Open – Graded Premix Surfacing 20mm thickness Providing, laying and compaction of open – graded premix surfacing of 20 mm thickness consisting of crushed stone aggregates of specified grading premixed in a Continuous type hot mix plant with bituminous binder VG-10 @ 1.46kg per sqm, laid with Paver Finisher Mechanical and rolling with a smooth wheeled roller 8-10 tonne capacity, finished to required level and grades complete as per technical clause 510 of MORT&H specifications