North Carolina Building Contractor License Practice Exam

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What is the maximum notch at the ends of rafters and ceiling joists?

3 feet
5 feet
6 feet
8 feet

The correct answer is: 6 feet

The maximum allowable notch at the ends of rafters and ceiling joists is 6 inches. This regulation is in place to ensure the structural integrity of the wooden members while still allowing for necessary adjustments during the installation process. Notching at the ends can potentially weaken these members, so codes limit the depth of notching to prevent significant reduction in their load-bearing capacity. This standard is based on building codes and best practices that account for the distribution of loads throughout a structure. By limiting the notch size, builders can help maintain the strength and safety of the framing system. Understanding these regulations is crucial for builders to ensure compliance with local codes and to uphold the safety and durability of the constructions they undertake.