F Min Floor Flatness

Floor flatness ff ffnumbers depict the floor flatness or how close to planar the floor is.

F min floor flatness.

F min testing fmin is the most advanced method available for gauging a floor s ability to support wire or rail guided lift truck traffic in narrow aisle warehouses. An f min 50 specification corresponds to a flatness tolerance of. A superflat defined traffic floor is defined by fmin 100. They are measured differently.

Random traffic or fixed traffic. Ff fl tolerances floor flatness floor levelness for random traffic floor surfaces and fmin tolerances for defined traffic agv floor surfaces. Floor flatness levelness one of the things that distinguishes a high tolerance floor is its f number requirement. Each system has a defined purpose for a given environment.

There are two variations of the f number system. For defined traffic floors the flatness and levelness are measured using a single number called f min. There is no direct relationship between f min and ff fl. A random traffic floor can be superflat by having an ff 100.

F min is actually a direct measurement of the floor surface in the wheel path of the forklift for which the defined traffic area is designed. A single f number f min is therefore used to define the worst acceptable flatness and levelness conditions in a vna aisle and this f min value is assigned based on the expected lift truck and rack height as in table 1 1 overleaf. The higher the f number the flatter or more level the floor. Defined traffic floors use an fmin number.

The system directly controls future vehicle motions by limiting all six of the surface variables that affect hard axle vehicle motions. The more bumps there are the lower the ff number will be and the more difficult it will be for a polished concrete floor to have a uniform appearance. Think of these bumps and high areas like the knuckles on your hand. F min is not calculated like f f or f l.

A defined traffic floor cannot be described with the random traffic floor f numbers. An f min 100 specification is a baseline number corresponding to a flatness tolerance of 1 8 in 10 0. On the other hand random traffic floors where the traffic moves in all directions use ff and fl numbers to define flatness and levelness. It differs from the normal ff fl f numbers in that it is measured with a different instrument and is a continuous measurement.

In other words floor flatness is a statistical measurement of how wavy or bumpy a concrete floor is and takes into account the amplitude height if the waves and the wavelength horizontal distance between waves.