Originally Posted by
Bob White
gotta be at least 20" wide, right? (the opening, that is....)
It's also only 4 sq ft instead of 5 sq ft opening size.
What was the measured width of the stair treads between the rails? 36" minimum, I hope.
What about the riser height and the tread depth?
Just way to many things to go wrong there, and the two you've provided measurements on are both wrong ... so there is no way to make the rest 'right', even if the stair is 'wide enough' and the risers and treads 'are correct', that does not offset the fact that the width and size are both too small.
Add to that, if that room is 12' x 12', the opening size needs to be 5.76 sf just to met minimum natural ventilation.
And twice that for minimum natural light, twice 5.76 = 11.52, and twice the opening size of 4 = 8,
So not we have (if that room is 12' x 12') four things wrong - MINIMUM - with that window.