Florida Building Code Practice Exam

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Notches allowing pipe passage in floor joists should not exceed what fraction of the joist's depth?

One-sixth
One-quarter
One-third
One-half

The correct answer is: One-sixth

The correct answer is that notches allowing pipe passage in floor joists should not exceed one-sixth of the joist's depth. This guideline is established to maintain the structural integrity of the joists. When notches are cut into joists, particularly if they are too deep, they can significantly weaken the joist's ability to bear loads. Limiting the depth of these notches helps ensure that the joist can adequately support the weight it is designed for, preserving the overall safety and stability of the structure. The other options suggest greater allowances for notching, which could compromise the load-bearing capacity of the joists. Adhering to the one-sixth limitation is crucial for maintaining compliance with building codes and engineering principles designed to protect the structure and its occupants.