|
Re: Exterior Door Landing
Originally Posted by Michael Thomas
Door A is off living room.
The tops of both thresholds are 2.5" above their landings.
Have I got this right:
1) Door A is the "required exit door".
2) The 2.5" from top of threshold to landing height of the required exit door is non -compliant with R311.4.3 (too high).
You've missed Exception 2 (assuming the door swings inward and not outward).
From the 2006 IRC. (bold and underlining are mine)
- R311.4.3 Landings at doors. There shall be a floor or landing on each side of each exterior door. The floor or landing at the exterior door shall not be more than 1.5 inches (38 mm) lower than the top of the threshold. The landing shall be permitted to have a slope not to exceed 0.25 unit vertical in 12 units horizontal (2-percent).
- - Exceptions:
- - - 1. Where a stairway of two or fewer risers is located on the exterior side of a door, other than the required exit door, a landing is not required for the exterior side of the door provided the door, other than an exterior storm or screen door does not swing over the stairway.
- - - 2. The exterior landing at an exterior doorway shall not be more than 7 3/4 inches (196 mm) below the top of the threshold, provided the door, other than an exterior storm or screen door does not swing over the landing.
- - - 3. The height of floors at exterior doors other than the exit door required by Section R311.4.1 shall not be more than 7 3/4 inches (186 mm) lower than the top of the threshold. |