Repair and strengthening of damaged bituminous road from Sirmour - Semariya to Beehar Barrage and Tail Regulator (1.8015Km)

SOR Item No.-3.11-Scarifying existing bituminous surface to a depth of 50 mm by mechanical means Scarifying the existing bituminous road surface to a depth of 50 mm and disposal of scarified material with in all lifts and lead upto 1000 metres. (old bituminous road)

SOR Item No.-4.1-(Granular sub - base with well graded material (CBR>30 of more) (Table :- 400-1 & Table 400-2) Construction of granular sub-base by providing well graded material like natural sand crushed gravel or crushed stone having CBR>30, spreading in uniforms layers with motor grader on prepared surface, mixing by mix in place method with rotavator or plant mix method at OMC, and compacting with vibratory rollers of 80 to 100 K.M. static weight to acheive the desired density, complete as per clause 401 of specification.

SOR Item No.-4.8-Water Bound Macadam Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including specific 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 Materials to fill up the interstices of coarse aggregate, watering and compacting to the required density as per clause 404 of specification. (a) Grading- II (53 to 22.4mm) Using Screening Type-B (11.2mm Agg.)

SOR Item No.-4.13 - Construction of hard Shoulder with approved material/selected soil i/c excavation all lifts & leads i/c into required slope & camber of 4% and compacting using vibratory roller of 80 to 100 KN static weight to meet requirement as per relevant clause of 400. (B) Hard Shoulders (CBR value >12)

SOR Item No.-5.1 - Prime coat providing and applying primer coat with bitumen emulsion on prepared surface of granular Base including cleaning of road surface and spraying primer at the rate of 0.75 kg/sqm using mechanical means as per clause 502 of specifications.

SOR Item No.-5.2 - Providing and applying tack coat with catonic bitumen emulsion using emulsion pressure distributor on the prepared bituminous/granular surface cleaned with mechanical broom and as per relevant clause of section-503 of specifications. (ii) @0.30 kg per sqm (dry & hungry bituminous surface/granular surface treated with primer)

SOR Item No.-5.9- 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 or cut-back 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 smooth wheeled roller 8-10 tonne capacity, finished to required level and grades all complete as per clause 510 of specification. (i) Case - I : Mechanical method using penetration grade Bitumen VG 30 and HMP of appropriate capacity not less than 75 tonnes/hour

SOR Item No.-5.11 (ii) - 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, all complete as per clause 511 of specification (ii) Case - II : Type B (Providing and laying of premix sand seal coat using HMP of appropriate capacity not less than 75 tonnes/ hours using crushed stone chipping (aggregate shall pass 2.36mm seal and retained to 180 micron sieve) and penetration bitumen VG 30 of suitable grade all complete as per clause 511 of specification.