Restoration of Gossaigaon Bashbari Road

Amount

(A) CD Work: 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 tranches with excavated suitable material. 1. Ordinary Soil

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

Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications Clauses 802, 803, 1202, & 1203. B. With Natural gravel I). P.C.C Grade M 10 i) Nominal Mix 1:3:6

Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications Clauses 802, 803, 1202, & 1203. B. With Natural gravel IV). R.C.C Grade M 10

Providing concrete for plain/reinforced concrete in open foundations complete as per drawings and technical specifications Clauses 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 substructure complete as per drawings and technical specification Clauses 802, 804, 805, 806, 807, 1202 ans 1204 B. With Natural Gravel iv) R.C.C.Grade M 25 (i) For Height up to 5m

Supplying, fitting and placing TMT (Fe-500 D) reinforcement (from primary producer: TATA/SAIL/Esser Steel/Jindal Steel/Shyam Steel/RINL) in foundation complete as per drawings and technical specification Clauses 1000 and 1202.

Supplying, fitting and placing TMT (Fe-500 D) reinforcement (Other ISI approved TMT reinforcement bar (SAI/BISCON/THERMAX or equivalent) in substructrue 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.

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

Providing and laying reinforced cement concrete in superstructure as per drawing and technical specification Clause 800, 1205.4 and 1205.5 B. With Natural Gravel II. RCC M-25 (a) Height up to 5m

Supplying, fitting and placing TMT (Fe-500 D) reinforcement (Other ISI approved TMT reinforcement bar (SAI/BISCON/THERMAX or equivalent) in superstructrue complete as per drawings and technical specification Clauses 1002, 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 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 Clause 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.

(B) 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 sub grade and earthen shoulders with approved material obtained from borrow pits with all lift 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 specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 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 2 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 water bound macadam specification including spreading in uniform thickness, hand packing, rolling with three wheel 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 (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 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 13.2 mm to 5.6 mm aggregates 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. (i) Bitumen (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, 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)

NIRITA NARZARY

SAJAL DEBNATH