For stairs used as means of egress, the vertical rise between floor levels or landings should not exceed what height?

• A. 10 feet
• B. 11 feet 6 inches
• C. 12 feet
• D. 12 feet 6 inches

Answer: (C)

For stairs used as means of egress, the vertical rise between floor levels or landings should not exceed 12 feet. This measurement is established in building codes to ensure safety and accessibility during emergencies, where quick and efficient evacuations are paramount. Limiting the height of the rise helps ensure that the stairs are not too steep or difficult to navigate, particularly for individuals who may have mobility issues or in situations where panic may interfere with movement. By maintaining a maximum rise of 12 feet, the code facilitates safer evacuation routes, ensuring that occupants can quickly and securely move between different levels.

The other options represent heights that exceed what is deemed acceptable according to the code, which could pose significant risks during egress scenarios. Keeping stair rises below the 12-foot threshold helps to prevent accidents and injuries, further underscoring the importance of compliance with the building code requirements.