CONSTRUCTION OF 2X30.5M SPAN OWG STEEL BRIDGE

Excavation upto 3m depth — "Earthwork in excavation for foundations and floors of the bridges (pier and abutments of proposed river bridge), retaining walls, toe wall, pathways etc. including dressing, levelling of side and floor, to proper line & level, by mechanical means at the proposed location with all leads & following lifts, etc. cost includes setting out, neat dressing of sides, ramming of bottom, getting out the excavated material, dry and wet excavation below sub soil water where continuously bailing out of water may be required with contractor’s equipment, back filling in layers with approved usable excavated material and compaction of the layers by ramming and watering etc. disposal of surplus soil to an unobjectionable place including all lift and lead upto 3km, including all types of shoring and strutting for slope protection required as per site condition with all labour and material complete as per drawing,technical specification and as directed by Engineer in charge. The quoted rate shall include obtaining any regulatory/statutory approvals from any govt body and/or payment of necessaey royalty/statutory levies applicable for this item. (Measurement for payment of excavation shall be based on drawing dimensions of the footings/raft and level difference between the initial and final readings jointly recorded at site). All kinds of Soil (Earth, Sand, Gravel, Murum) upto 3m depthNote: The contractor shall take into account in his rate, the provision for excessa excavation for necessary working space/slope/steps etc. required for excavation, safety and other allied works and refilling the side slopes and working space after completion of job."

Excavation > 3m depth — "Earthwork in excavation for foundations and floors of the bridges (pier and abutments of proposed river bridge), retaining walls, toe wall, pathways etc. including dressing, levelling of side and floor, to proper line & level, by mechanical means at the proposed location with all leads & following lifts, etc. cost includes setting out, neat dressing of sides, ramming of bottom, getting out the excavated material, dry and wet excavation below sub soil water where continuously bailing out of water may be required with contractor’s equipment, back filling in layers with approved usable excavated material and compaction of the layers by ramming and watering etc. disposal of surplus soil to an unobjectionable place including all lift and lead upto 3km, including all types of shoring and strutting for slope protection required as per site condition with all labour and material complete as per drawing,technical specification and as directed by Engineer in charge. The quoted rate shall include obtaining any regulatory/statutory approvals from any govt body and/or payment of necessaey royalty/statutory levies applicable for this item. (Measurement for payment of excavation shall be based on drawing dimensions of the footings/raft and level difference between the initial and final readings jointly recorded at site). All kinds of Soil (Earth, Sand, Gravel, Murum) above 3m depthNote: The contractor shall take into account in his rate, the provision for excessa excavation for necessary working space/slope/steps etc. required for excavation, safety and other allied works and refilling the side slopes and working space after completion of job."

Excavation - Hard rock — "Earthwork in excavation for foundations and floors of the bridges (pier and abutments of proposed river bridge), retaining walls, toe wall, pathways etc. including dressing, levelling of side and floor, to proper line & level, by mechanical means at the proposed location with all leads & following lifts, etc. cost includes setting out, neat dressing of sides, ramming of bottom, getting out the excavated material, dry and wet excavation below sub soil water where continuously bailing out of water may be required with contractor’s equipment, back filling in layers with approved usable excavated material and compaction of the layers by ramming and watering etc. disposal of surplus soil to an unobjectionable place including all lift and lead upto 3km, including all types of shoring and strutting for slope protection required as per site condition with all labour and material complete as per drawing,technical specification and as directed by Engineer in charge. The quoted rate shall include obtaining any regulatory/statutory approvals from any govt body and/or payment of necessaey royalty/statutory levies applicable for this item. (Measurement for payment of excavation shall be based on drawing dimensions of the footings/raft and level difference between the initial and final readings jointly recorded at site). Hard Rock (blasting prohibited)Note: The contractor shall take into account in his rate, the provision for excessa excavation for necessary working space/slope/steps etc. required for excavation, safety and other allied works and refilling the side slopes and working space after completion of job."

PCC M-15 — Providing and laying plain cement concrete of M-15 grade with 20mm and down size graded stone aggregates for leveling course of foundation, slope protection, misc. works or any other place, including centering & shuttering & removal of form work, tamping, ramming vibrating, curing all as specified in any shape, position, thickness and finishing the top surface rough or smooth, etc. all complete as per drawings, relevent IS code, specifications with all contractor's labour, tools, plants, machinery etc., and as per direction of Engineer-in-Charge.

