Section 404.1/Accessible Door Requirements
ADA 2010 Section 404 covers accessible door clear width, maneuvering clearances, hardware, closing speed, and threshold height.
Doors along accessible routes must provide a minimum 32-inch clear width with the door open 90 degrees. Maneuvering clearances on both sides of the door must meet the dimensions in Section 404.2.4 based on the approach direction (front, latch side, hinge side) and door type (push/pull, sliding). Door hardware must be operable with one hand without tight grasping, pinching, or twisting. Thresholds at accessible doors must not exceed 1/2 inch in height (1/4 inch vertical, remainder beveled).
Why this section exists
Doors are one of the most common barriers to accessibility. A wheelchair user needs adequate clear width to pass through, sufficient floor space on both sides to approach and maneuver the door, and hardware that can be operated without fine motor skills. These requirements are based on anthropometric data for wheelchair users and people with limited hand strength or dexterity.
What plan reviewers look for
Plan reviewers check the door schedule for clear width (32 inches minimum, which typically requires a 36-inch door) and hardware type (lever handles, not knobs). They verify maneuvering clearances at every door along the accessible route by checking the floor plan dimensions on both sides of each door. They also check threshold heights at exterior doors and transitions between flooring materials.
Common violations
Related ADA requirements
Section 404.2 covers the specific maneuvering clearance dimensions by approach type. Section 604 covers accessible toilet room requirements where door clearances are frequently violated. Section 206.2 covers which doors must be accessible. ANSI A117.1 Section 404.2 provides equivalent technical requirements referenced by the IBC.