Handicap Stair Rail Height

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.

Handicap stair rail height.

The height of your handrail must also remain consistent above walking surfaces stair nosings and ramps. 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. Handrail height to be placed a minimum 34 inches to 38 inches. For stair rail systems installed on or after january 17 2017 the top rail and handrail must be separate.

Stair rail system. On any given flight of stairs all steps shall have uniform riser heights and uniform tread widths. 4 9 2 treads and risers. 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.

Maximum 7 3 4 inch stair riser height. 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. 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. Top rail may also serve as handrail if height of the system is between 36 and 38 inches.

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. Handrails must be between 30 and 38 inches as measured from the leading edge of the stair tread. Sufficient vertical clearance between upper and lower handrails 9 inches 230 mm minimum should be provided to help prevent entrapment. Handrail graspability to be either type i or ii with a minimum 1 1 2 inch clearance from a wall.

Ramp stairs landing your railing cannot. Minimum 10 inch stair tread depth with nosing or minimum 11 inches with no nosing. Handrail and stair rail systems if a stair has a minimum of four risers a handrail is required. 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.

In other words even if your railing covers multiple surfaces i e. Handrails must be at a consistent height above the stair nosings and ramp surfaces the adaag states. 34 to 38 inches handrail height is the height of the handrail in relation to the stairs. Maximum 12 3 vertical height rise for a flight of stairs.

Stair treads shall be no less than 11 in 280 mm wide measured from riser to riser.