Construction of Approach road to Treatment Plant at Police Tikrey Kishorinagar, SD-III under CD, APWD, Diglipur

Amount

Surface dressing of the ground including removing vegetation and in- equalities not exceeding 15 cm deep and disposal of rubbish, lead up to 50 m and lift up to 1.5 m.

All kinds of soil

Preparation and consolidation of sub grade with power road roller of8 to 12 tonne capacity after excavating earth to an average of 22.5cm depth, dressing to camber and consolidating with road rollerincluding making good the undulations etc. and re-rolling the subgrade and disposal of surplus earthwith lead upto 50 metres.

Providing and applying tack coat using hot straight run bitumen ofgrade VG - 10, including heating the bitumen, spraying the bitumenwith mechanically operated spray unit fitted on bitumen boiler,cleaning and preparing the existing road surface as perspecifications :

On bituminous surface @ 0.50 Kg / sqm

2.5 cm premix carpet surfacing with 2.25 cum and 1.12 cum ofstone chippings of 13.2 mm and 11.2 mm size respectively per 100sqm and 52 kg and 56 kg of hot bitumen per cum of stone chippingsof 13.2 mm and 11.2 mm size respectively, including a tack coatwith hot straight run bitumen, including consolidation with road rollerof 6 to 9 tonne capacity etc. complete (tack coat to be paid for separately).

With paving Asphalt grade VG - 30 with no solvent

Providing and laying Bitumen Penetration Macadam with hard stoneaggregate of quality, size and grading as specified, with bitumen ofsuitable penetration grade, including required key aggregate asspecified, spreading coarse aggregate with the help of self propelled/tipper tail mounted aggregate spreader and applying bitumen by apressure distributor and then spreading key aggregate with the helpof aggregate spreader complete, including consolidation with roadroller of minimum 8 to 10 tonne capacity to achieve specified valuesof compaction and surface accuracy :

For 50mm compacted thickness using coarse aggregateof size 50-20 mm graded @ 0.60 cum per 10 sqm keyaggregate of size 12.5 mm graded @ 0.15 cum per 10sqm. With paving asphalt grade VG - 10 @ 50 kg/ 10sqm.

Providing and laying seal coat of premixed fine aggregate ( passing2.36 mm and retained on 180 micron sieve) with bitumen using 128kg of bitumen of grade VG - 10 bitumen per cum of fine aggregateand 0.60 cum of fine aggregate per 100 sqm of road surface, includingrolling and finishing with road roller all complete.

Preparation of sub-base road pavement with commercial dry lime(slaked), fly ash stabilised soil with a mix of 3% lime, 12% fly ashand 85% local suitable soil by weight, so as to achieve minimumfield C.B.R. of 20, including mixing, rolling with road roller curing etc. all complete.

Minimum thickness 15 cm

Providing,Laying, spreading and compacting stone aggregate of specified sizes to WBM specifications in uniform thickness, hand picking, rolling with 3 wheeled road / vibratory roller 8-10 tonne capacity in stages to proper grade and camber, applying and brooming requisite type of screening / binding material to fill up interstices of coarse aggregate, watering and compacting to the required density.

Sub base with stone aggreagate 90 mm to 45 mm including stone screening13.20mm

Base coarse with stone aggreagate 63 mm to 45 mm including stone screening 13.20 nn (Type-A)

Base coarse with stone aggreagate 53 mm to 22.4 mm including stone screening 11.20 mm (Type-B)

Extra for adding Shredded Plastic waste in Bituminous item @ 8 to 10 % as per IS SP098

GOUTAM BISWAS