South East Central Railway Tender

Providing and laying in position Plain cement concrete of specified Nominal Mix for 6 miscellaneous works like side drains, foundation for OHE masts and other miscellaneous structures excluding the cost of Cement, centering and shuttering - All work up to plinth level : 1:3:6 (1 Cement : 3 coarse sand (zone-III) : 6 graded stone aggregate 20 mm nominal size)

Providing and laying in position machine batched, machine mixed and machine vibrated Cement Concrete of specified grade as per approved Design Mix (mixed in Mobile Concrete Batching/Mixing Plant at site or RMC from approved plants) using 20mm graded crushed stone aggregate and coarse sand of approved quality for the following Reinforced cement concrete structural elements up to height of 9.0 m from foundation top level, including finishing, using 7 Plasticiser in approved proportions (as per IS:9103), to modify workability without impairing strength and durability complete as per specifications and direction of the Engineer in charge. Note: 1. Payment for cement, reinforcement and shuttering shall be made extra under relevant item. 2. Plasticiser shall invariably be used in approved proportion to increase workability with minimum possible quantity of cement for all grade of Design Mix Concrete unless it is specifically approved citing reasons for not using plasticiser at the stage of Mix Design and in that case deduction shall be made as per relevant item. Abutment & Pier

Providing and laying in position machine batched, machine mixed and machine vibrated Cement Concrete of specified grade as per approved Design Mix (mixed in Mobile Concrete Batching/Mixing Plant at site or RMC from approved plants) using 20mm graded crushed stone aggregate and coarse sand of approved quality for the following Reinforced cement concrete structural elements up to height of 9.0 m from foundation top level, including finishing, using 8 Plasticiser in approved proportions (as per IS:9103), to modify workability without impairing strength and durability complete as per specifications and direction of the Engineer in charge. Note: 1. Payment for cement, reinforcement and shuttering shall be made extra under relevant item. 2. Plasticiser shall invariably be used in approved proportion to increase workability with minimum possible quantity of cement for all grade of Design Mix Concrete unless it is specifically approved citing reasons for not using plasticiser at the stage of Mix Design and in that case deduction shall be made as per relevant item. Wing wall and Return wall

Providing and laying in position machine batched, machine mixed and machine vibrated Cement Concrete of specified grade as per approved Design Mix (mixed in Mobile Concrete 9 Batching/Mixing Plant at site or RMC from approved plants) using 20mm graded crushed stoneaggregate and coarse sand of approved quality for the following Reinforced cement concrete structural elements up to height of 9.0 m from foundation top level, including finishing, using Plasticiser in approved proportions (as per IS:9103), to modify workability without impairing strength and durability complete as per specifications and direction of the Engineer in charge. Note: 1. Payment for cement, reinforcement and shuttering shall be made extra under relevant item. 2. Plasticiser shall invariably be used in approved proportion to increase workability with minimum possible quantity of cement for all grade of Design Mix Concrete unless it is specifically approved citing reasons for not using plasticiser at the stage of Mix Design and in that case deduction shall be made as per relevant item. Approach slab at formation level, Dirt wall/ ballast wall at formation level

Providing and laying Plain Cement Concrete 1:3:6 with graded stone aggregate of 10 40mm nominal size, in foundation and floors, retaining walls of bridges including mechanical mixing, vibrating, pumping and bailing out water where ever required with all materials and labour complete but excluding the cost of cement and shuttering as per drawings and technical specifications as directed by Engineer.

Providing and fixing Weep Holes in Abutments, Wing walls and Return walls etc., of new bridges with 110mm dia UPVC pipe Type A ISI marked with all contractor's men, material, transportation, all taxes as per specifications and as directed by Engineer-in-Charge.

Centering and shuttering including strutting, propping etc. and removal of form for : 12 All types of bridge sub-structures, e.g. pier, abutment, wing wall, retaining wall, RCC box type foundations, Abutment cap, Pier Cap, Inspection Platform & Pedestal over Pier cap, Fender wall, Diaphragm wall etc. up to 5m above ground level

Centering and shuttering including strutting, propping etc. and removal of form for : All types of bridge super-structures, e.g. slabs, I-girders, T-girders, Box girders etc. up to 5m above ground level.

Supply and using Cement at Worksite Ordinary Portland Cement 53 grade of approved brands/makes

Supply of steel reinforcement of approved brands/makes for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete. Thermo-Mechanically Treated bars of grade Fe-500D or more of approved brands/makes.

Providing and laying boulders apron on river bed for protection against scour with stone boulders weighing not less than 35 kg each with voids filled with spalls complete as per drawing and Technical Specification.

Providing and laying Pitching with Stone Boulders, weighing not less than 35kg each 17 with voids filled with cement sand mortar 1:4 on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment complete as per drawing and Technical Specifications (filter media to be paid separately under the relevant item). Rate is excluding cost of cement which shall be paid extra under relevant item.

