Rehabilitation of Bridge no.2/1 on Butikur to Ghuguha Road under SOPD (G)

Amount

Embankment Construction with Material Obtained from Borrow Pits (Construction of embankment with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacting to meet requirment of table 300-2 ( Including cost of testing of materials at site and laboratory as directed by the deptt.) (a) from private land

Gabian Structure for Erosion Control, River Training Works and Protection works (Providing and constructing gabain structures for erosion control, river training works and protection works with wire crates of size 2 m x 1 m x 0.3 m each divided into 1m compartments by cross netting, made from 4 mm galvanised steel wire@ 32Kgs per 10Sqm having minimum tensil strength of 300Mpa conforming to IS:280 and galvanizing coating conforming to IS:4826, woven into meshes with double twist, mesh size not exceeding to 100mmX100mm , firred with boulders at least dimension of 200mm , all loose ends to be tied with 4mm galvenized steel wire.)

Chipping of deteriorated concrete and removal of all loose & friable materials and fully exposing rusted reinforcement followed by proper cleaning and removing of rusts and other foreign materials using sand blasting/ emery cloths/ wire brush etc. including formwork as directed and specified by the department complete

Replacement of corroded reinforcement by cutting and welding new reinforcement of minimum 25mm dia. including lapping on both sides to the specified length as directed and as per relevant IS/IRC codes and cost of gas ,welding rods,higher charge of welding machines etc. including formwork as required.(Reinforcement to be measured and paid seperately)

Supplying and applying two coats of Zinc rich anti-corrosive protective coating with'Techguard 102' of Choksey Chemicals or euivalent @ 0.50 Lit per Sqm over thoroughly cleaned and prepared steel bars including formwork as directed and specified by the department complete.

Supplying and applying Epoxy based bonding agent Masterbond EP of Choksey Chemicals or euivalent @ 0.50 Lit pe sqm after totally saturating the cleaned concrete surface with clean water for proper bonding of old and new concrete including formwork as specified and directed by the department complete.

Patching of damaged concrete surface with polymer concrete and curing compounds, initiator and promoter, available in present formulations, to be applied as per instructions of manufacturer and as approved by the Engineer.

Applying and placing Antiwash, non-shrink, cementatious, high strength Renderoc UW of Fosroc Chemicals or equivalent by mixing with clean water to repair the damaged and deteriorated underwater structural elements including formwork as per the department's instructions with labour, tools complete as specified and directed by the department including formwork.

Repair of joint Grooves with Epoxy Mortar Repair of spalled joint grooves of contraction joints, longitudinal joints and expansion joints in concrete pavements using epoxy mortar or epoxy concrete)

Providing & fixing 16mm dia MS nozzles in a grid of 1m c/c up to the half of the thickness of the concrete structure.A grout slurry of neat cement & chloride free expanding grout Mastergrout CPG-1 of Choksey Chemicals or equivalent @ 0.5% by weight of cement water cement ratio 0.35 to 0.40 and viscosity not more than 1.02 centipoise with grouting pressure till the refusal of injection grout Mastergrout CPG-1. The grouting operation pressure shall be 2Kg/sq.cm.Cutting the exposed nozzle after the grouting with a good cutter to make the surface free from the grouting pipes and to seal the gap with plugging compound Masterplug of Choksey Chemicals as per the specification and the direction of the department complete including formwork.

Providing and inserting nipples with approved fixing compound after drilling holes for grouting as per Technical specifications including subsequent cutting/removal and sealing of the hole as necessary of nipples after completion of grouting with Cement/Epoxy.

Sealing of crack / porous concrete with Epoxy Grout by injection through nipples complete as per clause 2803.1.

Providing, placing and fixing in position Chemical rebar fastners (of M/s Hilti or M/s Sika or approved equivalent conforming to Europian standard CSTB/ETA and Civil Aid standard) of vaious diameters in Piers, Pier caps, including drilling holes of specified size and depth, cleaning holes, placing chemicals inside the holes and fixing reinforcing bars as per specifications of the chemical rebar supplier, and under supervision of the authorized representative of the supplier and conducting pull-out test of atleast 5% of total nos. of chemical re-ba fastners (cost of reinforcing bars to be paid seperately) all complete as per specification as directed byb the department. a) 12 mm dia re-bar fastners.

Providing, placing and fixing in position Chemical rebar fastners (of M/s Hilti or M/s Sika or approved equivalent conforming to Europian standard CSTB/ETA and Civil Aid standard) of vaious diameters in Piers, Pier caps, including drilling holes of specified size and depth, cleaning holes, placing chemicals inside the holes and fixing reinforcing bars as per specifications of the chemical rebar supplier, and under supervision of the authorized representative of the supplier and conducting pull-out test of atleast 5% of total nos. of chemical re-ba fastners (cost of reinforcing bars to be paid seperately) all complete as per specification as directed byb the department. b) 16 mm dia re-bar fastners.

Greasing of Bearing with ULTRATACK AP3 grease including cleaeing of bearings with steel brush, removal of dusts and dirt with necessary scaffolding etc. complete as directed by the department.

Fabrication and fixing of steel pedestal support for bearing

Providing and fixing of Steel plates for placing of bearings

Labour for Lifting of superstructure span by jacking up from below i.e. by placing the jacks on pier/abutment caps for span length of 30m. (Cost of bearing to be paid extra) (Rectification of Bearings as per Technical Specifications) A. Lifting from the pier cap

Supplying, fitting and fixing in position true to line and level elastomeric bearing conforming centimetre to IRC: 83 (Part-II) section IX and clause 2005 of MoRTH specifications complete includinall accessories as per drawing and Technical Specifications.

Labour for replacement of Bearings complete as per Technical Specification (Cost of bearing to be paid extra)

Supplying, fitting and placing TMT IS:1786 (Fe 500) bar reinforcement in sub-structure complete as per drawing and technical specifications (b) TMT-IS 1786 ( Fe-500 D) Secondary Producer (ISI approved)

Burried Joint (Providing and laying a burried expansion joint, expansion gap being 20 mm, covered with 12 mm thick, 200 mm wide galvanised wieldable structural steel plate as per IS: 2062, placed symmetrical to centre line of the joint, resting freely over the top surfaces of the deck concrete, welding of 8mm dia, 100mm long galvanized nails spaced 300mm C/C along the center line of the plate, all as specified in clause 2604.)

Boulder apron laid in wire crates (Providing and laying of boulder apron laid in wire crates made with 4mm dia GI wire conforming to IS:280 & IS:4826 in 100mm x 100mm mesh (weaved diagonally) including 10% extra for laps and joints laid with stone boulders weighting not less than 40Kg each.)

Competent Infrastructure and consulting(CICON) Pvt.Ltd

Shree Gautam Construction Co Ltd