Florida Building Code Practice Exam

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What is the minimum clear tread depth required between the foremost projection of adjacent treads in curved stairways?

6"
7-1/2"
11"
12"

The correct answer is: 11"

The minimum clear tread depth required between the foremost projection of adjacent treads in curved stairways is 11 inches. This requirement ensures that there is adequate space for safe foot placement as users navigate the curved stairs, minimizing the risk of missteps and falls. By specifying this measurement, the building code aims to enhance user safety and accessibility, particularly in areas where space may be constrained but proper functionality is crucial. Curved stairways often present unique challenges, as the tighter radii can lead to narrower tread widths. The 11-inch requirement balances these factors, providing a sufficient tread depth for users while adhering to safety standards. In contrast, options like 6 inches, 7-1/2 inches, and 12 inches do not meet the specified criteria for tread depth, either being insufficient or excessive for ensuring safety on curved stairways.