This guide will help you determine the required ADA stair landing width and length that will also accommodate door swing and an area of refuge. We refer to the International Building Code (IBC) which is required for new construction, because it also covers ADA landing requirements.

ADA Stair Landings

– A landing must be at the top and bottom of each stairway.

– A landing is required every 12′ of vertical stairway rise.

– The landing should be at least as wide as the stairway that it serves. How wide does my stairway need to be?

– The length (measured in the direction of travel) should be greater or equal to the width. For a stairway that has a straight run through a platform, the platform does not need to exceed 48″ in length.

– The landing surface should not be sloped steeper than 1:48 in any direction.

ADA Stair Landings with Doors:

– Landings should be at least as wide as the stairway or the door, whichever is greater.

– When a landing serves an occupant load of 50 or more, doors in any position should not reduce the landing size to less than 1/2 the required width.

– When the door is fully open, it should not project more than 7″ into the required minimum landing dimensions.

minimum-landing-dimensions-over-50-occupants
*Required when the stairway serves more than 50 occupants

ADA Stair Landings that Require Area of Refuge:

– If the stairway requires an area of refuge, you must have a 30″ x 48″ space for every 200 occupants.

– Access to any of the required wheelchair spaces in an area of refuge cannot be obstructed by more than one adjoining wheelchair space.

– The area of refuge cannot overlap the required width of the landing.

– The door swing cannot overlap the area of refuge.

area-of-refuge-diagram

Sources:

IBC Chapter 10 Means of Egress

  • 1009.3 Accessible Means of Egress: Stairways
  • 1010.1.6 Doors, Gates, and Turnstiles: Landings at Doors
  • 1011.2 Stairways: Width and Capacity
  • 1011.6 Stairways: Stairway Landings
  • 1011.8 Stairways: Vertical Rise

Recent Posts

Start typing and press Enter to search

GET A QUOTE