A vision lite is provided in an accessible door for viewing. What maximum height applies to the bottom of at least one vision panel?
Correct Answer
A) 43 in. above the floor
Accessible door criteria place the bottom of at least one vision lite at 43 in. maximum above the floor when lites are provided for viewing, with exceptions for lites not intended for viewing. Other choices are not the accessibility viewing height.
Why This Is the Correct Answer
Accessible door criteria place the bottom of at least one vision lite at 43 in. maximum above the floor when lites are provided for viewing, with exceptions for lites not intended for viewing. Other choices are not the accessibility viewing height.
Why the Other Options Are Wrong
Option B: 38 in. above the floor
In doors, windows, and glazing, 38 in. above the floor is the wrong selection for Vision lite height: 38 in. above the floor is a different published number than the cited Vision lite height value; ICC A117.1-2017 Section 404.2.10 vision lites supports 43 in.
Option C: 48 in. above the floor
The trap in C is 48 in. above the floor. That selection is wrong because 48 in. above the floor is a different published number than the cited Vision lite height value; ICC A117.1-2017 Section 404.2.10 vision lites supports 43 in.
Option D: 60 in. above the floor
Choice D gives 60 in. above the floor. Its specific error: 60 in. above the floor is a different published number than the cited Vision lite height value; ICC A117.1-2017 Section 404.2.10 vision lites supports 43 in.
Memory Technique
File vision lite height under a tab: condition first, number or duty second, answer 43 in. above the floor.
Reference Hint
Open ICC A117.1-2017 Accessible and Usable Buildings and Facilities; use ICC A117.1-2017 Section 404.2.10 vision lites to confirm that Accessible door criteria place the bottom of at least one vision lite at 43 in.
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