CodeMandatory
Door swing arc clear of stair shaft
FIX-DOOR-SWING-COLLISION-01Description
Front doors and other exterior doors must have at least 36 inches of unobstructed swing arc. A front door that swings directly into a stair blocks the primary egress path.
Why this exists
Front door (and exterior doors) must have at least 36 in of unobstructed swing arc. A door swinging into a stair tread blocks the primary egress path.
Categories
CirculationEgress
Source
ICCno manifest entry
International Residential Code (2024)
Section: R311.7.5
Published 2026-05-09 · last verified 2026-05-09
Solver enforcement
The constraint solver runs check function fix-door-swing-collision-01 as a hard constraint — layouts that fail are rejected outright.
Related directives
- Egress window net opening dimensions · IRC R310.2
- Stair riser, tread, and headroom · IRC R311.7
- Stairway illumination · IRC R303.6
- Stairway and ramp area lighting · IRC R303.7
- Emergency escape and rescue openings required · IRC R310.1
Last reviewed 2026-05-09.