Construction of bituminous road for light vehicle at ROCP under Rajmahal Area.

Item Description/ Heading

Water Bound Macadam: Providing, laying, spreading and compacting stone aggregates of specific sizes to water bound macadam specification including spreading in uniform thickness, hand packing, rolling with 3 wheeled steel/ vibratory roller 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. By Mechanical Means: Vibratory Roller: Grading II: Using Screening Type-B (11.2mm agg.)

Granular Sub-Base with Graded Material (Table:- 400-1): Plant Mix Method: Construction of granular sub-base by providing close graded Material, mixing in a mechanical mix plant at OMC, carriage of mixed Material to work site, spreading in uniform layers with motor grader on prepared surface and compacting with vibratory power roller to achieve the desired density, complete as per clause 401: For Grading-V Material

Dense Graded Bituminous Macadam Grading-I: Providing and laying dense graded bituminous macadam with higher capacity batch type HMP using crushed aggregates of specified grading, premixed with bituminous binder @ 4.0 per cent by weight of total mix and filler, transporting the hot mix to work site, laying with a hydrostatic paver finisher with sensor control to the required grade, level and alignment, rolling with smooth wheeled, vibratory and tandem rollers to achieve the desired compaction as per MoRTH specification clause No. 505 complete in all respects. Grading I (37.5 mm nominal size)

Tack Coat on Bituminous surfaces: Providing and applying tack coat with bitumen emulsion using emulsion pressure distributor at the rate of 0.20 kg per sqm on the prepared bituminous surface cleaned with mechanical broom.

Providing and laying seal coat over prepared surface of road withbitumen heated in bitumen boiler fitted with the spray set sprayingusing 98 kg of bitumen of grade VG - 10 and blinding surface with0.90 cum of stone aggregate of 6.7 mm size (Passing 11.2 mmsieve and retained on 2.36 mm sieve) per 100 sqm of road surface,including rolling and finishing with power road roller all complete.Note: Seal coat items to be operated only with the prior approval ofchief Engineer concerned.

Road Marking with Hot Applied Thermoplastic Compound with Reflectorising Glass Beads on Bituminous Surface: Providing and laying of hot applied thermoplastic compound 2.5 mm thick including reflectorising glass beads @ 250 gms per sqm area, thickness of 2.5 mm is exclusive of surface applied glass beads as per IRC:35.The finished surface to be level, uniform and free from streaks and holes.

Road Markers/Road Stud with Lense Reflector: Providing and fixing of road stud 100x 100 mm, die-cast in aluminium, resistant to corrosive effect of salt and grit, fitted with lense reflectors, installed in concrete or asphaltic surface by drilling hole 30 mm upto a depth of 60 mm and bedded in a suitable bituminous grout or epoxy mortar, all as per BS 873 part 4:1973

Prime Coat over WMM/WBM: Providing and applying primer coat with SS1 grade bitumen emulsion on prepared surface of granular Base including clearing of road surface and spraying primer at the rate of 0.70 kg/sqm using

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