RIDF-XXVII/ Karbi Anglong/02 Construction of RCC Bridge No.17/3 Over River Dilangtha on Dhansiri Kherbari Missaibailum under RIDF-XXVII of NABARD for the year 2021-22

Amount

Labour for taking out old piles of timber bridge with necessary scaffolding, jati bamboos, jumper ropes etc, complete and stacking them at suitable places as directed.

Labour for dismantling all members of the timber bridge (excluding piles) with necessary scaffolding, jati bamboos, jumper ropes etc, complete and stacking them at 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 overall width of 3.70m and clear road way 3m with jungle wood post 20cm to 25cm dia 5nos. In each rows and rows being 2.1m. apart except for the navigable span which should be 3m. Post to be driven at least 180cm. or more below ground level including providing 20cm to 25cm center to center and placed over 20 cm dia, jungle wood dham, 15cm dia. jungle wood bracing collar fixed by bolts and nuts, straps etc. mature bholuka Bamboo cross groth all closely packed and tied 75cm wide track way made from 38mm thick 1st class local plank fixed on 75mmx100mm first class local wood battens 120cm apart and 3 lines of jati bamboo horizantal railing fixed in bholuka bamboo post placed at 210cm apart and white washed including all necessary nuts and bolts, coir ropes, struts, nails etc. complete with a layer of brushwood to exposed portion out-side trackway with earth topping complete as per direction of the department.

Excavation for Structures (Earth work in excavation of foundation of structures as per drawing and technical specification, including setting out, construction of shoring and bracing, removal of stumps and other deleterious matter, dressing of sides and bottom and backfilling with approved material. (I) Ordinary soil (A) Manual Means (a) Without dewatering (i) upto 3 m depth

Bored cast-in-situ M35 grade R.C.C. pile excluding reinforcement complete as per drawing and technical specifications and removal of excavated earth with all lifts and lead upto 1000 m. (A) Without Plasticiser (Pile diameter 1000mm)

Pile load test on single vertical pile in accordance with IS:2911(Part-IV). a) Initial and Routine load test.

Leveling course for Pile cap , M15 grade

Cement concrete for reinforced concrete in pile cap complete as per drawing and Technical Specification (I) Without Plasticiser (B) RCC M25 (i) Using Concrete Mixer

Reinforcement in Foundation: Supplying, fitting and placing TMT IS:1786 Fe500 D bar reinforcement in foundation complete as per drawing and technical specifications . (b) TMT-IS 1786 ( Fe-500 D) Secondary Producer (ISI approved)

Plain/Reinforced cement concrete, in sub & 2200 structure complete as per drawing and technical specification and steel shuttering formwork (I) Without plasticiser (F) RCC Grade M25 (a) Height upto 5m Case I: Using concrete Mixer

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)

Back filling behind abutment, wing wall and return wall complete as per drawing and Technical specification (A) Granular material

Supplying, fitting and fixing in position true to line and level elastomeric bearing conforming to IRC:83 (part-II) section IX and clause 2005 of MoRTH specifications complete inclding all accessories as perdrawing and technical specification

Furnishing and Placing Reinforced/ Prestressed cement concrete in super-structure as per drawing and Technical Specification' including steel shuttering formwork. (I) Without Plasticiser (B) RCC Grade M25, Case I Using Concrete Mixer (ii) For T-beam & slab (b) Height 5m to 10m

Reinforcement in Super Structure: Supplying, fitting and placing TMT conforming to IS:1786 Fe 500 D reinforcement in super-structure including splicing complete as per drawing and technical specifications (b) TMT-IS 1786 ( Fe-500 D) Secondary Producer (ISI approved)

Providing and laying Cement concrete wearing coat M-30 grade including reinforcement complete as per drawing and Technical Specifications

Construction of precast RCC railing of M30 Grade, aggregate size not exceeding 12 mm, true to line and grade, tolurence of vertical RCC post not to exceed 1 in 500, centre to centre spacing between vertical post not to exceed 2000 mm, leaving adequat space between vertical posts for expansion, complete as per approved drawings and technical specifications.

Drainage Spouts complete as per drawing and technical specifications

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) 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).

Protection Work: 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

Providing and lying filter material underneath pitching in slopes as per drawing and technical specifications.

