STBR/SOPD-G/Lakhipur-01 Repair and Rehabilitation of RCC Bridge No. 1/1 over river Chiri on NH37 at Palorbond to Lakhipur under SOPD-G for the year 2024-25 under PWRD Lakhipur Civil Sub-Division Territorial Road Division

Amount

Earthwork in excavation for structures as per drawing and technical specifications Clause 305.1 including setting out,construction of shoring and bracing, removal of stumps and other deleterious material and disposal upto a lead of 50m,dressing of sides and bottom and backfilling in trenches with excavated suitable material.I. Ordinary soil (i) Upto 3 m depth

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.)

Providing and laying filter material underneath pitching in slopes complete as per drawing and technical specifications Clause 1302

Providing and laying pitching on slopes laid over prepared filter media as per drawing and technical specifications Clause 1302 Stone/Boulder

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

Supplying and applying two coats of Zinc rich anti-corrosive protective coating with "Nitozinc primer" of Fosroc or euivalent @ 0.20 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.

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.

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) B. Lifting with auxilary structure upto 6 m Height including dismentling the same

Supplying, fitting and fixing in position true to line and level forged steel roller bearing conforming to IRC: 83(Pt.-1) section IX and clause 2003 of MoRTH specifications complete including all 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)

Strip Seal Expansion Joint (Providing and laying of a strip seal expansion joint catering to maximum horizontal movement upto 70 mm, complete as per approved drawings and standard specifications to be installed by the manufacturer/supplier or their authorised representative ensuring compliance to the manufacturer’s instruction for installation).

PCC M15 Grade leveling course below approach slab complete as per drawing and Technical specification

Reinforced cement concrete approach slab including reinforcement and formwork complete as per drawing and Technical specification b) (i) TMT -IS 1768 Fe 500 D Secondary Producer ISI Approved

Providing Hanging Platform madeup of RSJ and timber/PlyBoard etc. complete in all respect as specified or as directed by the engineer-in charge.

Providing and constructing temporary island for construction of pile foundation with depth of water upto 4.0m complete as per technical specification.

Construction of embankment with approved material obtained from borrow pits with a lift upto 1.5 m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto 1000 m as per Technical Specification Clause 301.5 (I) Private Land

Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts and leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of Table 300.2 with lead upto 1000 m as per Technical Specification Clause 303.1. (i) Private Land

Construction of granular sub-base by providing well graded material, spreading in uniform layers with motor grader on prepared surface, mixing by mix in place method with rotavator at OMC and compacting with smooth wheel roller to achieve the desired density, complete as per Clause 401. II) For Grading II Material

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 kN in stages to proper grade and camber, applying and brooming, stone screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 2 as per Technical Specification Clause 405. (A) By manual means. 2) Grading No. 2 : Using stone screening Gr-II

Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 kN in stages to proper grade and camber, applying and brooming, stone screening to fill-up the interstices of coarse aggregate, watering and compacting to the required density Grading 3 as per Technical Specification Clause 405. (A) By manual means. 3) Grading No. 3 : Using stone screening Gr-III

Providing and applying primer coat with bitumen emulsion (SS-1) on prepared surface of granular base including cleaning of road surface and spraying primer at the rate of 0.70-1.0 kg/sqm using mechanical means as per Technical Specification Clause 502

Providing and applying tack coat with Bitumen emulsion (RS-1) using emulsion distributor at the rate of 0.25 to 0.30 kg per sqm on the prepared dry and hungry bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503.

Providing and laying bituminous macadam with hot mix plant using crushed aggregates of grading as per Table 500.4 premixed with bituminous binder, transported to site upto a lead of 1000m laid over a previously prepared surface with paver finisher to the required grade, level and alignment and rolled to achieve the desired compaction as per Technical Specification Clause 504.

Bituminous Concrete (Providing and laying bituminous concrete with 100-120 TPH batch type hot mix plant producing an average output of 75 tonnes per hour using crushed aggregates of specified grading, premixed with bituminous binder @ 5.4 to 5.6 % of mix and filler transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the reqd. grade, lavel and alignment,rolling with smooth wheeled,vibratory and tandem rollers to achieve the desired compaction as per MoSRT&H cl. no.509. complete in all respect. ( including carriage up to initial lead of 5.0 km from quarry and carriage of mixed materials up to 10.0 Km initial lead from mixing plant ) as per MORT&H specification 509 With PMB 70 Grade paved bitumen. Hydrated lime / cement as filler with antistripping agent for grading-II (13 mm nominal size)

DEBOPRIYO DEB (BID ID -252240)