Repair and Rehabilitation of the existing major bridge at Km. 52/045 of NH-351G in the state of Gujarat on Item Rate Mode.

Clearing and grubbing road land including uprooting rank vegetation, grass bushes, shrubs, sapling and trees girth up to 300 mm removal of stumps of trees cut earlier and disposal of unserviceable materials (C) By mechanical means in area of light jungle.

Portable barricade in construction zone (Installation of a steel portable barricade with horizontal rail 300 mm wide, 2.5 m in length fitted on a 'A' frame made with 45 x 45 x 5 mm angle iron section,1.5m in height, horizontal rail painted (2coats) with yellow and white stripes, 150 mm in width at an angle of 450, 'A' frame painted with 2 coats of yellow paint, complete as per IRC:SP:55-2001 )

Diversion of water course, providing cofferdam and bund or island as may be necessary for foundation and maintaining the same for the period as may be necessary. (F) Abutment Left (including returns/ wing walls)

Scaffolding: - Providing, erecting and dismantling safe H frame and / pipe scaffolding including working platform for external area of bridge pier/ pier cap / girders to facilitate all works etc. completed, Measurement for payment shall be considered as per detailed specification. (Property of contractor, and repetitions will be paid per pier / span) (for Every 1 m extra height, increase the rate by 50 rupees/ meter height) A) up to 7.0 mt.

Excavation in ordinary rock by manual means (Excavation in ordinary rock using manual means including loading in a truck and carrying of excavated material to embankment site with in all lifts and leads upto 1000 metres)

Removal of damaged concrete: - Removal of existing concrete along with loose damaged and cracked concrete / cover concrete at all specified locations up to beyond the corroded steel reinforcements by chipping / hacking with chisel and hammer or by mechanical means like chisel hammer, pneumatic chippers including scaffolding, high pressure water jetting to chipped concrete and reinforcement and removal and disposal of debris within owner’s premises incl. all plant & machineries. Hard concrete shall not be removed. However, if the rebar is corroded, concrete around it shall be removed. Depth of chipping will vary from 100 to 120 mm including spalled thickness complete with labour, tools, machinery etc. all. as directed by Engineer-in-charge. The edges of the repair locations should be saw cut to a depth of at least 10 mm to avoid feather edging and to provide a square edge. Removal of dust, loose particles, algae growth etc. from concrete surface manually by wire brush, mechanically or any other means to obtain a sound surface over areas other than above.

Rust Removal & Steel Protection:- Cleaning as directed & specified all corrosion / rust / scales from reinforcement bars using rust remover Reebakleens RR of Fosroc make or Rust clean of BASF or equivalent material of approved makes leaving to dry for 30 mins & washing surface with fresh water as required to exposed reinforcement bars complete as specified also providing & applying inhibition coats/system to exposed reinforcement bars after drying & also new bars after cleaning & removing scales and rust completely as specified. Two component inhibitors Concresive ZRI equivalent material of BASF make as approved by engineer shall be used as per manufacturers specification in two coats including all labour tools tackles, necessary surface preparation & necessary protection after & during repair work.

Epoxy bonding agent of new concrete to old concrete. The applied bond agent should possess min properties as below: Shear Strength - @ 7 days 20N/mm2 Flexural Strength - @ 7 days 35 N/mm2 Compressive Strength - @ 7 days 50N/mm2 (The new repair mortar/concrete should be applied within overlay time of epoxy bonding agent mentioned as per manufacturer's datasheets)

Providing and casting in situ-controlled Cement concrete M-30 for Jacketing of Pile as per drawings including centering shuttering, scaffolding where necessary, laying vibrating, curing and finishing complete. (B) Height from 0.0 to 5.0 M. (As per R&B Design Circle Approved List of Repair Items Item No. 11)

Providing and placing in position Fe500D TMT bar reinforcement including cutting, bending, hooking, and tying complete as per detailed drawing for all structural components as per repair methodology and as directed by engineer in charge.