A diagnostic test that measures the airtightness of a building. A calibrated fan is used to depressurise or pressurise the building, and the resulting airflow is measured to determine the air leakage rate.
Decibel (dB) Scale
The Decibel (dB) Scale is a logarithmic unit used to measure the intensity of sound, among other things. It quantifies sound levels, making it an essential tool in acoustics, telecommunications, and various scientific fields.