What height is commonly used to define a high-rise building in many codes?

• A. 15 feet
• B. 75 feet
• C. 150 feet
• D. 300 feet

Answer: (B)

A high-rise is defined in many codes by a height threshold that triggers more robust fire protection and life-safety requirements. The commonly used cut-off is 75 feet above grade. This height roughly corresponds to about seven to eight stories, depending on floor-to-floor height, and once reached, buildings typically require features like standpipes, automatic sprinklers, enhanced fire department access, elevator recall or protected elevators, and more comprehensive evacuation and smoke control strategies. The other heights listed aren’t the standard threshold for high-rises in most codes, so 75 feet is the best fit.