Details: cleaning the existing w.b.m. road surface including removing of binding material and other foreign matter with wire brushes and small picks, sweeping with brooms or soft brushes and finally dusting with old gunny bags and/or compressed air to receive bituminous treatment. as per clause no 502.4.2 and 503.3.1 of most specification. providing and applying tack coat on the prepared surface, heating bitumen in boiler and spraying the bitumen with spray set fitted on bitumen boiler - on granular base such as wbm and wmm surfaces not bitumen primed. rate of application 10kg/10sqm. providing and laying open graded premix carpet 20mm thick on prepared surface in a single course as wearing course composed of specified size of stone aggregates premix with a bituminous binder in mini hot mix plant 6 to 10 tonne laying manually and rolling with power roller 8 to 10 tonne but excluding cost of primer/tack coat. as per clause no 509 of most specification. providing and applying premixed seal coat ty
Sector: PWD