Determine whether ANSI A326.3 DCOF testing applies to, and reliably measures, a polished concrete floor

Steps

1. Confirm ANSI A326.3 (Tile Council of North America / ANSI, current edition reflecting the 2021 revision with the 2022 five-category product-use DCOF classification) explicitly includes polished and unpolished concrete within its scope of hard-surface flooring materials, alongside tile, stone, and other hard surfaces.
2. Select the applicable use-category minimum wet dynamic coefficient of friction value, since the standard sets different minimums for different use categories rather than a single universal number for every space.
3. Be aware that some polished concrete and polished stone surfaces can produce artificially high DCOF readings on common test devices due to a stiction effect (the test slider sticking to a very smooth polished surface), which can mask real slip risk.
4. Where results seem unexpectedly favorable for a highly polished floor, flag the stiction limitation and consider supplementing with real-world traffic experience or an alternate assessment rather than relying solely on one lab reading.
5. Document the specific gloss level/finish tested, since DCOF on the same slab can differ meaningfully between a matte honed finish and a high-gloss polished finish.