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(SCOF) was formerly used to measure the slip resistance of a wet floor in the USA, but the test method (ASTM C1028) was withdrawn by the ASTM in 2014.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 […]
Tag Archives: C 1028
COF vs. Pendulum Test Value (PTV to DCOF conversion table)
Pendulum slip (or skid) resistance data are usually expressed as PTV, Pendulum Test Value (or sometimes BPN, British Pendulum Number, or even SRV, Slip Resistance Value). The question has been asked, “What’s the coefficient of friction?” This number (dynamic COF – DCOF) was calculated decades ago at the U.S. National Bureau of Standards, and can […]
Video Explains IBC Requirements for Floor Slip Resistance
The 2012 International Building Code changed slip resistance requirements for indoor floors that may get wet in use. The previously-used ASTM C 1028 friction test method is obsolete, and testing using the AcuTest method in ANSI A137.1 slip test must show a minimum of 0.42 wet dynamic coefficient of friction — but many other factors […]
Head Off Litigation with Third-Party Confidential Periodic Floor Slip Resistance Testing
Slips and falls can result from a wide range of causes. To avoid litigation your commercial property needs to be immune to claims that your negligence caused an injury. The most effective way of doing this is to have Safety Direct America periodically slip test your floors for slip resistance, and have your floor care […]
Improving the World’s Most Sophisticated Floor Slip-Resistance Safety Standards
In June’s post we discussed situation-specific slip resistance safety standards, which reflect the use or function of a floor and the friction (coefficient of friction) demands placed on it. Many U.S. floor friction standards are “one size fits all” — for instance, a wet dynamic coefficient of friction (DCOF) of 0.43 is considered adequate for […]
Three Common Fallacies about Floor Slip Resistance
There are three widely-held misconceptions about pedestrian slip resistance. If you’re aware of them it can help you avoid a nasty, expensive, and possibly life-changing surprise. Fallacy #1: “If a floor has a matte finish — that is, it’s not “shiny” —, it won’t be slippery when wet.” Truth is, many floors that have a matte […]
Situation-Specific Floor Slip Resistance Testing Standards
In the USA, pedestrian slip resistance standards for flooring have traditionally been pass-fail. For instance, a coefficient of friction (COF) of 0.60 might be considered “safe” but 0.59 was “not safe.” This applied to any situation provided the floor was level. Recently the American National Standards Institute (ANSI) has published some standards that are a […]
BREAKING NEWS: Dynamic Slip Testing Enters International Building Code!
Slip accident prevention in the USA and Canada finally emerged from the Stone Age when dynamic coefficient of friction testing with a specific test method and safety standard became a verified part of the current International Building Code (IBC) in February 2013. The IBC is used mainly in the USA, but a few others use it […]