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What is the minimum floor and roof opening width above grade in open malls?

  1. 8 feet

  2. 10 feet

  3. 20 feet

  4. 60 feet

The correct answer is: 20 feet

The requirement for a minimum opening width above grade in open malls is established to ensure adequate access and visibility in these spaces. A width of 20 feet for both floor and roof openings allows for the effective movement of air and light, contributing to the overall design and functionality of the mall. This dimension supports the integration of outdoor and indoor environments, promoting a pleasant experience for shoppers and visitors. While narrower openings could impede these qualities, the 20-foot standard strikes a balance between utility and aesthetic appeal. It also accommodates various activities and layouts that may occur within the mall, ensuring that larger retail spaces and movement corridors are viable. As such, this minimum width helps ensure safety, accessibility, and a comfortable environment for the public.