Construction of RCC Box Cell Bridge at Tharaibari from Charaikhala-Harinaguri Road to Khakraigwlao village under IBA (Infrastructure Development Project) for the year 2025-26. TN_100_03

Clearing and grubbing road land including uprooting wild vegetation, grass, bushes, shrubs, saplings and trees of girth up to 300 mm, removal of stumps of such treescut earlier and disposal of unserviceable materials and stacking of serviceable material to be used or auctioned, upto a lead of 1000m including removal and disposal of top organic soil not exceeding 150 mm in thickness as per Technical Specification Clause 201. A) In area of non thorny jungle

Labour for dismantling all members of the timber bridge (excluding piles) with necessary scaffolding, jati bamboos, jumper ropesetc, complete and stacking the mat suitable places as directed (all members will be under custody of the contractor till taken over by the department)

Construction of cold weather Bamboo bridge over all width of 3.70 m and clear roadway 3m with jungle wood post 20 cm to 25 cm dia 5 nos. In each row sand rows being 2.1 m. apart except for the navigable span which should be 3m. Post to be driven at least 180 cm. or more below ground level including providing 20 cm to 25 cm center to center and placed over 20 cmdia, jungle wood dham, 15 cm dia. jungle wood bracing collar fixed by bolts and nuts, straps etc. mature bholuka Bamboo cross groth all closely packed and tied 75 cm wide track way made from 38 mm thick 1st class local plank fixed on 75mm x 100mm first class local wood battens 120 cm apart and 3 linesof jati bamboo horizantal railing fixed in bholuka bamboo post placedat 210cm apart and white washed including all necessary nuts and bolts, coir ropes, struts, nailsetc.complete with a layer of brush wood to exposed portion out-side track way with earth topping complete as per direction of the department.

Construction of embankment with approved material obtained from borrow pits with a lift upto1.5m, transporting to site, spreading, grading to required slope and compacting to meet requirement of Tables 300.1 and 300.2 with a lead upto p g q p 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 Technical Specification Clause 401. (ii) For grading II Material

Providing, laying, spreading and compacting stone aggregates of specificsizes to water bound macadam specification including spreading in uniform thickness, handpacking, rolling with smooth wheel roller 80-100kN 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

Providing and laying interlocking concrete block pavement with M40 grade of concrete blocks having thickness 80mm as per technical specification clause 1504 complete including carriage :: (a) Including Edge block/ Edge Restraints

Providing and fixing of typical PMGSY informatory sign board with Logo as per MORD specifications and drawing.Three MS Plates of 1.6 mm thick, top and middle plate duly welded with MS flat iron 25 mm x 5m size on back on edges. The lower plate will be welded with MS angle iron frameof 25 mm x 25 mm x 5mm. The angle iron frame of the lower most plate and flat iron frame of middle plate will be welded to 2 nos.75 mm x 75 mm of 12 SWG sheet tubes postsduly embedded in cement concrete M-15 grade blocks of 450 mm x 450 mm x 600mm, 600 mm below groundlevel. The top most diamond plate will be welded to middle plate by 47 mm x 47 mm of 12 SWG steel plate tube. AllM.S. will bestove enameled on both sides. Lettering and printing arrows, border etc. will be painted with ready mixed synthetic enamel paint of superior quality in required shade and colour. All sections of framed posts and steel tube will be painted with primer and two coats of epoxy paint as per drawing Clause 1701 and Annexure 1700.1

Construction of RCC Box Cell Culvert (Foot Bridge) :- 3 cells [4.00 x 4.00]m Earthwork in excavation for structures as per drawing and technical specifications Clauses 305.1 including setting out, construction of shoring an bracing, removal off stumps and other deleterious material and disposal upto a lead of 50 m, dressing of sides and bottom and backfilling in trenches with excavated suitable material. V. Marshy soil

Filling in foundation trenches as per drawing and technical specification clause 305.3.9 :: I. Sand Filling

Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications clause 802, 1202 & 1203 :: (B) Natural Gravel

Providing pressure releif pipes 100 mm dia in bottom slab off box cell on a filter media base 500mm X 500 mm as per drawing and technical specification Clauses 1205.5.7

Plain// Reinforced cement concrete in substructure complete as per drawings and technical specififcation clauses 802, 804, 805, 806, 8077, 1202 and 12044 :: B. Narural Gravel

Providing and laying reinforced cement concrete in superstructure as per drawing and technical specifications clauses 800, 1205.4 and 1205.5 (B) Natural Gravel I. RCC Grade M20

Supplying, fitting and placing MS Bar (Fe-500 D) reinforcement bar (From Primary Producer: TATA/SAIL/Esser Steel/Jindal Steel/Shyam Steel/RINL) in substructure complete as per drawings and technical specifications clauses 1002,1005, 1010 & 1202

Supplying, fitting and placing MS Bar (Fe-500 D) reinforcement bar (From Primary Producer: TATA/SAIL/Esser Steel/Jindal Steel/Shyam Steel/RINL) in superstructure complete as per drawings and technical specifications clauses 1002, 1010 & 1202

Construction of R.C.C railing of M 25 grade in castin-situ with 20 mm nominal size aggregate, true to line and grade, tolerance of vertical railing post not to exceed 1 in 500, centre-to-centre spacing between vertical posts not to exceed 2000 mm as per drawing and technical specifications clauses 800, 900, 1208.3

Provididng and laying cement concrete wearing course M 30 grade including reinforcement complete as per drawing and technical specifications clauses 800 and 1206.3 :: B. With Natural Gravel

Provididng weepholes in brick masonry/stone masonry, plain//reinforced concrete abutment, wing wall, return wall with 100 mm dia AC pipe extending through the full width of the structures with slope of 1(V):20(H) towards drawing face complete as per drawing and technical specification clauses 614, 709, 1204.3.7

Drainage spouts complete as per drawing and technical specifications clause 1209

Backfilling behind abutment, wing wall and return wall complete as per drawing and technical specification clause 1204.3.8 II. Sandy material

Construction of flexible apron 1 m thick comprising of loose stone boulders weighing not less then 25 kg beyond curtain wall

Providing and laying of boulder apron laid in wire crates with 4 mm dia GI wire conforming to IS:280 and IS:4826 in 100 mm x 100 mm mesh (woven diagonally) including 10 percent extra for laps and joints laid with stone boulders weighing not less than 25 kg each as per drawing and technical specifications Clause 1301

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 :: (i) Stone/Boulder