For Commercial and Industrial applications, including Docks, Aircraft pavements and areas subject to very high wheel loading, Extra heavy duty access covers may be required.
Australian Standard AS3996 – 2006 has three class rating groups for Extra Heavy Duty access covers:
Class E: 13700 kg Nominal Wheel Loading
40000 kg Maximum Loading
Class F: 20000 kg Nominal Wheel Loading
60000 kg Maximum Loading
Class G: 30000 kg Nominal Wheel Loading
90000 kg Maximum Loading
All Extra heavy duty access covers supplied by R&S Grating are rated up to Class G. This is achieved through innovative design, utilising a cellular frame, and the use of Ductile Iron to achieve the high strength necessaryfor Extra heavy duty access covers.