Ada Stair Handrail Extension Requirements

The inside handrail on switchback or dogleg stairs shall always be continuous.

Ada stair handrail extension requirements.

In alterations full extensions of handrails shall not be required where such extensions would be hazardous due to plan configuration. At the top of a stair flight the handrail must extend parallel to the ground for 12 inches minimum starting above the first riser nosing. Enjoy the videos and music you love upload original content and share it all with friends family and the world on youtube. There are several requirements for to handrails on stairs.

Handrails that are not continuous must have a horizontal extension at the top and bottom of the run. At the top of a stair flight handrails shall extend horizontally above the landing for 12 inches 305 mm minimum beginning directly above the first riser nosing. A minimum 12 inch 305 mm horizontal extension is required at each top riser indicated in the figure by the dimension x. Handrails that are not continuous must have a horizontal extension at the top and bottom of the run.

Existing horizontal handrail extensions that comply with 4 9 4 2 of the 1991 standards should meet or exceed the requirements of the. Handrails and aisle ramps for adults. What is the ada requirement for buildings with stairs. Stair risers the vertical sections must be a minimum of 4 inches tall and cannot exceed 7 inches tall.

Handrail gripping surfaces shall extend beyond and in the same direction of stair flights and ramp runs in accordance with 505 10. A minimum 12 inch 305 mm horizontal extension is required at each top riser indicated in the figure by the dimension x. Sections 505 10 2 and 505 10 3 of the 2010 standards require handrail extensions at both the top and bottom of a flight of stairs. A minimum 12 inch 305 mm horizontal extension plus the width of one tread is required at each bottom riser indicated by.

1 handrails shall be continuous along both sides of stairs. Extensions shall return to a wall guard or the landing surface or shall be continuous to the handrail of an adjacent stair flight. At each end the extension must return to a wall or the walking surface or continue to the handrail of an attached stair flight sections 505 10 2 and 505 10 3. Ada stair top handrail extension requirements 12 305 mm past top tread nose as shown above.

The requirement in the 1991 standards that handrails extend horizontally at least 12 inches beyond the width of one tread at the bottom of a stair was changed in the 2004 adaag by the access board in response to public comments.