In January, the U.S. witnessed two large-scale fires. While there isn’t one answer to why these tragedies occurred, we do know that people living in high rise or multi-story apartments and condominiums face different fire safety challenges than people living in single family homes.
High-rise design challenges and features
Protecting people who live and work in high-rise buildings has evolved over the years. These buildings’ designs include very specific sets of precautions that incorporate the most effective means of fire protection.
Occupied floors located high above the ground present many serious challenges for fire and life safety, such as:
- Fire and smoke tend to spread vertically because of the buoyant nature of the heat produced during a fire. Buildings with occupied levels above a fire floor pose a significant danger if the fire is not extinguished quickly.
- It can be difficult to evacuate large numbers of people from elevated floors, resulting in longer evacuation times and challenges for first responders trying to reach the elevated floors.
- Fire department aerial apparatus can only access a limited number of floors from the ground, complicating firefighting operations.
For these reasons, modern high-rise buildings are required to incorporate several design features that limit the likelihood of fire, quickly detect, and suppress fires that occur, and protect occupants during an evacuation. Features generally required include:
- Fire-rated compartmentation;
- Noncombustible construction;
- Fire alarm systems, including fire department communications systems;
- Automatic fire sprinklers;
- Smoke control systems; and
- Multiple fire- and smoke-protected exit stairs.
Very tall buildings, typically ones greater than 420 feet in height, are required to have an additional stairway.
Safety messages to share
Occupants need to be familiar with their building layout and the design of the building’s safety systems. Share the following safety messages to help them plan for an emergency:
- Always familiarize yourself with the fire safety features in a building, especially the locations of exits.
- Practice your exit route. Make sure exits are not blocked.
- Do not chock or prop stairway or corridor doors open.
- Remember to close doors when you leave the room.
- Report nonfunctioning or damaged fire protection features, such as an automatic door closer.
- Do not tamper with life safety devices.
- In the event of a fire, stay calm and follow the plan. Call 911 for help.
If a fire occurs
- Quickly and safely proceed to the nearest exit stair and close any doors behind you. Do not use elevators during a fire as they may become disabled or be secured by first responders for their operations and rescues.
- Shout “fire” or pull the fire alarm as you make your way to the nearest exit.
- Close the stair or corridor door(s) to help ensure that smoke and fire do not fill the stairwell or corridor and make it difficult to use. Most stair enclosures are constructed of fire-resistant walls and doors and have mechanical pressurization systems that blow outside air into the stairwell. These systems work best with doors closed.
- Continue down the stairs until you reach the ground floor and fully exit the building. In some cases, exit stairs will discharge to a lobby space. If so, quickly locate the nearest exit to the outside.
- Call 911. Notify any building staff that you encounter of the fire so they can take appropriate preplanned actions or assist fire and emergency medical services when they arrive.
If a person cannot self-evacuate or use the stairs, they should call 911 for help and be prepared to shelter in place. Sheltering in place may mean sheltering within an individual room with the door closed and using a wet towel to seal the cracks around the door. In some cases, people with limited mobility can get to the nearest exit stair. If it is clear or nearly clear of smoke, they can wait on the stair landing for assistance.
This article first appeared in the monthly Individual and Community Preparedness Newsletter. Subscribe here
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