Which measurement interval is specified for baseline measurements in ISO 9972:2015?

Prepare for the ABAA Whole-Building Airtightness Testing Level 1. Master the concepts with various study materials including flashcards and practice questions. Get ready to ace your exam effortlessly!

The measurement interval specified for baseline measurements in ISO 9972:2015 is 30 seconds. This interval is crucial as it allows for the collection of stable and representative data during the testing process. A consistent measurement interval ensures that the readings taken reflect the actual airtightness of the building under the conditions specified in the standard.

Using a 30-second interval strikes a balance between capturing sufficient data without causing an excessive burden on the testing process. Longer intervals, such as 60 or 120 seconds, could potentially delay the overall testing time without significantly enhancing data quality. In contrast, shorter intervals, such as 15 seconds, may not provide enough time for fluctuations to stabilize, resulting in less reliable readings. Overall, adhering to the 30-second baseline measurement interval aligns with the standard's goal to ensure accurate and reproducible airtightness assessments.

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