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Appendix E of AS/NZS 4586

As the wet pendulum and dry floor friction test methods may not apply to contoured surfaces, Appendix E provides a suitable method for testing the displacement space of a pedestrian surface that has a severely profiled or structured surface. This method measures the capacity of a pedestrian surface to hold contaminants that would otherwise affect slip resistance. Used in conjunction with ramp testing, the displacement volume test method is prudent where the surface is severely profiled or structured and designed to provide drainage or entrapment of contaminants.