Wet Pendulum Slip Testing

Wet pendulum slip testing can be conducted in both laboratory settings and on-site. This method of testing utilizes a spring-loaded rubber slider that glides across a surface over a set distance, measuring the resistance encountered by the pendulum as it makes contact. The use of wet pendulum testers for evaluating pedestrian surfaces was established in 1993 with the introduction of AS/NZS 3661.

Under the current Australian standards, two types of rubber sliders can be used: slider 96 (4S rubber) and slider 55 (TRL rubber). Below is an illustration of a wet pendulum tester.