What is the maximum threshold height for doors other than sliding doors?

What is the maximum threshold height for doors other than sliding doors?

• A. 1/2 inch
• B. 1/4 inch
• C. 3/4 inch
• D. 1 inch

Answer: (A)

In accessibility-minded design, thresholds should be low enough to let a wheelchair or walker pass smoothly and to reduce tripping hazards. For doors that are not sliding, the maximum threshold height allowed is one-half inch, with the edge beveled so the transition is easy to traverse. If a higher transition is ever needed, it should be addressed with a ramp or a proper bevel to keep the change in level as gentle as possible while staying within standards. So the greatest allowable height for non-sliding doors is half an inch. The other heights would either create an obstacle (3/4 inch or 1 inch) or are simply lower than the maximum (1/4 inch) but do not represent the upper limit.

In accessibility-minded design, thresholds should be low enough to let a wheelchair or walker pass smoothly and to reduce tripping hazards. For doors that are not sliding, the maximum threshold height allowed is one-half inch, with the edge beveled so the transition is easy to traverse. If a higher transition is ever needed, it should be addressed with a ramp or a proper bevel to keep the change in level as gentle as possible while staying within standards. So the greatest allowable height for non-sliding doors is half an inch. The other heights would either create an obstacle (3/4 inch or 1 inch) or are simply lower than the maximum (1/4 inch) but do not represent the upper limit.