Floor Slip Coefficient

That standard specifies a minimum dynamic coefficient of friction of 0 42 for tiles in level indoor areas that may get wet in use.

Floor slip coefficient.

There is a reliable way to know how slippery floor tile will be under both wet and dry conditions. Cof or coefficient of friction slip ratings published by tile manufacturers. In a nonmandatory appendix to a proposed rule in 1990 osha said a reasonable measure of slip resistance is static coefficient of friction scof is recommended as a guide to achieve proper slip resistance. Prior to 2012 the coefficient of friction slip resistance for ceramic tile was tested using the method specified in astm c1028 which provided the static coefficient of friction scof.

Coefficient of friction dcof values for polished concrete surfaces using the test method in section 9 6 of ansi a137 1 american national standards specifications for ceramic tile. How slippery a floor is can be measured by a ratio known as the coefficient of friction cof. Slip resistance testing or floor friction testing is usually desired by the building s owner or manager when there has been a report of a slip and fall accident when there has. If you specify or buy flooring based on a minimum wet dynamic coefficient of friction dcof of 0 42 referred to in the 2012 international building code ibc you may be vulnerable to charges of negligence if a slipping injury occurs on that floor.

The amount of direct contact is very important. Because many variables affect the risk of a slip occurring the cof shall not be the only factor in determining the. What you need to know about the ansi a137 1 a326 3 tile slip test. When someone moves across a surface there is a frictional force.

The most common measure of the relative slipperiness of a floor is its slip resistance or coefficient of friction. Cof values are used to define the slip resistance of walkway surfaces under dry and wet conditions. Cof slip resistance ratings help you determine if you are buying the right tile for the right location. Whether the floor is flat or inclined and how the tile surface is used and maintained.

The time of a slip. A cof of 0 5 is not intended to be an absolute standard value. Floor slip resistance testing is the science of measuring the coefficient of friction or resistance to slip accidents of flooring surfaces either in a laboratory before or after installation or on floors in situ. In this test water was placed on the floor and a weighted plate with a sensor was placed over the water.