1.1 This practice is intended to establish an accepted procedure for the certification of walkway tribometers. 1.2 This practice applies to walkway tribometers without reference to the specific frictional property measured by any individual walkway tribometer. 1.3 This practice applies to walkway tribometers without reference to the nature of the scale of the readings produced by them. 1.4 The values given in inch-pound units are to be considered as the standard. The values given in parentheses are for information only. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations prior to use. 1.6 The measurement of frictional properties, particularly under wet or contaminated conditions, is subject to numerous uncertainties and variables, including footwear traction (that is, the type of shoes worn and their condition), a persons walking gait, physical condition and attentiveness, the presence of contamination that may affect the degree of contact between the footwear and the walking surface, and the type of test device used. Walkway tribometers have been developed to measure particular aspects of slipperiness. However, there are unresolved scientific questions regarding the accuracy of any particular tribometer and its results in predicting the likelihood of slipping on a walkway surface, particularly under wet or contaminated conditions. Thus, no express or implied representation or warranty is made regarding the accuracy or significance of any tribometer results in terms of measuring frictional properties, particularly under wet or contaminated conditions.
There are numerous walkway tribometers in use and there is no uniform procedure for certifying said usage predicated upon human-gait-based science and metrology based statistical methods. This practice will be used to certify walkway tribometers have followed and documented the scientific and statistical methods for human-gait-based validation, calibration, and statistically based ruggedness, control, and precision and bias. This practice will be used by architects, specifiers, engineers, scientists, manufacturers, academics, code enforcement officials, and those interested in the metrology of pedestrian walkway surfaces.
walkway; tribometer; frictional property
The title and scope are in draft form and are under development within this ASTM Committee.
Citing ASTM Standards
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