WAC 296-880-40010. Ramps, runways, and inclined walkway requirements

Ramps, runways, and inclined walkways must conform to the following provisions: (1) Be at least eighteen inches wide; and (2) Not be inclined more than twenty degrees from horizontal and when inclined, they must be cleated or otherwise treated to prevent a slipping hazard on the walking surface. Note: See WAC 296-880-20005 for guarding ramps, runways, and inclined walkways that are four feet or more above the ground or lower level.