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Let’s talk Coefficient of Friction!

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Not the most exciting headline, but an important subject that does have implications for standards and international requirements. Let’s talk Coefficient of Friction!

The most prevalent non-slip standard is Pendulum, as we have discussed before. Pendulum is a dynamic test; there are also static tests. An example of a Coefficient of Friction (CoF) static test would be ISO7176. A static test measures the force required to get a test object moving across the test surface, and a dynamic test, such as a Pendulum test, measures the force required to stop a test object moving across the test surface.

Over the past two decades, a dynamic CoF test has been the most suitable method for determining slip values as people are typically moving when they slip.

Pendulum was a historic British test created by the Road Research Laboratory; it was then certified as BS7976. The standard international BS7976 was replaced by EN 13036-4. This now makes it easier to cross international borders with the same technical approval.

EN 13036-4 is, however, only one CoF standard. There are many others, including DIN51130, DIN51097 etc.

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