ASTM F3539-22

5.1?The test procedures and interlaboratory study report that result from 5.2?If compliance with this practice is claimed by a coordinator, all steps in Section 6 shall have been followed.

5.3?The 5.4?Precision statistics obtained in an ILS conducted on a single sample of a particular reference material will not capture the frictional variability that exists between different samples of that same reference material. The ILS test procedure may not capture the frictional variability that exists within a single sample of that reference material. The ILS test procedure will not evaluate the stability of the frictional characteristics of a reference material with repeated use over time. While outside the scope of this practice, the homogeneity and stability of reference materials are relevant to the interpretation and utilization of ILS results. Refer to ISO Guide 35 for a discussion of these topics.

5.5?Friction measurements represent characteristics of a surface at the time of testing; the available friction of the surface after use may change significantly. As with reference materials, the measured friction of one sample of a manufactured walkway surface may not represent the friction of other samples of the same product.

5.6?Obtaining test results is one part of a multi-part process of determining whether the available friction of an underfoot surface is adequate. Appendix X1 outlines a set of standards the F13.10 subcommittee intends to develop towards this goal.

1.1?This practice covers creation of interlaboratory study reports and test procedures for the use of portable walkway tribometers for obtaining walkway surface friction measurements.

1.2?This practice does not address the interpretation of data relative to pedestrian safety.

1.3?This practice does not address the suitability of a walkway surface for a particular application.

1.4?This practice does not directly address the important issue of the frictional homogeneity and stability of reference materials and in-use walkway materials.

1.5?Conformance to this practice does not result in an ASTM Test Method.

1.6?Values stated in SI (metric) units are to be regarded as the standard. Values in parentheses are for information only.

1.7?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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.8?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.