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NYS <br />747 farvc el l Ave Suite C <br />wa 9840 <br />11531 G25-1090 Office <br />1.01 - AIR LEAKAGE TESTING AND INFRARED (IR) <br />In order to determine where air leakage is occurring, two (2) blower door fans were setup in the main <br />entrance to the administration offices. Each blower door fan can produce up to 8,000 cfm. The fans <br />are used to pressurize and depressurize the building, and then using IR and theatrical smoke identify <br />air leaks. This test was not used to determine a leakage rate and was only used for diagnostic <br />purposes. During testing three (3) primary locations were found to have substantial air leakage <br />occurring. First is the concrete slab to wall connection, second is roof to wall connections, and the <br />third is penetrations through the exterior walls. In section 1.02 the specific causes of air infiltration will <br />be discussed. <br />Note: <br />Interior images are taken while the building is under de -pressurization with warmer (brighter) areas indicating <br />potential pathways of air infiltration, thermal bridging, etc. Infrared (IR) thermographic images are shown on the <br />left side of the page with the corresponding visible light image of the same area to the right. <br />Image 03: <br />Overview of the blower door fan setup in the main <br />entrance doorway. <br />Image 04: <br />Overview of the control center for the blower door <br />fans. <br />Kittitas County - Maintenance Building Page 3 of 19 <br />