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Updated: May 25, 2026

The Ladder Rung Walking Task: A Scoring System and its Practical Application.
Published on: June 12, 2009
The development of a universal approach to testing of walkway slip resistance in the U.S
James Flynn1, Steven Di Pilla, Keith Vidal
1J2 Engineering, 5234 E Pine Avenue, Fresno, CA 93727, USA.
Abstract:
The measurement of walkway slip resistance is required to assess the risk of slipping. Unlike other countries, the U.S. has not decided upon a single approach to the measurement of slip resistance. Several types of tribometers are available to measure slip resistance however, the measured value of the slip resistance of a given surface has been found to be tribometer specific. The introduction of ASTM International Standard F2508 Standard Practice for Validation and Calibration of Walkway Tribometers Using Reference Surfaces, has produced a method which allows validation of each type of tribometer and the values generated during testing.
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