Conversion of SPT Bridges into RCC Cell Bridges No.1/1 on Patakata to Narayanpur road under SOPD-2021-22 in Kokrajhar District under Kokrajhar PWD, RR Division, Kokrajhar. (TN No.61_03)

Amount

2.2 Clearing and grubbing road land including uprooting wild vegetation, grass, buses, shrubs, saplings and troos of girth up to 300mm, removal of stumps of such trees cut carlier and disposal of unservicable materials and stacking of serviceable material to be used or auctioned, up to a lead of 1000m including removal and disposal of top organic soil not exceeding 250mm in thickness as per Technical Specification Clauses 201. (1) By Manual Means. (A) In area of non thomy jungle.

2.5 Dismantling of existing structures like culverts, bridges, retaining walls and other structure comprising of masonry, cement concrete, wood work, steel work, including T&P and scaffolding wherever necessary, sorting the dismantled material, disposal of unserviceable material and stacking the serviceable material with all lifts and lead of 1000 m as per Technical Specification Clause 202. I. By Manual Means (C) Reinforced Cement Concrete

16.64 Construction of temporary Bamboo bridge of 3.70m clear road way with Bholuka or Barua Bamboo post 5 nos. in each rows driven at least 180cm, below ground level and rows not more than 150 cm apart from center to center Bholuka or Barua Bamboo dham longtudinal groth both closelly placed and tied with half bamboo 90cm to 120cm apart in both layers and two layers of jati bamboo chattais (top layer should be diagonally woven), 70 mm to 100 mm thick brushwood in between chattais should be tied with half jati bamboo on both ends, bamboo railing with bholuka or barua bamboo post placed at 150cm apart jati or betua bamboo hand rails of two lines both side of every alternate rows. All tying must be done with cane or coir string and only mature bamboo should be used in work.

3.2 Scarifying Existing Bituminous Surface to a Depth of 150 mm by Mechanical Means Scarifying the existing bituminous road surface to a depth of 150 mm and disposal of scarified material with a lift upto 3.0m and lead upto 1000 m as per Technical Specification Clause 301.4.

3.4 Construction of embankment with approved materials deposited at site from roadway cutting and excavation from drain and foundation of other structures graded and compacted to meet requirement of Tables 300.1 and 300.2 as per Technical Specification Clause 301.5. (I) Private Land

3.14 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

4.1 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

4.7 WBM Grading 2 Using stone screening Type-B 11.2 mm for 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/binding materials 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

4.7 WBM Grading 3 Using stone screening Type-B 11.2 mm for 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/binding materials 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

5.1 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 i) Low porosity

5.2 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 bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503.

5.9 Providing, laying and rolling of open-graded premix carpet of 20 mm thickness composed of 13.2 mm to 5.6 mm aggregates either using penetration grade bitumen or emulsion to required line, grade and level to serve as wearing course on a previously prepared base, including mixing in a suitable plant, laying and rolling with a three wheel 80-100 kN static roller capacity, finished to required level and grades to be followed by seal coat of either Type A or Type B or Type C as per Technical Specification Clause 508. Case- I By Manual Means I) Bitumen (S-90)

5.12 Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using Type A, Type B and Type C as per Technical Specification Clause 510. A. By Manual Means Case - I : Type A I) Bitumen (S-90)

10.2 B Semi Reflective Traffic Signs Providing and fixing of semi reflective cautionary, mandatory and informatory sign board as per IRC:67 made of 1.5 mm thick MS Sheet duly stove white colour in front and gray colour on back with red reflective border of 65 mm width and required letters and figures with reflective tape engineering grade as per Clause 1701.3.9 of MORD for Rural Roads of required shade and colour supported and welded on 47mm x 47 mm x 12 SWG sheet tube firmly fixed to the ground by mean of properly designed foundations with M-15 grade cement concrete 450x450x600 mm, 600 mm below ground level as per approved drawing Clause 1701.2.2 ii) 600mm equilateral triangle

10.2 B Semi Reflective Traffic Signs Providing and fixing of semi reflective cautionary, mandatory and informatory sign board as per IRC:67 made of 1.5 mm thick MS Sheet duly stove white colour in front and gray colour on back with red reflective border of 65 mm width and required letters and figures with reflective tape engineering grade as per Clause 1701.3.9 of MORD for Rural Roads of required shade and colour supported and welded on 47mm x 47 mm x 12 SWG sheet tube firmly fixed to the ground by mean of properly designed foundations with M-15 grade cement concrete 450x450x600 mm, 600 mm below ground level as per approved drawing Clause 1701.2.2 iv) 800mm x 600mm rectangular

RCC BOX CELL BRIDGE OF SIZE : 5 cell X 4.00M X 4.00M 11.1 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 50 m, dressing of cum sides and bottom and backfilling in trenches with excavated suitable material. V. Marshy soil.

11.2 Fillling in foundation trenches as per drawing and tochnical specification Clause 305.3.9 I. Sand filling

11.4 Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 B. With natural gravel, III. PCC grade M 20, (i) Nominal mix 1:2:4.

11.4 Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203 B. With natural gravel IV. R.C.C grade M 20

11.8 Supplying. fitting and placing TMT (Fe-500 D) reinforcement bar (Other ISI approved TMT reinforcement bar (SAI/BISCON/THERMAX or equivalent) in foundation complete as per drawings and technical specifications Clauses 1000 and 1202.

12.5 Plain/reinforced cement concrete in substructure complete as per drawings and technical specification Clauses 802, 804, 805, 806, 807, 1202 and 1204 B. With Natural Gravel IV. R.C.C. grade M 25 (i) For height up to 5m

12.6 Supplying. fitting and placing TMT (Fe-500 D) reinforcement bar (From Primary Producer: TATA/SAIL/Esser Steel/ Jindall steel/Shyam steel/RINL) in foundation complete as per drawings and technical specifications Clauses 1000 and 1202.

12.9 Providing weepholes in brick manomry/stone mamony, plain/reinforced concrete abutment, wing wall, retum 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.

12.10 Backfilling behind abutment, wing wall and return wall complete as per drawings & tochnical specification Clause 1204.3.8 I. Granular material

13.5 Providing and laying cement concrete wearing course M 30 grade including reinforcement complete as per drawing and technical specifications Clauses 800 and 1206.3 A. With Crushed Stone

13.6 Construction of R.C.C. railing of M 25 grade in cast-in-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 and 1208.3.

13.10 Drainage Spouts complete as per drawing and Technical specification.

14.9 Providing and laying curtain walls complete as per drawing and technical specification Clause 1304 III.Cement concrete grade M 10

14.10 Flexible Apron Construction of flexible apron 1 m thick comprising of loose stone boulders weighing not less than 40 kg beyond curtain wall.

Marjit Basumatary

DHAN KUMAR BRAHMA