Which structural feature is given as an example of a survivor location within collapse access corridors?

• A. Stairwells
• B. Doorways
• C. Elevator shafts
• D. Roof vents

Answer: (C)

When rescuers create collapse access corridors, they focus on locating survivable voids that can protect a person and provide a route to move between floors. Elevator shafts are ideal as an example because they are vertical voids that cut through multiple levels, often remaining as a relatively clear, air-accessible channel even when surrounding floors are compromised. A survivor may be found in or near the shaft car or within the shaft itself, using it as a refuge from debris and as a potential path to higher or lower floors. This vertical, interior conduit is a recognizable survivable location inside collapse zones, making elevator shafts the best example in this context. Stairwells and doorways can become buried or blocked by debris, and roof vents are not typically part of the interior collapse access corridors, which is why elevator shafts are highlighted as the survivor location in this scenario.