This document is a calculation sheet for analyzing acoustic downduct systems. It provides details on fan specifications, duct attenuation, room characteristics, and sound pressure level calculations. Recommended maximum air velocities for different ductwork components are also provided based on Perceived Noise Criteria (PNC) levels.
This document is a calculation sheet for analyzing acoustic downduct systems. It provides details on fan specifications, duct attenuation, room characteristics, and sound pressure level calculations. Recommended maximum air velocities for different ductwork components are also provided based on Perceived Noise Criteria (PNC) levels.
This document is a calculation sheet for analyzing acoustic downduct systems. It provides details on fan specifications, duct attenuation, room characteristics, and sound pressure level calculations. Recommended maximum air velocities for different ductwork components are also provided based on Perceived Noise Criteria (PNC) levels.
This document is a calculation sheet for analyzing acoustic downduct systems. It provides details on fan specifications, duct attenuation, room characteristics, and sound pressure level calculations. Recommended maximum air velocities for different ductwork components are also provided based on Perceived Noise Criteria (PNC) levels.