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Tech Notes: Meeting the Accessibility Criteria for Horizontal Exit Doors

Getting out of a building during a smoke or fire event can be traumatic for anyone. But, just imagine how traumatic it can be for a person who uses an assistive device, such as a wheelchair? If proper maneuvering clearance is not provided at doorways, then a person can become trapped.

Building code requirements for accessible means of egress have been developed to ensure that people with disabilities can exit buildings safely in the event of a fire. These requirements, found in chapter 10 of the International Building Code (IBC), establish proper maneuvering clearances at certain doors to safeguard against the potential for entrapment. Horizontal exit doors are an example of such doors.

Horizontal Exit Doors

horizontal exitWe’ve all seen them; in a hospital corridor, at the school cafeteria, or near the elevator lobby in a high-rise apartment building. They are doors that are held open most commonly by magnetic locks, which are connected to the building’s fire alarm system. When the building’s fire alarm is triggered, the magnetic hold-open device releases, and the doors close to contain smoke and flames.

 

The 2015 IBC defines a horizontal exit as:

“An exit component consisting of fire-resistance-rated construction and opening protectives intended to compartmentalize portions of a building thereby creating refuge areas that afford safety from the fire and smoke from the area of fire origin.”

 

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Tech Notes: Universal Design v. Accessible Design

“Isn’t Universal Design just a different term for Accessible Design?” We hear this from architects and designers a lot. While similarities exist, Accessible Design and Universal Design are actually quite different.

outlets, switches, env controls

This image depicts the prescriptive Accessible Design requirements for light switches and operable parts under the Fair Housing Act. Unlike Universal Design, Accessible Design is not intended to be flexible, with little or no room for tolerance.

The term “Accessible Design” typically refers to compliance with Federal accessibility laws and state and local building codes; including the Americans with Disabilities Act and the Fair Housing Act, among others. Accessible Design requirements are based on anthropometric research – or the study of the human body – and are intended to address people with disabilities. Laws and codes that require compliance with Accessible Design requirements include little or no room for tolerance.

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