Tag Archives: SCOF

ANSI Issuing Another Standard Slip Test Method for Flooring Materials

The American National Standards Institute (ANSI) is issuing a new test method, with minimum dynamic coefficient of friction (COF) standard, for slip resistance of hard flooring materials, wet or dry, laboratory or field testing. No minimum COF is provided for exterior applications. The BOT-3000E digital tribometer is approved for testing. The Secretariat for the new […]

COF vs. Pendulum Test Value

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) was calculated decades ago at the U.S. National Bureau of Standards, and can be obtained […]

Proposed Federal Rule for Floor Slip Resistance

The U.S. federal government’s Consumer Product Safety Commission (CPSC) is considering a petition requesting rule making to require that manufacturers of floor coverings, floor coverings with coatings, and treated floor coverings label their products’ slip resistance in accordance with an ANSI/National Floor Safety Institute (NFSI) standard, B101.5. (NFSI, Safety Direct America and others offer for-fee […]

OSHA’s “Suggestion” for Minimum Floor Coefficient of Friction (COF)

We often hear the question, “What does OSHA require for floor slip resistance?” The answer is that OSHA doesn’t require anything, but nevertheless has caused a lot of confusion for employers and the public on this subject. There has never been an official OSHA slip test or safety standard for flooring. In a nonmandatory appendix […]

What’s the Difference Between the Three ANSI standards for floor slip resistance?

The American National Standards Institute (ANSI) has three pedestrian floor friction standards involving tests using the BOT-3000E digital tribometer, intended for testing flooring for indoor use. Why do they have three standards, and what’s the difference between them? They all have different test methods and different minimum coefficient of friction values (0.42, 0.43, and 0.60). […]

When Should You Test Flooring for Slip Resistance?

Many building owners find themselves in trouble after a refurbishment or new build, because the flooring is unexpectedly slippery when wet. An entrance lobby, restroom, pool deck, spa, or factory floor are common locations where this problem occurs. When should flooring be tested for slip resistance? Some architects might say, “Never.” Many lawyers might say, […]

Do All Pedestrian Ramps Need the Same Coefficient of Friction?

The minimum safety standard for coefficient of friction for a pedestrian ramp should depend on the angle of the ramp and the weight of the separate load (shopping cart, wheelchair, gurney, etc.), if any, the pedestrian is controlling. However, that’s not how American safety standards are written. In the USA, traditionally safety standards for slip […]

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 […]

Variables that Affect Slip Resistance of Polished Concrete

At the 6th Annual International Concrete Polishing & Staining Conference in Atlanta in September 2013, a panel discussion was organized and chaired by Ken Fisher of Nu-Safe. On the panel were the manufacturer of the BOT-3000E tribometer (floor slip resistance test meter); an Orlando attorney for large international property owners; and slip and fall prevention […]