Repair and Retrofitting work of High Level Bridge in 16th km of Dantu Kathara Road At Damodar River under Road Division, Bokaro for the Year 2025-26

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 clearing 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. 50 mm average thickness

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. Bars above 12 mm diameters

Finishing with Epoxy Paint ( two or more Coats) at on location prepared and applied as per manufactures specifications including appropriate priming coat , preparation of surface etc complete on concrete work

Epoxy bonding of new concrete to old concrete

Applying pre-packed cement based polymer mortar of strength 45 Mpa at 28 days for replacement of spalled concrete 25 mm (avg.) thickness in single layer

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. 25 mm average thickness in 2 layers.

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

Supplying, Fitting and Placing un-coated HYSD bar Reinforcement in Foundation complete as per Drawing and Technical Specifications.

Drilling suitable holes in reinforced or plain cement concrete with power driven drill machine to a minimum depth of 100mm upto 200mm in RCC beams, lintels, columns and slabs to introduce steel bars for sunshades/balconies including fixing the steel bars in position using epoxy resin anchor grout of approved make but excluding the cost of reinforcement, all complete as per direction of Engineer-In-Charge. Upto and including 12mm dia.

Centering and shuttering including strutting, propping etc. and removal of form for Columns, Pillars, Piers, Abutments, Posts and Struts

Micro Concrete Encasement Mixing and pouring La Struc Rep MC 60 by mixing 10mm down aggregate @25% by the weight of Micro-concrete and water as per datasheet by slow speed stirrer. The rate to include material, labour tools & tackles all complete

Grinding the surface to make it smooth free from all protrusions by mechanical cup grinder. The rate to include material, labour, tools and tackles all complete

Supplying and applying single coat of La Strucwrap Primer (after mixing two components thoroughly by a slow speed stirrer) by a brush and roller after thorough mixing. The rate to include materials, tools, tackles, labour all complete

Supplying and applying for rendering with thin Epoxy Putty of Lagreens India Pvt Ltd over La Structwrap primer to further smoothen the surface making it free from pin holes, blow holes imperfection at edges etc.as per manufacturer's specification.(Rate is on the measurement on gross area.)

Apply single coat of Strucwrap Epoxy Saturant and wrapping a single layer of La Strucwrap CF of LaGreens India Pvt. Ltd. Carbon fibre cloth of 230 GSM taking care there is good bonding with the substrate without any warping or, air gaps. The direction of the Carbon Fibre should to be as per the design requirement as directed by the E.I. Supplying and applying 2nd coat of Strucwrap saturant on the Carbon fibre when the 1st coat is still wet.

Supplying and applying single coat of La Strucwrap Primer (after mixing two components thoroughly by a slow speed stirrer) by a brush and roller after thorough mixing. The rate to include materials, tools, tackles, labour all complete

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. 25 mm average thickness in 2 layers.

Direction and Place Identification signs with size more than 0.9 sqm size board. (Providing and erecting direction and place identification retro- reflectorised sign asper IRC :67 made of encapsulated lens type reflective sheeting vide clause 801.3, fixed over aluminium sheeting, 2 mm thick with area exceeding 0.9 sqm supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm, 2 Nos. firmly fixed to the ground by means of properly designed foundation with M 15 grade cement concrete 45 cm x 45 cm x 60 cm, 60 cm below ground level as per approved drawing)

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Labour cess 1%

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