Konkan Railway Corporation Limited Tender

1.1--Carriage of materials by Mechanical transport including loading, unloading and stacking. ( for shifting released materials) 153 4.00 cum 2222.42 8889.68 39.56 12406.44 4

022030---Providing and laying in position Plain cement concrete of specified Nominal 1 Mix for 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 : 022032--1:2:4 (1 cement : 2 coarse sand (zone-III) : 4 graded stone aggregate 20 mm nominal size)

022050--Providing and laying in position machine batched, machine mixed and machine vibrated Design Mix Cement Concrete of specified grade (Cast in-Situ) using 20mm graded crushed stone aggregate and coarse sand of approved quality for the following Reinforced cement 2 concrete structural elements up to height of 10 m from foundation top level, including finishing, using Admixtures in approved proportions (as per IS:9103), to modify workability & other properties without impairing strength and durability complete as per specifications and direction of the Engineer in charge. Payment for cement, reinforcement, shuttering shall be paid extra. 022054----Approach slab at formation level, Dirt wall/ballast wall at formation level

052110---Applying pre-packed cement based polymer mortar of strength 45 Mpa (28 days) for replacement of spalled concrete with average thickness of 10mm as per manufacturer's specification and approved procedure.

222120--Providing & applying epoxy with pot life not less than 60-90 minutes for bonding of new concrete with old concrete @ 0.80 kg/sqm and as per specification including cleaning the surface complete as per approved procedure.

222090--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.

222190---Removing all loose concrete, cleaning rust with dusting compound & water jet, drying, replacing worn out reinforcements by welding new re-inforcement for making up lost steel section, applying approved anti-corrosive polymer coating over the damaged area to proper profile, 3 providing polymer mortar (upto 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. Cost of cement & inforcement to be paid separately. 222192--20-50 mm. Thick polymer concrete

1.NS--Chipping off existing concrete/mortar to remove spalled and loose concrete upto a depth of 75mm of any grade concrete for distressed RCC members with contractors labour, tools etc.

2.NS--Providing and applying corrosion inhibiting coating (MC MAUCHEMIE COLUSAL 2 MK COLUSAL 25) or equivalent to exposed steel reinforcement surface after removing all loose rust and scales from the steel surface by wire brushing etc.

3.NS--Providing structurally sound scaffolding system with working platform made of steel with wooden planks as per approved design and as directed by Engineer-in-charge with all cont materials, tools and labour etc.

025060--Supply and using Cement at Worksite 025062---Ordinary Portland Cement 53 grade

025070--Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete 025072--Thermo-Mechanically Treated bars of grade Fe- 500D or more

0411260--Painting cleaned bridge plate/composite girders including all scaffolding, 1 shuttering and strutting along with provision of Jhoola/hanging scaffolding ladders etc. Where required. 0411263--With two coats Aluminium paints in dual containers conforming to IS:2339 with DFT of 12-14 Microns for each.

052170-- Supply, fabrication and erection of steel members to replace existing corroded members of built up section made up of MS plate, angles, channels of different thickness and sizes including painting with one coat of ready mix paint Zinc Chromate priming to IS:104 followed by one coat of ready mix paint red-oxide Zinc Chrome priming paint to IS:2074. Structural 1 steel should conform to IS:2062 E250- Grade'B0'. Fabrication and erection to be as per existing design initially by bolts and nuts and finally by rivetting during the sanctioned traffic block. Rate includes cutting of new steel work, removal of rivets by drilling, dismantling of any existing members required for inserting fabricated members, fixing of new fabricated built up members with all tools, plants, labour, consumables, machinery and accessories etc. Work will be executed as per IRS:B 1- 2001. Note: Painting shall be paid extra under relevant item.