Universal Design for Emergency Exits and Evacuation

An emergency evacuation plan that assumes everyone can walk down stairs is not a plan — it is a liability. People who use wheelchairs, have visual impairments, are deaf, or have cognitive disabilities face fundamentally different challenges during an emergency. Universal design addresses these challenges before the alarm sounds, not during the crisis.

This guide covers the building design features, code requirements, and operational strategies for emergency evacuation that serves all occupants.

Emergency egress requirements are governed by the International Building Code (IBC), NFPA 101 Life Safety Code, ADA Standards, and local fire codes. Requirements vary by building type, occupancy, and jurisdiction.

Alarm Systems

Multi-Sensory Alarms

An audible fire alarm means nothing to a person who is deaf. A flashing strobe means nothing to a person who is blind. Universal design requires both.

ADA and NFPA 72 (National Fire Alarm and Signaling Code) require:

Audible alarms at a minimum of 75 dBA or 15 dB above ambient noise, whichever is greater
Visual alarms (strobes) in all common areas and restrooms, with a flash rate of 1 to 2 Hz, a minimum intensity of 75 candela (in rooms up to 20 by 20 feet), and synchronized to prevent seizure triggers
Tactile notification devices (bed shakers, vibrating pagers) in sleeping areas such as hotel rooms, dormitories, and healthcare facilities

Voice Evacuation Systems

Modern fire alarm systems include voice evacuation capability — pre-recorded or live announcements that provide specific instructions (“proceed to the nearest stairwell,” “remain in your room”). Voice systems are more effective than tone-only alarms because they reduce confusion and provide actionable information. The voice must be clear, at a controlled pace, and supplemented with visual displays where possible.

Areas of Rescue Assistance (Areas of Refuge)

An area of rescue assistance is a protected space where a person who cannot use stairs can wait for emergency responders. The IBC requires areas of rescue assistance in buildings that are not fully sprinklered and have floors above or below the exit level that are not served by an accessible exit.

Design Requirements

Located adjacent to a stairwell on each floor
Protected by fire-rated construction (typically the same rating as the stairwell enclosure)
Large enough for at least two wheelchair spaces (30 by 48 inches each), plus clear access to the stairwell for ambulatory evacuees
Equipped with two-way communication (a phone or intercom connected to the fire command center or 911)
Clearly identified with illuminated signage visible from the corridor

Limitations

Areas of rescue assistance are a last resort, not a first choice. The goal of universal design is to provide direct accessible egress whenever possible. In fully sprinklered buildings, the IBC often waives the requirement for areas of rescue assistance — but universal design recommends providing them anyway as an added safety layer.

Accessible Exit Routes

Horizontal Exits

A horizontal exit leads through a fire-rated barrier into another part of the same building or an adjacent building. This allows evacuation to a safe zone on the same floor without using stairs. Horizontal exits are highly beneficial for wheelchair users and people with limited mobility.

Exterior Exit Balconies and Bridges

Covered exterior balconies and bridges connecting to adjacent structures or separate stairwell towers provide additional accessible egress paths.

Evacuation Elevators

Standard passenger elevators are not used during fire emergencies because they can malfunction, fill with smoke, or open on the fire floor. However, dedicated evacuation elevators (also called occupant evacuation elevators) are an emerging solution:

Protected by fire-rated lobbies on every floor
Supplied by emergency power
Controlled by the fire department or an automated evacuation system
Increasingly required or encouraged in high-rise buildings

Stairwell Evacuation Assistance

When stairs are the only egress path, assistance devices and protocols must be in place for people who cannot walk down stairs.

Evacuation Chairs

Evacuation chairs (also called stair descent devices) are lightweight chairs with tracks or wheels that allow a trained assistant to transport a person down stairs. They should be:

Stored on each floor, at the entrance to the stairwell, in a clearly marked cabinet
Maintained and inspected regularly
Accompanied by training for building staff (at least two trained operators per shift)

Stair Design for Evacuation

Minimum 44 inches wide (56 inches preferred for two-way traffic during evacuation)
Handrails on both sides, extending beyond the top and bottom of each flight
Visual contrast on stair nosings
Photoluminescent markings on stair nosings, handrails, and landing edges for visibility during power failure
Closed risers (no open gaps between treads)

Emergency Communication for People with Disabilities

Visual message boards at stairwell entries and areas of rescue assistance displaying real-time evacuation status
Text message and app-based alerts that supplement audible announcements for people who are deaf
Tactile evacuation maps at key locations showing the path to the nearest exit
Personal emergency response plans for employees or residents with disabilities, developed in advance and reviewed regularly

Outdoor Assembly Areas

Designated outdoor assembly areas after evacuation must be:

On an accessible route from all building exits
On a firm, level surface
Large enough to accommodate all building occupants, including wheelchair users
Clear of vehicular traffic and emergency vehicle access lanes

Key Takeaways

Multi-sensory alarm systems — audible, visual, and tactile — ensure that all occupants are alerted during an emergency.
Areas of rescue assistance provide protected waiting spaces with two-way communication for people who cannot use stairs.
Horizontal exits, evacuation elevators, and exterior balconies provide accessible egress paths that do not depend on stairs.
Evacuation chairs, properly stored and supported by trained staff, address stair descent for non-ambulatory occupants.
Pre-planned personal emergency response plans for occupants with disabilities are as important as the building’s physical features.

For the complete framework, see the Universal Design in Buildings and Architecture Guide. For staircase design, see Accessible Staircase Design and Handrails.

Sources

2010 ADA Standards for Accessible Design — U.S. Department of Justice
NFPA 101: Life Safety Code — National Fire Protection Association
Guide to the ADA Standards — U.S. Access Board