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How to Get Reliable and Useful Floor Slip Resistance Test Results

Slip and fall injuries can carry total liabilities that are often in the hundreds of thousands of dollars or even more. Investment in flooring is long-term and often involves appreciable capital, whether you are an individual homeowner or have a string of large office buildings and shopping centers. Though the charges for floor slip resistance […]

BOT-3000E Manufacturer Advises Against Using ANSI/NFSI B101.3 and B101.1 to Assess Floor Slip Resistance

The manufacturer of the BOT-3000E digital tribometer is Regan Scientific Instruments of Carrollton (Dallas), Texas. Recently we asked Regan for an update on ANSI B101.3, “Test Method for Measuring Wet DCOF of Common Hard-Surface Floor Materials,” approved January 18, 2012, and ANSI/NFSI B101.1. We received a reply from Peter Ermish, President. Here’s part of his […]

Maximum Coefficient of Friction is not Limited to 1.00

It’s sometimes assumed that coefficient of friction (COF) has a maximum theoretical and practical  value of 1.00. This isn’t true; there is no maximum. It is true that values exceeding 1.00 are so slip-resistant that their actual value is often of little interest. Some COF measuring instruments, such as BOT-3000E and English XL, are not […]

Proven Standard Dynamic Friction (DCOF) Test Instrument for $1980!

The SlipAlert dynamic coefficient of friction tester has been in wide use for many years but now is offered by Safety Direct America for a limited time at close to half of its previous price! A roller-coaster type of dynamic floor slip tester, SlipAlert’s friction measurement was modeled after the physics of the pendulum DCOF […]

Many Polished Concrete Floors are Slippery when Wet

Can polished concrete floors be slippery when wet? Several web sites say yes, but others (mostly polished concrete vendors) say no, it only looks that way. A study of polished concrete published by the American Society of Concrete Contractors (ASCC) in Concrete International shows wet dynamic coefficients of friction (DCOF) as measured by ANSI A137.1 […]

A Review of Standards for Pedestrian Slip Resistance Testing

There are a number of floor slip test methods established by standards-setting organizations that assess pedestrian slip resistance. Here we’ll review the most widely known and current ones. They are distinguished by the devices used in the testing. Terms such as DCOF rating, coefficient of friction, slip coefficient, slip resistance rating, and friction coefficient all […]

Beware of Slippery Finished-in-Place Floors Installed by Clueless Contractors

Some floors are covered with premanufactured stuff, such as marble, granite or ceramic tiles, wood, or vinyl composite tile. Other floors are created in place — including epoxy, terrazzo, and concrete. Topical sealers added to premanufactured floors also constitute a finished-in-place surface — the pedestrian is not walking on the flooring, but on the sealer. […]

New Study Shows Sotter Engineering to be one of World’s Most Accurate Pendulum Floor Slip Test Labs

A recent global interlaboratory program “Slip Resistance Proficiency Testing — Pendulum Friction Tester,” showed Sotter Engineering Corporation’s Safety Direct America (SDA) floor slip resistance testing laboratory to be one of the world’s most accurate in use of the pendulum skid tester. The pendulum is a national standard for pedestrian floor and tile slip resistance testing […]

Financial losses from slip and fall accidents

Slip and fall accidents are the #1 reason Americans show up at emergency rooms, according to data from the CDC. Slippery floors are a silent epidemic in America, and lawsuits are filed daily across the nation involving major injuries and deaths from slippery floors. Unless the negligent party is the victim’s employer, the victim of […]

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 […]