In high-rise life-safety design, what combination of features supports safe evacuation and firefighter operations?

• A. Egress design, fire service access, compartmentation, and smoke control.
• B. Decorative lighting and exterior color
• C. Elevator-only evacuation
• D. No doors to allow free movement

Answer: (B)

In high-rise life-safety design, safe evacuation and firefighter operations rely on combining four interdependent features: a well-planned egress design that provides protected, clearly directed paths to safety; robust fire service access so firefighters can reach the fire floors quickly with the necessary equipment; compartmentation using fire-resistive barriers to contain fires and limit their spread; and effective smoke control to manage smoke movement, keep stairs and assembly spaces tenable, and support both occupants and first responders. The other options don’t support these critical goals: decorative lighting and exterior color affect aesthetics rather than life-safety performance; elevator-only evacuation is unsafe for occupants during most fires and not relied upon for general evacuation; and having no doors eliminates compartmentation and smoke control, allowing rapid fire and smoke spread that jeopardizes both evacuation routes and firefighting operations.