Reconstruction of Distressed span (Udalguri side) and strengthening/Rehabilitation of other components of Bridge no 11/1 on NH-715A under PWD Rangia NH Division, under Annual Plan 2024-25 in the state of Assam. (Job No. Br/715A/AS/2025-26/285)

Dismanteling of RCC by mechanical mean for culvert (Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material,disposal of unserviceable material and stacking the serviceable material with all lift and lead of 1000 metres) (II) By Mechanical Means for items No. 202( b) & ( c) B ''Prestressed / Reinforced cement concrete grade M-20 & above

Supplying and fitting and fixing in position elastomer bearing Supplying, fitting and fixing in position true to line and level elastomeric bearing conforming to IRC: 83 (Part-II) section IX and clause 2005 of MoRTH specifications complete including all accessories as per drawing and Technical Specifications. At Br No- 11/1

Furnishing and Placing Reinforced/Prestressed cement concrete in super-structure as per drawing and Technical Specification' including steel shuttering formwork. (P)'With plasticiser ( Masterplast PL-1/SPL-2 or equivalent ), air entraining and water reducing plasticiser ( Masterplast PAE or equivalent) and accelerating plasticiser ( Masterplast ACPL or equivalent) conforming to IS-9103-1999. (B)RCC Grade M25 Case-(II)Using Batching Plant, Transit Mixer and Concrete Pump(C) (ii)For T-beam & slab,(b)Height 5m to 10m

Provision of an Reinforced cement concrete crash barrier at the edges of the road , approaches to bridge structures and medians , consturcted with concrete with HYSD/TMT reinforcement conformng to IRC:21 and dowel bar 25mm dia, 450mm long at expansion jonts filled with pre moulded asphalt filler board ,keyed to the structure on which it is built and installed as per design given in the enclosure to MOST circular no. RW/NH-33022/1/94-DO III dated June 1994 as per dimension in the approved drawing and at locations directed by the Engineer ,all as specified.(With M40 Grade concrete) Br No-11/1 Br No-11/1 crash barrier over deck slab

Reinforcement in Super Structure: Supplying, fitting and placing TMT bar reinforcement in super-structure including splicing complete as per drawing and technical specifications Br No-11/1 Bridge No.11/1,Superstructure.

Removal of defective concrete, cleaning the surface thoroughly, applying the shotcrete mixture mechanically with compressed air under pressure, comprising of cement, sand, coarse aggregates, water and quick setting compound in the proportion as per clause 2807.1. sand and coarse aggregates conformiong to IS : 383 and table 1 of IS:9012 respectively, water cement ratio ranging from 0.35 to 0.50, density of gunite not less than 2000Kg/cum. , strength not less than 25Mpa and workmanship conforming to to clause no.2807.6

Supplying and applying Epoxy based bonding agent Masterbond EP of Choksey Chemicals 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.

Supplying 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 '10mm dia rebar at 150mm depth

Supplying 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 '12mm dia rebar at 180mm depth

Drilling 14 mm dia holes on the concrete surface to a depth of 75mm using a rotary cum hammering,drilling machine as per specification and throughly cleaning the hole using compressed air & water jet and fixing of shear connectors of 8mm dia and anchoring it with polyester resin anchor grout Lokfix P of Fosroc india and as per manufacture's specifications.(Cost inclusive of drilling,cleaning,fixing, steel,labour,tools and tackles)

Supplying, fitting and placing TMT bar reinforcement in sub-structure complete as per drawing and technical specifications

Reinforcement in Super Structure: Supplying, fitting and placing TMT bar reinforcement in super-structure including splicing complete as per drawing and technical specifications(i) TMT Corrosion Resistant Steel (CRS) reinforcement bar of Fe-500 N/mm2 (i) TMT Corrosion Resistant Steel (CRS) reinforcement bar of Fe-500 N/mm2

Plain/Reinforced cement concrete, in sub structure complete as per drawing and technical specification and steel shuttering formwork ''With plasticiser ( Masterplast PL-1/SPL-2 or equivalent ), air entraining and water reducing plasticiser ( Masterplast PAE or equivalent) and accelerating plasticiser ( Masterplast ACPL or equivalent) conforming to IS-9103-1999.

Furnishing and Placing Reinforced/Prestressed cement concrete in super-structure as per drawing and Technical Specification' including steel shuttering formwork.' 'With plasticiser ( Masterplast PL-1/SPL-2 or equivalent ), air entraining and water reducing plasticiser ( Masterplast PAE or equivalent) and accelerating plasticiser ( Masterplast ACPL or equivalent) conforming to IS-9103-1999.

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

Concreting of the structure with free flow nonshrink cementitious microconcrete withRenderoc RG of Fosroc or equivalent,after proper mixing with clean water including formwork followed by proper curing for 28 days as per manufacturer'sspecifications complete and directed by the department .

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 Nitocote UR 512 (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.

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).

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 25 mm thick Asphalt concrete including of close Graded Premix Surfacing(CGPS) materials with Type -a aggregate as per APWD SOR tem no 5.11 & MOSRT&H Specification Nos 512 including all lead and lift as directed.

Excavation for Structures (Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material.

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 or Master Brace 1414 of BASF 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.

Reinforcement in Foundation: Supplying, fitting and placing un-coated TMT bar reinforcement in foundation complete as per drawing and technical specifications