Ada Stair Tread Requirements

Our ada and osha compliant stairs ramps and platforms are made in america out of durable aluminum and will not rust or rot.

Ada stair tread requirements.

The ada spells out requirements for stairs in its accessibility for buildings and facilities guidelines. Stair treads shall be no less than 11 in 280 mm wide measured from riser to riser. 4 9 2 treads and risers. 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.

Risers shall be 4 inches 100 mm high minimum and 7 inches 180 mm high maximum. All steps on a flight of stairs shall have uniform riser heights and uniform tread depths. Requirements for stairways address treads and risers surfaces nosings and handrails. Thus ada requirements provide disabled and handicapped people access to buildings both public and private that they would not have otherwise had.

Each stair tread is 11 inches 280 mm deep minimum with a sloped riser. Exit stairway enclosures stairways ada standards 210 504. 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 ada standards apply requirements for stairways to each stair that is part of a required means of egress 210.

As part of that law the ada establishes accessibility requirements for construction and alterations of government facilities public spaces and commercial facilities. The americans with disabilities act ada founded in 1990 is an american civil rights law that forbids discrimination towards disabled individuals. Stair treads shall comply. All of our ramps are proudly made in the usa.

504 2 treads and risers. 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. Treads shall be 11 inches 280 mm deep minimum.

These aluminum step systems are code compliant with ibc ada osha stair requirements. The ibc contains requirements for exit stairway enclosures that address fire resistance and smoke protection stairways and handrails signs and other features. Open risers are not permitted.