In a flood response at a door, which action is recommended?

• A. Brace door
• B. Close door
• C. Brace door, close shoring
• D. Patch door

Answer: (C)

Blocking a doorway against floodwaters relies on both securing the door and reinforcing the doorway itself. When floodwaters push on a door, hydrostatic pressure tries to force it open or buckle the frame. Bracing the door prevents it from moving or collapsing, while applying shoring around the opening reinforces the frame so it can withstand that pressure. Together, these actions keep the doorway as a solid barrier and minimize water entry between compartments. Simply closing the door reduces flow but doesn’t resist the structural load, and patching isn’t a rapid, effective defense at a flood doorway.