Ada Stair Tread Requirements

These aluminum step systems are code compliant with ibc ada osha stair requirements.

Ada stair tread requirements.

All of our ramps are proudly made in the usa. This ada detail for 11 inch stair tread width refers to what some specifications call stair tread depth the distance from stair nose to stair riser on an individual stair tread. Stair treads shall comply. 504 2 treads and risers.

Open risers are not permitted. Each stair tread is 11 inches 280 mm deep minimum with a sloped riser. Providing visual contrast light on dark or dark on light on the top and bottom steps that is approximately 2 inches wide and located either on nosings or at the leading edges of treads is helpful for people with low vision. The americans with disabilities act ada founded in 1990 is an american civil rights law that forbids discrimination towards disabled individuals.

The ada specification measures from riser to riser essentially excluding the additional amount of tread depth afforded by the tread nosing. An essential component to a building s ada compliance are the stairs up to the building. Thus ada requirements provide disabled and handicapped people access to buildings both public and private that they would not have otherwise had. These handicap handrails and steps will give your business a clean professional look.

The ada spells out requirements for stairs in its accessibility for buildings and facilities guidelines. 4 9 2 treads and risers. All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Stair treads shall be no less than 11 in 280 mm wide measured from riser to riser.

Open risers are not permitted. On any given flight of stairs all steps shall have uniform riser heights and uniform tread widths. The ibc contains requirements for exit stairway enclosures that address fire resistance and smoke protection stairways and handrails signs and other features. Treads shall be 11 inches 280 mm deep minimum.

Risers shall be 4 inches 100 mm high minimum and 7 inches 180 mm high maximum. Requirements for stairways address treads and risers surfaces nosings and handrails. As part of that law the ada establishes accessibility requirements for construction and alterations of government facilities public spaces and commercial facilities.