Construction of RCC Box Culvert at Jwimaguri to Chandrapur road under Haltugaon VCDC under SOPD PWD for the year 2023-24 of Kokrajhar District. TN No.64_08

Amount

A. EARTH WORK 3.4 (i) 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

3.14 (i) 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 compacting to meet requirement of Table 300.2 with lead upto 1000 m as per Technical Specification Clause 303.1. (i) Private Land

B. BASE AND SUB-BASE COURSES (NON BITUMINOUS) 4.1 (A) 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

Water Bound Macadam 4.7 (2) 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 (with an initial lead of 5.0 km) as per Technical Specification Clause 405. (A) By Manual Means II) Grading II b) Using Screening Type-B (11.2mm Agg.)

Water Bound Macadam 4.7 (3) 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 II) Grading II b) Using Screening Type-B (11.2mm Agg.)

C. SURFACE COURSE (PC & sc) PRIME COAT 5.1 (i) 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

TACK COAT 5.2 (i) (a) (c) 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 hungri 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 basse, 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 by seal coat of either Type A or Type B or Type C as per Technical Specification Clause 508.2 Case-I By manual Means. (i) Bitumen S-90

5.12 (A) Providing and laying seal coat sealing the voids in a bituminous surface laid t 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 (11.2mm to 2.36mm) (i) Bitumen (S-90)

D. Sign Board & Traffic Sign 10.16 Providing and erecting direction and place identification retro-reflectorised sign as per IRC:67 made of encapsulated lens type reflective sheeting vide Clause 1701.2.3, fixed over aluminium sheeting, 2mm thick with area not exceeding 0.9 sqm supported on a mild steel single angle iron post 75 x 75 x6 mm firmly fixed to the ground by means of properly designed foundation with M-15 grade cement concrete 450 x 450 x 600 mm, 600 mm below ground level as per approved drawing and Technical Specification Clause 1701.

10.2 Providing and fixing of retro-reflectorised cautionary, mandatory and informatory sign as per IRC:67 made of encapsulated lens type reflective sheeting vide Clause 1701.2.3 fixed over aluminium sheeting, 1.5 mm thick supported on a mild steel angle iron post 75 mm x 75 mm x 6 mm firmly fixed to the ground by means of properly designed foundation with M15 grade cement concrete 450 mm x 450 mm x 600 mm, 600 mm below ground level as per drawings and Technical Specification Clause 801 (ii) 6 cm equilateral triangle

(ii) 60 cm circular

E. PLANTATION OF TREES & CD WORKS 16.80 Planting of Trees and their maintenance for three years (Planting of trees by the road side (Avenue trees) in 0.60 m dia holes, 1 m deep dug in the ground, mixing the soil with decayed farm yard/ sludge manure, planting the saplings, backfilling the trenches, watering, fixing the tree guard and maintaining the plants for three years.

Construction of RCC Box Bridge for opening : 2 Cell, size: 4.00m x 4.00m 11.1 Earthwork in excavation of foundation for structures as per drawing and technical specification Clause 305.1 includding setting out, construction of shoring and bracing, removal of stumps and other deleterious material and disposal upto a lead of 50 m, dressing of sides and bottom and back filling in tranches with excavated suitable material. I. Ordinary soil

11.2 Sand Fillling in foundation trenches as per drawing and technical 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. A. With Crushed Stone: i). P.C.C Grade M10 (i) Nominal mix (1:3:6)

11.4 Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203. A. With Crushed Stone: iii). P.C.C Grade M20 (i) Nominal mix (1:2:4)

12.5 Plain/reinforced cement concrete in substructure complete as per drawings and technical specification Clauses 802, 804, 805, 806, 807, 1202 ans 1204 A. With Crushed Stone IV. RCC Grade M 25 i) For height upto 5 m

13.1 Providing & Laying Reinforced Cement Concrete in superstructure complete as per drawing and technical specification Clause 800, 1205.4 & 1205.5 A. With Crushed Stone iv) RCC Grade M25 (a) Height up to 5m

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

12.7 Supplying, fitting and placing TMT (Fe-500 D) reinforcement bar (From primary Producer: TATA/SAIL/Eser Steel/Jindal Steel/Shyam Steel/RINL)) in substructrue complete as per drawings and technical specification Clauses 1002, 1005, 1010 & 1202

13.2 Supplying, fitting and placing TMT (Fe-500 D) reinforcement bar (From primary Producer: TATA/SAIL/Eser Steel/Jindal Steel/Shyam Steel/RINL)) in super structrue complete as per drawings and technical specification Clauses 1002, 1010 & 1202

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

12.9 Providing 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 force 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 & technical specification Clause 1204.3.8 A. Granular material

14.9 Providing and laying curtain walls complete as per drawing and technical specification Clause 1304 (iii) Cement concrete grade M 10

13.10 Drainage spouts complete as per drawing and technical specifications Clause 1209

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

13.11 P.C.C. M15 ordinary grade (1:2.5:5) levelling course below approach slab complete as per drawing and technical specifications clauses 800 and 1211. (A) With crushed stone (i) Nominal Mix (1:2.5:5)

13.12(A) Reinforced Cement Concrete M25 grade approach slab including reinforcement and formwork complete as per drawing and technical specification clauses 800 and 1211 etc. (A) With Crushed stoone

10.5 Painting two coats including primer coat after filling the surface with synthetic enamel paint I all shades on new, plastered/ concrete surfaces as per drawing and technical specification clause 1701.

16.28(a) Supplying, fitting and fixing RCC guard post 150 cm long erected 75 cm above the ground and 75cm below the ground with m-15 grade (nominal mix 1:2:4 with broken stone aggregate upto 20mm size) of cement concrete and required reinforcement tie4d in position with annealed black wire inclueing centering, moulding the top, curing including painting concrete surfaces in 23 cm strips upto 0.75m from the top alternately in black and white and having 2 nos. reflective band of desired shate etc. complete as epr design and as directed. a) 30 cm dia RCC guard post with reinforcement of 6 nos. 12mm dia TMT steel bars and 6mm TMT/MS stirrups at 15cm c/c.

16.71 Consttruction 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 centre to centre bholuka or barua bamboo dham longitudinal groth both closely places and tied with half bamboo 90 cm to 120cm apart in both layers and two layers of jati bamboo chattais (top layer should be diagonally woven), 70 mm to 100mm thick brushwood in between chattais shuld be tied with half jati bamboo on both ends, bamboo railing with bholuka or barua bamboo post placed at 150 cm apart jati or betua bamboo hand railsj of two lines both side of every alternate rows. All tying must be done with care or coir string and only mature bamboo should be used in work.

DHANANJAY BASUMATARY