True or False: ASTM E779 and ISO 9972 are ideal for use with large buildings.

The statement is assessed as false because ASTM E779 and ISO 9972 are both recognized standards for measuring airtightness but they are not strictly limited to large buildings. These standards can be used for a variety of building sizes, provided that the testing conditions and methods are appropriately applied.

ASTM E779 focuses on the measurement of air leakage rates in buildings and is applicable to commercial, residential, and industrial structures. Similarly, ISO 9972 is used internationally to determine the airflow through a building's envelope.

While these standards can be applied to large buildings, it is essential that the specific protocols and conditions outlined in the standards are adhered to in any building type to yield meaningful results. Thus, stating that these standards are ideal for only large buildings does not accurately represent their versatility and applicability across different building types and sizes.