What is the minimum number of members needed for a Single Family Residence?

• A. Two
• B. Three
• C. Four
• D. Five

Answer: (B)

Opening the structure to vertical ventilation in a single-family residence requires coordinated exterior teamwork to safely release heat and smoke while keeping interior operations protected. The minimum crew is three. One member leads the roof operation and handles the cutting or opening task, another assists with tools, debris, and positioning to ensure the opening is controlled and safe, and a third stays outside to supervise, relay information to interior crews, and adjust exterior conditions as needed. With only two, you lose a dedicated outside observer and a second helper for tool handling, increasing risk of an unstable roof, uncontrolled flow, or miscommunication. Three people provide the necessary balance of execution, safety, and coordination for an effective, safer ventilation operation.