Which ASTM standard addresses measuring the air leakage rate of a large building?

The correct choice is based on the fact that ASTM E3158 specifically outlines the methodology for testing and determining the air leakage rate of large buildings. This standard is crucial for evaluating the performance of air barrier systems, ensuring that buildings are airtight to meet efficiency and comfort standards.

ASTM E3158 provides a comprehensive framework that includes the necessary procedures for conducting air leakage tests at various pressure differentials, which is essential for large buildings where air leakage can significantly impact energy consumption, indoor air quality, and overall building performance. By using this standard, professionals can ensure that they follow the appropriate guidelines for measuring air leakage in a consistent and reliable manner, which is vital for achieving compliance with building codes and performance expectations.

The other ASTM standards listed focus on different aspects of air barriers or building performance and do not specifically address large buildings in terms of air leakage evaluation. Therefore, they are not suitable for this particular context of measuring air leakage rates in large structures.