The access covers and grates of this class are capable of withstanding a 15kN (~1.5 tonnes) test load which can only be used in pedestrian areas and by pedal cyclists.
Car parks and pedestrian areas where occasional vehicular access is likely.
The access covers and grates of this class are capable of withstanding a 250kN (~25 tonnes) test load.
Carriageways, hardshoulders and pedestrian areas where cars and lorries have access.
The access covers and grates of this class are capable of withstanding a 600kN (~60 tonnes) in test loading areas, docks, aircraft pavements.
The access covers and grates of this class are capable of withstanding a 900kN (~90 tonnes) in test load areas, docks, aircraft pavements.