What is the minimum clear distance of any handrail from a wall?

The minimum clear distance of any handrail from a wall is set to ensure safety and usability for individuals using the staircase or ramp where the handrail is installed. A distance of 38 mm provides enough space for users to comfortably grasp the handrail without obstruction from the wall, preventing potential injuries or difficulties in use. This measurement is typically referenced in safety regulations and building codes, which are designed to create accessible environments compliant with standards like those from the International Building Code (IBC) or the Americans with Disabilities Act (ADA).

A distance smaller than this could risk users being unable to properly hold onto the rail, particularly in cases where they may need additional support while moving up or down stairs. Conversely, a larger distance would not impact usability negatively but is generally not specified as the minimum requirement.