Restoration of Flood damage Boshabil to Balagaon Road

Amount

(A) Road Work: Construction of embankment with approved material obtained from borrow pits with a lift upto 1.50 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 shoulder 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 300.1. (i) Private land

Furnishing and laying of the live sods of perennial turf forming grass on embankment slope, verges or other locations shown on the drawing or as directed by the Engineer including preparation of ground, stacking the sods and watering as per Clause 309.

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

(B) CD Work: RCC Box Cell Bridge, Size=2.00m x 2.00m, 1 Cell, 1 No. Earth work in excavation for structures as per drawings and technical specifications Clause 305.1 including setting out, construction of shoring and bracing, removal of stumps and other deleterious material and disposal up to a lead of 50m, dressing of sides and bottom and backfilling in trenches with excavated suitable material. 1. Ordinary Soil

Fillling in foundation trenches as per drawing and technical specification clause 305.3.9 i) Sand filling

Providing concrete for plain/reinforced concrete in open foundation complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203. B. With Natural Gravel i) P.C.C Grade M10, (i) Nominal mix 1:3:6

Providing concrete for plain/reinforced concrete in open foundation complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203. B. With Natural Gravel iv) P.C.C Grade M-20,

Providing concrete for plain/reinforced concrete in open foundation complete as per drawings and technical specifications Clause 802, 803, 1202 & 1203. B. With Natural Gravel iii) P.C.C Grade M-20, (i) Nominal mix 1:2:4

Plain/Reinforced cement concrete in sub-structure complete as per drawing and technical specification Clauses 802, 804, 805, 806, 807, 1202 ans 1204. B. With Natural Gravel (iv) RCC GRADE M 25 (i) Heigth up to 5m

Supplying, fitting and placing TMT (Fe-500 D) reinforcement bar (From Primary Producer: TATA/SAIL/Esser Steel/Jindal Steel/Shyam Steel/RINL) in foundation complete as per drawings and technical specification Clauses 1000 & 1202

Supplying, fitting and placing TMT (Fe-500 D) reinforcement bar (other ISI approved TMT reinforcement bar (SAI/BISCON/THERMAX or equivalent) in sub structrue complete as per drawings and technical specification Clauses 1002, 1005, 1010 & 1202

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 face complete as per drawing and technical specification Clause 614, 709, 1204.3.7.

Backfilling behind abutment, wing wall and return wall complete as per drawings & technical specification Clause 1204.3.8 A. Granular Materials

Providing & laying Reinforced cement concrete in superstructure as per drawing and technical specifications Clauses 800, 1205.4 and 1205.5 B. With Natural Gravel ii) R.C.C M-25 a) Height upto 5M

Supplying, fitting and placing TMT (Fe-500 D) reinforcement bar (other ISI approved TMT reinforcement bar (SAI/BISCON/THERMAX or equivalent) in super structrue complete as per drawings and technical specification Clauses 1002, 1005, 1010 & 1202

Providing 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

Construction of R.C.C. railing of M 25 grade, 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

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

Drainage spouts complete as per drawing and technical specification.

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

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 specific sizes to WBM specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 kn static roller in stages to proper grade and camber, applying and brooming, crushable 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. Grading-II (63mm to 53mm size broken metal)

Providing laying, spreading and compacting stone aggregates of specific sizes to WBM specification including spreading in uniform thickness, hand packing, rolling with smooth wheel roller 80-100 kn static roller in stages to proper grade and camber, applying and brooming, crushable 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. Grading-III (53mm to 22.4mm size broken metal)

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 0.20 to 0.25 kg per sqm on the prepared bituminous surface cleaned with Hydraulic broom as per Technical Specification Clause 503.

Providing, laying and rolling of open graded premix carpet of 20 mm thickness composed of 13.20 mm to 5.60 mm aggregate 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 grade to be followed by seal coat of either Type A or Type B or Type C as per technical specification clause 508. (I) Bitumin (S-90)

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 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)

DAHAR BASUMATARY

Ajit Narzary