4 9 2 treads and risers.
Stair handrail requirements ada.
If you choose to place a handrail in another area such as a corridor it must meet the handrail.
These regulations adopted revised enforceable accessibility standards called the 2010 ada standards for accessible design 2010 standards or standards.
Required compliance 210 stairways 504 handrails 504 6 505 common questions.
Stair treads shall be no less than 11 in 280 mm wide measured from riser to riser.
Minimum 36 inch clear width for stairway.
Therefore let us recap on the residential stair code requirements.
Stair and ramp handrail requirements for children ada ramp and handrails requirements are different for children or when children are the principle users in a building or facility such as an elementary school requiring all of the ada handrail specifications for adults and a second set of handrails at a lower height for children.
The department of justice published revised regulations for titles ii and iii of the americans with disabilities act of 1990 ada in the federal register on september 15 2010.
Summary of code requirements for residential stairs.
Required compliance interior and exterior stairs that are part of a required means of egress must meet the standards.
This guide explains requirements in the ada standards for stairways.
Ada stair design specifications ada stair specifications for stair handrailing compliance with the americans with disabilities act.
So this basically sums up the basic code requirements for residential stairs and their dimensions.
Section 4 26 4 of the 1991 standards requires handrail gripping surfaces to have edges with a minimum radius of 1 8 inch.
Handrails are not required on walking surfaces with running slopes less than 1 20.
They are required on both sides of stairs and ramps.
A handrail is required on stairs with two or more risers and ada ramps with a rise of 6 inches.
Open risers are not permitted.
While the finer details will ultimately be influenced by your local government s building regulations the international building code the international residential code and the standards set by the americans with disabilities act of 1990 maintain that exterior stairs that are a required point of egress in other words stairs that must be crossed on your way in and out of the building.
Maximum 4 1 2 inch handrail projection into stairway width on either side.
The requirements for stair and ramp handrails in this document are for adults.
The 2010 standards provide more flexibility than the 1991 standards as follows.
On any given flight of stairs all steps shall have uniform riser heights and uniform tread widths.
Stairs required to be accessible by 4 1 shall comply with 4 9.