead of 5.0 km from quarry and carriage of mixed materials up to 10.0 Km initial lead from mixing plant )( Including cost of testing of materials at site and laboratory as directed by the deptt.) (A) With hydrated lime/cement as filler (refer table 500-9 of MoRT&H specification) (I) with 60/70 or VG-30 grade bitumen (i) for Grading-I ( 19 mm nominal size )

Dense Graded Bituminous Macadam (Providing and laying dense bituminous macadam with 100-120 TPH batch type HMP producing an average output of 75 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 4.0 to 4.5% by weight of total mix of mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoRT&H specification clause No. 507 complete in all respects) ( including carriage up to initial lead of 5.0 km from quarry and carriage of mixed materials up to 10.0 Km initial lead from mixing plant ) (Including cost of testing of materials at site and laboratory as directed by the deptt.) (a) With hydrated lime/cement as filler ( refer table 500-9 of MoRT&H specification) (I) with 60/70 or VG-30 grade bitumen (i) for Grading I ( 40 mm nominal size )

Supplying, fitting and placing TMT bar reinforcement in sub-structure complete as per drawing and technical specifications (b) Super ductile (SD) TMT Reinforcement bar of Fe 500 N/ Sqmm

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

Non-destuctive testing with Ultrasonic Pulse Velocity Meter with data storage facility for detection of cracks, voids and other imperfections in Reinforced concrete structures and furnishing the findings thereof in proper comprehensible format , complete as directed by the department.

Conducting Concrete Core tests of 75mm diacores, on concrete stucture, as per stipulated procedures, for determination the equivalent cube compressive strength, concrete of the structures including preparation and furnishing the report showing the findings thereof in proper comprehensible format , complete as directed by the department.

RANJIT BORGOHAIN

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