What is the significance of calculating the total CFM exhausted in a ventilation system?

Calculating the total CFM (Cubic Feet per Minute) exhausted in a ventilation system is crucial for verifying compliance with health and safety regulations. Proper ventilation is essential to ensure a safe indoor environment, as it helps to control pollutants, moisture, and overall air quality. Regulatory bodies often set specific guidelines for ventilation rates to maintain acceptable levels of indoor air quality and protect the health of occupants. By determining the total CFM exhausted, architects and engineers can ensure that the system meets these requirements, thereby ensuring a safe and healthy environment. Compliance with these regulations can also prevent potential legal liabilities associated with inadequate ventilation, making this calculation a key part of effective building design and operation.