When building collapse is a possibility, trucks should be placed a minimum distance equal to how many times the building's height?

When building collapse is a possibility, trucks should be placed a minimum distance equal to how many times the building's height?

• A. One-half the height of the building
• B. One and a half times the height of the building
• C. Three times the height of the building
• D. Twice the height of the building

Answer: (B)

When a building collapse is a possibility, you must place apparatus and personnel outside the area where debris could reach them. The safe distance scales with the building’s height, and the standard margin used for trucks is 1.5 times the building height. This 1.5x rule accounts for debris travel in various collapse scenarios, including outward projection of blocks and the unpredictable way a structure can fail, giving a conservative buffer so falling material is less likely to strike the apparatus. For example, if the building is 60 feet tall, the trucks should be placed at least 90 feet away. This baseline distance helps keep operations safer, and can be increased if conditions demand more protection.

When a building collapse is a possibility, you must place apparatus and personnel outside the area where debris could reach them. The safe distance scales with the building’s height, and the standard margin used for trucks is 1.5 times the building height. This 1.5x rule accounts for debris travel in various collapse scenarios, including outward projection of blocks and the unpredictable way a structure can fail, giving a conservative buffer so falling material is less likely to strike the apparatus. For example, if the building is 60 feet tall, the trucks should be placed at least 90 feet away. This baseline distance helps keep operations safer, and can be increased if conditions demand more protection.