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Floor Slip Rating: SCOF vs. DCOF

Static coefficient of friction (SCOF) was formerly used to measure the slip resistance of a wet floor in the USA, but the test method (ASTM C1028) was withdrawn by the ASTM in 2014. Experts in the USA now know to use dynamic coefficient of friction (DCOF), as the rest of the world has been using […]

ANSI A326.3 Acutest Does Not Predict Likelihood of Slip

A widely used floor friction test, American National Standards Institute A326.3, states in its introduction that “it can provide a useful comparison of surfaces, but it does not predict the likelihood a person will or will not slip on a hard surface flooring material.” The test assesses wet dynamic coefficient of friction (DCOF) using the […]

How does ANSI DCOF compare with Pendulum Test Value?

The most recent American National Standards Institute (ANSI) dynamic coefficient of friction (DCOF) test method, A326.3 (April 2017), states that “hard surface flooring materials suitable for level interior spaces expected to be walked upon when wet with water shall have a wet DCOF of 0.42 or greater when tested … as per this standard.” The […]

ASTM F2508 and the pendulum slip resistance tester

ASTM F2508 is based on a rigorous scientific study of 11 tribometers (or floor slip resistance test devices) that was held at the University of Southern California Medical Center. The peer-reviewed results were published in 2010 in the Journal of Forensic Sciences. Four tiles were tested with the 11 slip test devices, and later a […]

Test Your New Pool Deck’s Slip Resistance BEFORE Opening the Pool!

It is amazing how often both large and small swimming pool decks are installed with no thought to wet slip resistance until falls, sometimes catastrophic, begin to happen. By the time the first serious slip injury happens, the flooring vendor has usually cashed his check and is unconcerned about the problem. Wet bare feet have […]

DCOF Rating for Floors

The latest American slip test for floors is the DCOF rating test method specified in ANSI A326.3. Although this test is a much better test than the now-withdrawn ASTM C1028 that was previously included in the International Building Code, the new test method comes with a great deal of “disclaimers”, including the warning that a […]

Putting Together an Injury and Illness Prevention Program

You’ve read the statistics and you’ve seen the benefits. Now it’s time to assemble an OSHA-compliant Injury and Illness Prevention Plan (or IIPP) and put it in place in your business to help keep your employees safe and healthy. So, how do you go about writing and adopting one company-wide? Safety Direct America is here […]

A Caveat about Dal-Tile’s Situation-Specific Minimum DCOF AcuTest Values

This blog has previously praised Dal-Tile for recognizing that “one size fits all” does not work when it comes to slip resistance standards (or bikinis, for that matter). For instance, Dal-Tile has recommended a minimum ANSI A137.1 DCOF AcuTest wet dynamic coefficient of friction of 0.60 for swimming pool decks, public showers, and locker rooms. […]

Cobblestones in San Juan PR: America’s Largest Slip Hazard?

As if San Juan and the rest of Puerto Rico didn’t have enough economic and hurricane-damage problems, some of the streets of San Juan are paved with blue 18th-century cobblestones that are very slippery when wet. In November 2017, a cruise passenger from the mainland USA fell and broke his arm (despite being warned about […]

Why We Offer a “Recommended Tile Slip Test Package”

When our clients ask for an ANSI/NFSI A137.1 test we often recommend that they order a pendulum test as well. The pair of floor slip resistance tests is popular, and we offer a discounted price of $387.00 (for lab testing) when they are ordered together. The reason has to do with the A137.1 standard — […]