North Central Railway Tender

Supply and using Cement at Worksite Ordinary Portland Cement 43 grade approved brands/makes

Providing and laying boulders apron on river bed for protection against scour with stone boulders 5 weighing not less than 35 kg each with voids filled with spalls complete as per drawing and Technical Specification.

Laying of boulder apron laid in wire crates of approved size including overlaps at joints, laid with stone boulders, all loose ends to be tied with 4mm galvanised steel wire. Payment for boulders & wire crates to be done extra. 051030 170.00 cum 1153.97 196174.90 (-) 10.41 175753.09

Supplying of stone boulders weighing not less than 35 kg each at specified bridge locations.

Manufacture and supplying Galvanized Wire Net Trungers made from 4mm galvanised steel wire @ 32 kg/10sqm having minimum tensile strength of 300 Mpa conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into mesh with double twist, mesh size not exceeding 100mm x 100mm.

Providing and laying Pitching with Stone Boulders, weighing not less than 35kg each with voids 9 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.

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 11 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). Neat Cement Grout with 20% anti shrinkage compound w.r.t. cement.

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- 12 corrosive polymer coating over the damaged area to proper profile, providing 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

Painting the HFL mark and Danger level mark, year of HFL on bridge abutments and piers with ready mixed paint as per standard in two coats over one coat of primer with all materials, labour, tools, scaffolding, all lead and lift etc. including writing complete.

Providing cast in situ bridge number plaques as per Railway drawing in cement concrete 1:2:4 mix 14 using 20mm hard stone aggregate embedded in 30mm notch in Bridge parapet coping duly engraving the letter and figures and an arrow indicating the direction of flow and finishing the top exposed surface with cement mortar 1:3, painting letters and figures with two coats of black enamel paint on two coats of white background with all labour, tools, cement, paint etc. with all leads and lifts.

EARTH WORK // Earth work in excavation by mechanical means (Hydraulic excavator) / manual 1 means in foundation trenches or drains (not exceeding 1.5 m in width or 10 sqm on plan), including dressing of sides and ramming of bottoms, lift upto 1.5 m, including getting out the excavated soil and disposal of surplus excavated soil as directed, within a lead of 50 m. // All kinds of soil.

EARTH WORK // Filling available excavated earth (excluding rock) in trenches, plinth, sides of foundations etc. in layers not exceeding 20cm in depth, consolidating each deposited layer by ramming and watering, lead up to 50 m and lift upto 1.5 m.

CONCRETE WORK // CEMENT CONCRETE (CAST IN SITU) // Providing and laying in position 4 cement concrete of specified grade excluding the cost of centering and shuttering - All work up to plinth level : // 1:3:6 (1 Cement : 3 coarse sand (zone-III) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources)

REINFORCED CEMENT CONCRETE // FORM WORK // Centering and shuttering including strutting, propping etc. and removal of form for // Foundations, footings, bases of columns, etc. for mass concrete

REINFORCED CEMENT CONCRETE // FORM WORK // Centering and shuttering including strutting, propping etc. and removal of form for // Walls (any thickness) including attached pilasters, butteresses, plinth and string courses etc.

REINFORCED CEMENT CONCRETE // STEEL REINFORCEMENT // Steel reinforcement for R.C.C. work including straightening, cutting, bending, placing in position and binding all complete upto plinth level. // Thermo-Mechanically Treated bars of grade Fe-500D or more.

REINFORCED CEMENT CONCRETE // DESIGN MIX CONCRETE // Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of 8 concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 1.10 times of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. // All works upto plinth level // Concrete of M25 grade with minimum cement content of 330 kg /cum

REINFORCED CEMENT CONCRETE // DESIGN MIX CONCRETE // Providing and laying in position ready mixed or site batched design mix cement concrete for reinforced cement concrete work; using coarse aggregate and fine aggregate derived from natural sources, Portland Pozzolana / Ordinary Portland /Portland Slag cement, admixtures in recommended proportions as per IS: 9103 to accelerate / retard setting of 9 concrete, to improve durability and workability without impairing strength; including pumping of concrete to site of laying, curing, carriage for all leads; but excluding the cost of centering, shuttering, finishing and reinforcement as per direction of the engineer-in-charge; for the following grades of concrete. Note: Extra cement up to 10% of the minimum specified cement content in design mix shall be payable separately. In case the cement content in design mix is more than 1.10 times of the specified minimum cement content, the contractor shall have discretion to either re-design the mix or bear the cost of extra cement. // All works above plinth level upto floor V level // Concrete of M25 grade with minimum cement content of 330 kg /cum

MASONRY WORK // Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in foundation and plinth in: // Cement mortar 1:4 (1 cement : 4 coarse sand)

MASONRY WORK // Brick work with common burnt clay F.P.S. (non modular) bricks of class designation 7.5 in superstructure above plinth level up to floor V level in all shapes and sizes in : // Cement mortar 1:4 (1 cement : 4 coarse sand)

CONCRETE WORK // CEMENT CONCRETE (CAST IN SITU) // Providing and laying cement concrete in retaining walls, return walls, walls (any thickness) including attached pilasters, columns, piers, 12 abutments, pillars, posts, struts, buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor etc., up to floor five level, excluding the cost of centering, shuttering and finishing: // 1:1.5:3 (1 cement : 1.5 coarse sand (zone-III) derived from natural sources : 3 graded stone aggregate 20 mm nominal size derived from natural sources).

FINISHING // CEMENT PLASTER (IN FINE SAND) // 15 mm cement plaster on the rough side of single or half brick wall of mix : // 1:4 (1 cement: 4 fine sand)

EARTH WORK // Clearing jungle including uprooting of rank vegetation, grass, brush wood, trees and saplings of girth up to 30 cm measured at a height of 1 m above ground level and removal of rubbish up to a distance of 50 m outside the periphery of the area cleared.

Extra over item nos. 022011 to 022014 for executing the work under water and/or liquid mud to compensate all additional arrangements including pumping out water as required. Note: The extra percentage rate is applicable only for the quantity of work executed under water.