Which method is commonly used to determine the gauge thickness for round ductwork?

The method commonly used to determine the gauge thickness for round ductwork is based on industry codes. These codes establish standardized practices for various aspects of HVAC design, installation, and maintenance, including duct sizing and material specifications. They take into account factors such as the intended use of the duct, the airflow it will carry, and the associated pressures.

By adhering to these industry standards, HVAC professionals ensure safety, efficiency, and compatibility with existing systems. Using industry codes provides a reliable framework for selecting the appropriate duct gauge, which is crucial for durability and performance while minimizing the risk of failure due to over or under-sizing.