CSLB Class B General Contractor's License Practice Exam

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Prepare for the CSLB Class B General Contractor's License Test with interactive flashcards and multiple choice questions. Each question offers hints and explanations to enhance your understanding and readiness for the exam.

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When installing support bracing for exhaust ventilation systems, what is the maximum distance allowed between support braces for 8" ducts?

10 feet
8 feet
6 feet
12 feet

The correct answer is: 12 feet

The maximum distance allowed between support braces for 8" ducts is 12 feet. This distance is specified to ensure that the ducts are adequately supported, preventing sagging or misalignment that could affect the performance of the exhaust ventilation system. Proper support is essential for maintaining airflow efficiency and preventing damage to the ductwork. In practice, if support braces are placed too far apart, the ducts may not remain properly aligned, which can lead to air leaks or increased resistance to airflow. The 12-foot standard is established by building codes and industry best practices to strike a balance between structural support and practicality in installation. It is important to know these specifications as a general contractor, as they directly relate to the safety and efficiency of HVAC systems. Understanding these requirements helps to ensure compliance with local codes and safeguards against potential issues that may arise from improper duct installation.