Handicap Stair Rail Height

The us ada section 4 9 includes detailed advice for accessible stair design including stair riser height stair tread dimensions stair nosings handrailings hand railing continuity and handrailing extensions at the top and bottom of stairways.

Handicap stair rail height.

Handrail graspability to be either type i or ii with a minimum 1 1 2 inch clearance from a wall. Stair rail system. The adaag dictates the height gripping surface of handrails as to not exceed 38 inches and to be a minimum of 34 inches above stair nosings and ramp surfaces. On any given flight of stairs all steps shall have uniform riser heights and uniform tread widths.

34 to 38 inches handrail height is the height of the handrail in relation to the stairs. Maximum 7 3 4 inch stair riser height. A maximum height of 28 inches 710 mm measured to the top of the gripping surface from the ramp surface or stair nosing is recommended for handrails designed for children. 4 9 2 treads and risers.

Sufficient vertical clearance between upper and lower handrails 9 inches 230 mm minimum should be provided to help prevent entrapment. The current ada standards dictate the height of an ada handrail must be a minimum of 34 inches and a maximum of 38 inches from the walking surface to the top of your grab rail. Top rail may also serve as handrail if height of the system is between 36 and 38 inches. Stairs required to be accessible by 4 1 shall comply with 4 9.

Handrails must be between 30 and 38 inches as measured from the leading edge of the stair tread. Handrails shall be at a consistent height above walking surfaces stair nosings and ramp surfaces. Handrails must be at a consistent height above the stair nosings and ramp surfaces the adaag states. Stair guards do not protect stairs but are often used in conjunction with stairs as with stair landings or elevated walking areas leading to stairs.

Ramp stairs landing your railing cannot. Open risers are not permitted. The top rail must be at least 42 inches in height 1910 29 f 1 ii b and the handrail must be 30 to 38 inches in height 1910 29 f 1 i as measured at the leading edge of the stair tread to the top surface of the rail. Handrail height to be placed a minimum 34 inches to 38 inches.

Minimum 10 inch stair tread depth with nosing or minimum 11 inches with no nosing. In other words even if your railing covers multiple surfaces i e. Maximum 12 3 vertical height rise for a flight of stairs. Top of gripping surfaces of handrails shall be 34 inches 865 mm minimum and 38 inches 965 mm maximum vertically above walking surfaces stair nosings and ramp surfaces.

For stair rail systems installed on or after january 17 2017 the top rail and handrail must be separate.