Floor Surface Coefficient Friction

There are standards that allow for these differences and safety direct america can supply the test data and safety standards to determine whether a particular flooring is appropriate.

Floor surface coefficient friction.

It is the relation between these two numbers that determine slip resistance. Measuring coefficient of friction. The friction force is the force exerted by a surface when an object moves across it or makes an effort to move across it. Astm c1028 coefficient of friction coefficient of friction test cof floor slip resistance standards osha osha slip test scof skid test.

For conventional shoes a concrete floor surface will yield a coefficient that is high enough about 0 55 to 70 to preclude the reasonable probability of slipping. 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. This coefficient is a measurement of the relative ability of various surfaces to resist the sliding or slipping of the selected material. The smaller the value the greater the danger.

When it comes to flooring measuring the coefficient of friction helps to establish how safe a surface is. Reflecting its use on other hard surface flooring and incorporating parameters for test sample size and testing in as is conditions or under cleaned conditions ansi a326 3 test method for dynamic coefficient of friction of hard surface flooring materials was developed by a broad consensus of hard surface flooring stakeholders using the core. The other number represents the pressure exerted between the two surfaces. The higher the value of the coefficient of friction the less is the possibility of slipping.

In the application of floor safety it is the coefficient of static friction that we are concerned about because even while walking a shoe is or should be motionless relative to the floor surface. Slip and falls occur when the coefficient of static friction is low enough to allow the friction force between the shoe and the floor to be. F f frictional force n lb. F f μ n 1.

The frictional force can be expressed as. One number represents the force needed to move one surface such as a shoe horizontally over another surface such as tile flooring. A common method to measure the coefficient of friction on a floor involves a leather shoe heel which has a 50lb weight placed on it before being put flat onto the floor it is being tested on. 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.

N normal force between the surfaces n lb there are at least two types of friction forces. μ static μ s or kinetic μ k frictional coefficient.