Standard Interpretations - Table of Contents|
| Standard Number:||1910.22|
Note: The following appendix to Subpart D serves as a nonmandatory guideline to assist employers in complying with these sections, and to provide other helpful information. This appendix neither adds to nor detracts from the obligations contained in OSHA standards.Although this discussion of COF appears only in a nonmandatory appendix in a rulemaking proposal, it appears to have been the basis for a statement included in an advisory appendix to the ADA Accessibility Guidelines (ADAAG) of the Access Board. The appendix statement (at A4.5) is as follows: "The Occupational Safety and Health Administration recommends that walking surfaces have a static coefficient of friction of 0.5." Together, OSHA's rulemaking proposal and the reference in ADAAG probably account for the attribution of a 0.5 COF to OSHA.
2. Slip Resistance. A reasonable measure of slip-resistance is static coefficient of friction (COF). A COF of 0.5, which is based upon studies by the University of Michigan and reported in the "Work Surface Friction: Definitions, Laboratory and Field Measurements, and a Comprehensive Bibliography," is recommended as a guide to achieve proper slip resistance. A COF of 0.5 is not intended to be an absolute standard value. A higher COF may be necessary for certain work tasks, such as carrying objects, pushing or pulling objects, or walking up or down ramps.
Slip-resistance can vary from surface to surface, or even on the same surface, depending upon surface conditions and employee footwear. Slip-resistant flooring material such as textured, serrated, or punched surfaces and steel grating may offer additional slip-resistance. These types of floor surfaces should be installed in work areas that are generally slippery because of wet, oily, or dirty operations. Slip-resistant footwear may also be useful in reducing slipping hazards.
|Standard Interpretations - Table of Contents|