Floor Surface Coefficient Friction

The higher the value of the coefficient of friction the less is the possibility of slipping.

Floor surface coefficient friction.

The other number represents the pressure exerted between the two surfaces. Since this is a coefficient two numbers are involved. 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 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.

Measuring coefficient of friction. Coefficient of friction cof is a mathematical term used to describe the effect of dragging one substance shoe sole material over another flooring surface. 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. 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.

N normal force between the surfaces n lb there are at least two types of friction forces. The frictional force can be expressed as. 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. 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.

When it comes to flooring measuring the coefficient of friction helps to establish how safe a surface is. The smaller the value the greater the danger. The slip resistance of ceramic tile in ordinary. It is the relation between these two numbers that determine slip resistance.

F f μ n 1. 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. 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.