What Is Egress in Building Code?
Egress is the code's term for safe exit — the continuous, unobstructed path from anywhere inside a building to the outside, running through doors, corridors, stairs, and exit discharge.
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The three parts
Code breaks egress into exit access (the path from any point to an exit door), the exit itself (protected stairs, corridors, or exterior doors), and exit discharge (from the exit to a public way). All three must work together — a well-built stairwell means nothing if the corridor leading to it is blocked.
What the code controls
Number of exits (larger and higher-occupancy spaces need two or more), maximum travel distance to an exit, corridor and stair widths based on occupant load, exit signage and emergency lighting, and door hardware that always allows free exit. These rules shape floor plans more than most owners expect.
Why it drives design
Egress requirements often determine a building's layout before aesthetics get a vote: where stairs go, how wide corridors are, whether a space needs a second door. Sorting egress early with the architect and code review prevents the painful redesign of moving a stair tower late in the game.
The bottom line
Egress is life safety expressed as floor plan. Understand the exit count, travel distances, and widths for your occupancy before the design is locked.