What are the baseline reading requirements according to USACE 2012?

The baseline reading requirements according to USACE 2012 stipulate that data should be collected at 12 points with a sampling interval of 10 seconds. This frequency and number of readings are essential to ensure that the data gathered during the whole-building airtightness test is both reliable and representative of the building's performance. The choice of 10-second intervals helps in capturing fluctuations in pressure readings that might occur in a shorter timeframe, providing a more accurate picture of the airtightness of the structure.

Accurate data collection at these specified intervals is vital for analyzing how the building responds to pressure changes, which is a key aspect of evaluating its airtightness and, by extension, its energy efficiency.