Important update regarding Rz value to estimate slip resistance
A presentation considering surface microroughness data was given at the Group meeting on 6th June 2019. The data presented suggests that 2 different machines, which appear to be measuring the same microroughness parameter, can give different results.
The Group reminds members, and other interested parties, that the roughness measurement should be considered as a complementary measurement to be used in conjunction with pendulum test values. Section 7 of the current Guidelines refers (Issue – 5 October 2016).
The work presented is ongoing and will be revisited before the next Group meeting in October 19 when an update will be given.
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