True or False: Notches in solid lumber joists should not exceed one-third the depth of the member.

The statement that notches in solid lumber joists should not exceed one-third the depth of the member is true. This guideline is based on structural integrity principles. When notches exceed this limitation, they can significantly weaken the joist, leading to potential structural failure. The one-third depth rule is designed to ensure that there is sufficient material remaining to maintain the load-bearing capacity and overall performance of the joist.

Exceeding the one-third depth can create vulnerabilities where the joist may not perform adequately, especially under load, potentially leading to bending or breaking. The rule is part of the broader set of engineering standards and practices that govern how wood framing is constructed safely and effectively to prevent hazards.

Ultimately, adhering to these guidelines is essential for ensuring that the structural components of a building remain strong and resilient over time.