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What is the minimum length of the landing on either side of an exterior door?

  1. 20 in

  2. 24 in

  3. 36 in

  4. 48 in

The correct answer is: 36 in

The minimum length of the landing on either side of an exterior door is established to ensure safety and accessibility. A landing that is at least 36 inches in length provides sufficient space for people to safely enter and exit the building, accommodating natural foot traffic flow and providing enough room for individuals to maneuver, especially in emergency situations. This dimension helps prevent crowding at the entrance, allows for easier movement of objects like furniture, and supports accessibility for individuals using mobility aids. This requirement aligns with building codes that aim to promote the safety and usability of structures. Other options present shorter landing lengths, which would not provide the same level of safety or functionality, particularly in busy environments or for individuals with mobility challenges.