I'm trying to find out how many blower door tests are required in a 4-story residential building with appr. 90 units. Do I need to perform a test in EACH unit or just a sample? If sampling, what is the frequency?
I would appreciate some guidance on this. Thank you!
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Keith Amann
Vice PresidentWSP Built Ecology
67 thumbs up
November 4, 2010 - 1:27 pm
Patrik, the sampling methodology is described in the California Residential Manual that is referenced in this prerequisite. You would be required to test 1 per every 7 "like" units. I.e., At a minimum and if all 90 units are identical, you'd have to perform testing of 13 units. It is up to the project team and testing agent to identify the variations in unit types and ultimately how many tests are required, based on the sampling methodology described above.