RCC M-35 — "Reinforced cement concrete M-35 grade (controlled concrete) cast in situ in foundation and substructure for Abutments,Pier, Pile cap, RCC slab, bed block, RCC railing, RCC box culverts / bridges (top slab, bottom slab and walls of any span, length and thickness), return wall and at any other place as directed by EIC using 20mm and below gauge graded crushed stone coarse aggregate and coarse sand, OPC(43/53)/PPC cement as per specification for all depth & height including submission and getting approval of the Design mix from National Testing House, IIT/NIT or approved NABL Lab using Automatic weigh batching method (preferably Ajax etc.), including providing and removal of centering, shuttering, strutting, propping, scaffolding, laying, tamping, ramming, vibrating with needle vibrator, all as specified in any shape, position, thickness and finishing the exposed surface rough or smooth, curing for specified period etc. all ascents, descents, crossing of any obstruction, all lead, lifts all complete as per drawings, specifications, with all contractor's labour, tools, plants, machinery etc., and as per direction of Engineer-in-Charge. Contarctor has to ensure preparation of necessary approach at own expense for his vehicle to work site for executing the item. Rate quoted by contractor shall be inclusive of carrying out all field tests like slump test, casting of cubes and all lab tests like cube compression tests for both 7 days as well as 28 days. Contractor has to carry out NDT tests like rebound hammer test / core cutting for lab test, etc on randomly selected casted members in case of failure of cubes as directed by EIC at his own cost to confirm the compliance to the technical specifications (Item rate includes all abovementioned except Steel reinforcement which will be paid separately under relevent item)."

Dry lean concrete — Construction of dry lean cement concrete of M-10 Grade Sub-base over a prepared sub-grade with coarse and fine aggregate(natural sand/M sand)conforming to IS:383, the size of coarse aggregate not exceeding 25mm,,cement content not to be less than 200kg/cum, optimum moisture content to be determine during trial length construction, mixed in a batching plant/Weigh batch mixer,transported to site with all leads and lifts,laid by suitable means as approved by Engineer-in-charge,compacting with vibratory roller,finishing, curing and including preparation of sub-grade surface if required etc. complete.

PCC M-25 — Supply and laying Plain cement concrete of M-25 grade cast in situ with 20mm and down size graded stone aggregates in Toe wall, return wall for all height, coping, and other misc works as directed by EIC, etc. using 20mm and below gauge graded crushed stone coarse aggregate and coarse sand as per specification derived from natural sources, OPC(43/53)/PPC cement as per specification for all height and depth including submission and getting approval of the Design mix from National Testing House, IIT/NIT or govt engineering college or approved NABL Lab using Automatic weigh batching method (preferably Ajax etc.), including centering and shuttering and removal of form work, tamping, ramming vibrating, curing all as specified in any shape, position, thickness and finishing the exposed surface rough or smooth etc for all ascents, descents, crossing of any obstruction, all lead, lifts etc. all complete as per drawings, relevent IS code provision, specifications with all contractor's labour, tools, plants, machinery etc., and as per direction of Engineer-in-Charge.

Steel Reinforcement — Supplying and Placing in position HIGH STRENGTH DEFORMED STEEL BARS REINFORCEMENT (conforming to IS:1786, Min. Grade Fe 500D), for R.C.C.in piling, pile cap, slabs, piers & other misc work as directed, etc. including transporting the steel, straightening, cleaning, decoiling, cutting, bending to required shapes and lengths as per approved drawing details, binding with contractor’s own 16SWG black soft annealed binding wire at every intersection, supplying and placing with proper cover blocks, supports, chairs, authorised overlaps, welding, spacers, fan hooks etc. for all heights and depths etc. all complete as directed. (SUPPLY OF ALL MATERIAL IN CONTRACTOR’S SCOPE).

Bitumen Emulsion — Supply & applying two coats of bitumen emulsion of Grade RS-1, conforming to IS:8887 on the top surface of concrete deck slab (New bridges), on sides of Abutment walls, pile cap and other places as directed @ 1.70 kg/sqm after cleaning surface with all materials, labour, tools and plants, equipment etc. complete.

Expansion joint filler — Supplying and placing min. 20mm thk shalitex board to fill and seal gaps in concrete acocommodating expansion and contraction of materials. with all labour and material complete job as per drawing specifications and direction of Engineer-in-Charge.