Providing and laying Pitching on slopes laid over prepared filter media including boulder apron laid dry in front of toe of embankment complete as per drawing and Technical specifications, Stone/Boulder

Clearing and Grubbing Road Land .(Clearing and grubbing road land including uprooting rank vegetation, grass, bushes, shrubs, saplings and trees girth up to 300 mm, removal of stumps of trees cut earlier and disposal of unserviceable materials and stacking of serviceable materials to beused or auctioned up to lead of 1000metres including removal and disposal of top organic soil not exceeding 150mm thickness. (ii) By Mechanical Means A. In area of light jungle

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

Construction of Subgrade and Earthen Shoulders (Construction of subgrade and earthen shoulders with approved material obtained from borrow pits with all lifts & leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of table (300-2) (a), ( Including cost of testing of materials at site and laboratory as directed by the deptt.) '(a) from private land

Granular Sub-Base with Coarse Graded Material ( Table:- 400- 2) (Construction of granular sub-base by providing coarse 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 vibratory roller to achieve the desired density,complete as per cl. 401(including carriage of material from quarry to site of work with all lead and lift and payment of FR ,VAT etc complete and as directed by the Department) (i) For grading - I Material

Water Bound Macadam (Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/binding material to fillup the interstices of coarse aggregate,watering and compacting to the reqd. density (including carriage of material from quarry to site of work with all lead and lift and payment of FR ,VAT etc complete and as directed by the Department) (III) Grading - III (c) Using Screening Type - B (11.2 mm Agg)

Water Bound Macadam (Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with vibratory roller 8-10 tonnes in stages to proper grade and camber, applying and brooming requisite type of screening/binding material to fillup the interstices of coarse aggregate,watering and compacting to the reqd. density ((including carriage of material from quarry to site of work with all lead and lift and payment of FR ,VAT etc complete and as directed by the Department) (II) Grading - II (b) Using Screening Type - B (11.2 mm Agg.)

Prime coat (Providing and applying primer coat with bitumen emulsion on prepared surface of granular Base including clearing of road surface and spraying primer at the rate of 0.60 kg/sqm using mechanical means.)( Including cost of testing of materials at site and laboratory as directed by the deptt.) '(i) With bitumen emulsion-CSS-1h

Providing and applying tack coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.20 kg per sqm on the prepared bituminous/granular surface cleaned with mechanical broom.( Including cost of testing of materials at site and laboratory as directed by the deptt.) (I) With Bitumin emulsion CSS - 1h (a) Normal bituminous surface

Open - Graded Premix Surfacing (Providing, laying and rolling of open - graded premix surfacing of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using penetration grade bitumen to required line, grade and level to serve as wearingcoarse on a previously prepared base, including mixing in a suitable plant laying and rolling with a smooth wheeled roller 8-10 T capacity to yhe reqd. level and grade. ((including carriage of material from quarry to site of work with all lead and lift and payment of FR ,VAT etc complete and as directed by the Department)( Including cost of testing of materials at site and laboratory as directed by the deptt.) A. Without anti stripping agent (iv) Open-Graded Premix Surfacing using cold mix Binder (as per IRC : SP : 100 : 2014 cationic Bitumen Emulsion CMS)

Seal Coat (Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A and B seal coats) (including carriage of material from quarry to site of work with all lead and lift and payment of FR ,VAT etc complete and as directed by the Department) ( Including cost of testing of materials at site and laboratory as directed by the deptt.) '(a) Without anti stripping agent (i) 'Case - I : Type A (Providing and laying liquid seal coat comprising of a layer of bituminous binder ( paving bitumen 60/70 or VG-30 grade, followed by a cover of crushed stone chipping of specified grade.

Guard Post: Supplying, fitting and fixing RCC guard post 150cm long erected 75cm above the ground and 75cm below the ground with M-15 grade (nominal mix 1:2:4 with broken stone aggregate up to 20mm size) of cement concrete and required reinforcement tied in position with annealed black wire including centering, moulding the top, curing including painting concrete surfaces in 23cm strips upto 0.75m from the top alternately in black and white and having 2 nos. reflective band of desired shade etc. complete as per design and as directed. '(b) 15 cm dia. RCC guard post with reinforcement of 4nos. 12mm dia TMT main steel bars and 6mm TMT/ MS stirrups at 15cm c/c.

Carrying out Sub Soil investigation (SSI) for all type of soil (except boring in rock) upto depthof 30 m or refusal (N=100) for each foundation location as per IRC 78-2014 and submission of SSI report to the Engineer in charge for approval . Preparation & submission of Design calculation & Drawings of foundation , sub structure,Super structure as relevant IRC Codes and SSI Report , 2( two) each of Design& Drawing of each bridge to be submitted for approval and 8 ( eight)copies after approval of competent authority. including providing and erecting informatory sign board as per norms of NABARD

Sri Girin Chutia

Rajib Sahu