Commercial Stair Handrail Height
The way this is measured is to begin at the leading edge of the stair nosing and run an imaginary vertical line upward until it reaches the top of the railing.
Commercial stair handrail height. According to occupational safety and health administration osha requirements in the u s the majority of stair handrails must be between 30 and 37 inches in height. Not specified 42 plus or minus 3 36. 36 minimum 42 minimum. Commercial stair riser height the code specifies that risers should not be more than 7 inches in height and not less than 4 inches when measured vertically between the nosing of the adjacent tread.
34 to 38 34 to 38 28 with a minimum of 9 clearance between the child and adult handrail 30 to 38 36 to 38 may also serve as guard 34 and 42 34 and 42 guard height. Handrails must be mounted between 34 and 38 above the tread nosings and landings. If the handrail isn t circular it needs to have a perimeter between 4 and 6 25 with a maximum cross section of 2 25. The measurement is from the upper surface of the handrail to the surface of the tread which is in line with the face of the riser at the forward edge of the tread.
The handrail should be between 30 34 inches above. Any variation of risers within a flight of stairs should not be more than inch of tolerance. The icc does provide exceptions to this code however. Where they are circular they need to be 1 25 to 2 in diameter.
Handrail height is the height of the handrail in relation to the stairs. Handrails should be no less than 34 inches above the stair or ramp and no more than 38 inches above.