Patch work with Open – Graded Premix Surfacing20 mm thickness Providing and laying patch work with Open-graded premix surfacing material 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 @1.46 kg per sqm, laid with paver and rolling with a smooth wheeled roller 8-10 tonne capacity, finished to required level and grades complete as per technical clauses 510 of MORTH&H specifications.