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Re: Code question - safety glazing
Michael,
That drawing has three errors, all related to each other but located in different places.
Starting at the bottom landing: The 36" shown is the minimum for a 36" minimum width stairway. However, if the stairway is wider than 36", the depth of the landing in the direction of travel (the 36" shown) must be at least that of the stairway.
As an example, let us presume that the width of the stair is 38". In that case, that 36" shown must now be 38", not 36".
Now go up to the 36" shown under the right window at the intermediate landing. The same thing I just stated above applies to that 36" dimension.
Now go up to the upper landing. The same thing applies there too.
Thus, at the upper landing, the area shown as 36" + 36" would be (for a stairway which is 38" wide) 36" + 38".
The limitation on the depth of a landing being the width of the stairs is for straight stairs, and the depth of a landing for a straight stair need not exceed 48". That straight stair exception means, to me, that for the stairway shown, the bottom landing (and all landings) would not need to exceed 48" even if that stair was 60" wide. This is because it is separated into two flights of stairs and each flight of stairs is a "straight stair".
If that were a curving stair (winders all the way), then the depth of the landing is the width of the stair, no maximum depth limitation. 60" wide curving stair requires a 60" deep landing.
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