What is the required depth of grease duct reservoirs?

The correct answer is based on the North Carolina Mechanical Code, which specifically outlines the requirements for grease duct reservoirs. The required depth of grease duct reservoirs is designed to ensure that there is sufficient capacity for collecting and trapping grease that may accumulate within the ventilation system. A one-inch depth is specified as adequate to manage grease effectively, helping to minimize the risk of fire hazards associated with grease buildup.

This regulation is critical for maintaining safety in commercial kitchens and other facilities where cooking takes place, as it reduces the chance of grease igniting within the ductwork. In addition, the one-inch depth facilitates proper maintenance and cleaning procedures, allowing for easier removal of collected grease and thereby promoting better airflow and system efficiency.

The incorrect options do not meet the specified requirements outlined in the code, as depths less than one inch would not provide sufficient capacity for grease accumulation, potentially leading to safety issues. Likewise, options greater than one inch may exceed what is necessary for effective collection, potentially leading to unnecessary complications in design and maintenance.