NOT KNOWN DETAILS ABOUT COMMERCIAL MODIFICATIONS

If a ramp run has a rise larger than six inches or is for a longer period than 72 inches, handrails are suggested. For safety, handrails must be placed together each side with the ramp segment. The within handrail must be constant on switchback or dogleg ramps. The best on the handrail should be mounted amongst 34 and 38 inches over ramp surfaces.M