Supply and laying of quarry dust including consolidation, supply of all materials, 18 labour, lead, lift, tools, plants, crossing of tracks as per drawing and technical specification as directed by the Engineer in charge in case loose slush is encountered at site of foundation before casting the foundation or laying the filtering media.

Guniting concrete surface with cement mortar of average thickness 25mm along with 19 wire mesh 50x50x3mm, applied with compressor after cleaning surface and spraying complete including curing as per procedure and technical specifications given under Para 209.3 of IRBM. Rate is excluding the cost of cement which shall be paid extra.

Providing and inserting nipples of size 12 to 20 mm dia. with approved fixing compound after drilling holes for grouting as per Technical Specifications including subsequent cutting/removal and sealing of the hole as necessary after completion of grouting.

Grouting of masonry/concrete by injection process duly Sealing of cracks, through nipples complete as per Technical Specification and procedure given in IRBM Para No 209 including necessary admixture. Payment shall be as per use of cement by weight in case of neat cement/cement mortar grouting and weight of Epoxy in case of Epoxy Grouting. (Cement will be paid extra). Epoxy Grout

Applying epoxy mortar over leached, honey combed and spalled concrete surface and exposed steel reinforcement complete as per Technical Specification with average thickness of 10mm including priming coat, mortar plaster and seal coat of epoxy.

Providing and fixing of Drainage Spouts of 110mm UPVC Type A ISI marked (Working pressure 4 kg/sqcm) using suitable clamps and adhesive etc., complete.

Removing all loose concrete, cleaning rust with dusting compound & water jet, drying, replacing worn out reinforcements by welding new reinforcement for making up lost steel section, applying approved anti-corrosive polymer coating over the damaged area to proper profile, providing 24 polymer mortar (up to 20mm thickness) or polymer concrete (more than 20mm thickness) consisting of cement, sand, 6mm down chips where required and polymer as per manufacturers' specification. The rate includes curing for 14 days, all materials, consumables, labours, tools and plants, scaffolding/staging with all lead and lift. Note: Cost of reinforcement, if used, to be paid separately. 20mm thick polymer mortar

Providing & laying non pressure NP-4 Class RCC pipe with collars, jointing with 1:2 25 cement and ordinary sand mortar including testing of joints, but excluding earthwork with all labour and material as a complete job. Cement for mortar will be paid separately.(Pipes of 600mm dia and above will be laid using crane/hydra). 1000mm dia.

Providing & laying non pressure NP-4 Class RCC pipe with collars, jointing with 1:2 26 cement and ordinary sand mortar including testing of joints, but excluding earthwork with all labour and material as a complete job. Cement for mortar will be paid separately.(Pipes of 600mm dia and above will be laid using crane/hydra). 1200mm dia.

Strengthening structural elements with non metallic composite fiber wrapping system comprise of uni-directional carbon fiber sheet(430 SM)and compatible saturant;by wet layup system including surface preparation(Grinding/Moulding concrete substrate, cleaning it with wire brush,removing oils, laitance if present,rounding sharp edges to min 25mm radius) etc complete including Profiling, Applying compatible primer on prepared substrate. Filling the holes and uneven 1 surface with thixotropic putty etc. complete. Mechanized wetting of fiber sheet:Cutting the fabric to required size. Mixing of saturant and filling in tub area of the saturation machine. Placing the fiber on metallic rods and pass through the rollers of machine and saturant tub ensuring complete wetting(65% fiber volume fraction of fibers. Remove the fiber on rod and place the new fiber sheet Wrapping. Wrapping the fiber sheet to structural element at desired orientation using tamping roller to avoid any air voids etc. repeat the same procedure for multiple layer with the interval of 8 hrs. Second Coat: Applying second coat of saturant after min. 12 hrs, rectify air voids if any.(Mode of measurement: Per sq.mt of carbon fiber sheet consumed and not surface area of application.

Providing and fixing carbon fiber anchor including drilling hole in the base concrete fixing the anchor using epoxy 50x55 system spreading the anchor fibers in star pattern including application of saturnat etc.complete.

P&A Anti Carbonation aliphatic acrylic coating of the complete soffit of the bridge and piers including cleaning the concrete surface using appropriate mechanical means ancluding primer and two coats of the anti carbonation aliphatic acrylic coating etc.complete.

Applying procured-carbon Groove Laminates System(1.4mm thick and 100mm wide) with compatible structural adhesive ncluding,Profiling: Applying compatible primer on prepared stubstrate, Filling the holes and uneven surface with thixotropic putty etc.complete. Application of Plate: Marking the application are on structural element, cutting the plate to require size,applying compatible structural adhesive on plate in parabolic manner by dhesive, laminating machine, paste the laminate on desire area by using tamping roller to avoid any air voids, post tensioning by applying required tension to laminate by appropriate method where required and as approved by Railway etc.,complete.Mode of measurement:Per running meter of 100mm wide and 1.4mm thick plate applied.

Removing & Cleaning or grinding of existing concrete carefully by low impact high frequency hammer or any other suitable method without damaging the existing concrete including cleaning the surfaces by air jet etc.complete.