1622 E MARINE VIEW DR BUILDING J 2022-08-29

Riverview J I WSEC Air Barrier Testing Report Report Glossary air-leakage*, n-the movement/flow of air through the building envelope,which is driven by either or both positive (infiltration)and negative(exfiltration)pressure differences across the envelope. air-leakage rate*,n-the volume of air movement/unit time across the building envelope including airflow through joints, cracks, and porous surfaces, or a combination thereof driven by mechanical pressurization and depressurization, natural wind pressures,or air temperature differentials between the building interior and the outdoors,or a combination thereof. building envelope*, n-the boundary or barrier separating different environmental conditions within a building and from the outside environment. effective leakage area*,n-the area of a hole,with a discharge coefficient of 1.0,which,with a 75 Pa pressure difference, leaks the same as the building,also known as the sum of the unintentional openings in the structure. flow coefficient, n-the constant parameter of the power law equation that relates flow to differential pressure across a building envelope.It represents the theoretical flow rate that exists at a differential pressure of 1 Pa. pressure exponent, n -the exponent applied to the pressure parameter of the power law equation that relates flow to differential pressure across a building envelope.The exponent is a value between 0 and 1 that is indicative of how turbulent the air flow is.A value of 1 represents totally laminar flow. * Definition as given in ASTM E779-15 Standard Method for Determining Air Leakage Rate by Fan Pressurization. Page 8 ) 8