Residential · IRC 2021 §R311.3.1
Exterior Door Threshold Drop
At the required egress door the landing or floor may be no more than 1½ in below the top of the threshold; 7¾ in on the exterior side if the door does not swing over it. Not at grade: ramp or stair.. Referenced to IRC 2021 §R311.3.1.
The rest of Exterior Door Threshold Drop is for members
You're reading the opening of Exterior Door Threshold Drop. Members see the complete text, every cross-reference and the tools on this page — free for 14 days, no card required.
- The annotated detail diagram with dimension callouts
- The code section it illustrates, in full
- Related diagrams in the same category
- Download and insert into a project
No card required. After the 14-day trial, plans start at $29/mo.
Our previews are real data — live counts, no placeholders. We publish our error log →