Traditionally, collapse zones have been estimated by multiplying the height of the structure by a factor of which value?

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Multiple Choice

Traditionally, collapse zones have been estimated by multiplying the height of the structure by a factor of which value?

Explanation:
Collapse zones are the area you need to stay clear of during a potential structure collapse to avoid being hit by falling debris. The standard rule of thumb is to set the collapse zone at one and a half times the building’s height. That extra 50% accounts for debris that can fall, spread, or slide outward beyond the base, and for secondary collapses that push rubble farther than the original footprint. For example, a building 40 feet tall would require about 60 feet of safe zone. Using only the height of the building would underestimate how far debris can travel, while doubling the height is more conservative than necessary in typical collapses, and halving the height would be far too small to protect crews.

Collapse zones are the area you need to stay clear of during a potential structure collapse to avoid being hit by falling debris. The standard rule of thumb is to set the collapse zone at one and a half times the building’s height. That extra 50% accounts for debris that can fall, spread, or slide outward beyond the base, and for secondary collapses that push rubble farther than the original footprint. For example, a building 40 feet tall would require about 60 feet of safe zone. Using only the height of the building would underestimate how far debris can travel, while doubling the height is more conservative than necessary in typical collapses, and halving the height would be far too small to protect crews.

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