Is it true that the standard ASTM E779 - 19 is limited to single zone testing?

Is it true that the standard ASTM E779 - 19 is limited to single zone testing?

• A. True
• B. False
• C. Not applicable
• D. Only in specific cases

Answer: (A)

The statement is true because ASTM E779-19 specifically addresses the methodology for conducting air leakage tests on buildings using the single-zone (or single-point) testing approach. This standard outlines how to measure air leakage in a defined volume of a building using pressurization or depressurization techniques. While single-zone testing is the primary focus of ASTM E779-19, it’s important to note that for complex buildings with multiple zones or different air pressure characteristics, other standards or methodologies may be employed to accurately assess airtightness throughout the entire structure. Understanding the limitations of the standard helps in determining when additional testing approaches are necessary.

The statement is true because ASTM E779-19 specifically addresses the methodology for conducting air leakage tests on buildings using the single-zone (or single-point) testing approach. This standard outlines how to measure air leakage in a defined volume of a building using pressurization or depressurization techniques.

While single-zone testing is the primary focus of ASTM E779-19, it’s important to note that for complex buildings with multiple zones or different air pressure characteristics, other standards or methodologies may be employed to accurately assess airtightness throughout the entire structure. Understanding the limitations of the standard helps in determining when additional testing approaches are necessary.