ASTM 2178 and 2357 Explained
ASTM 2178 and 2357 Explained
ASTM 2178 and 2357 Explained
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<strong>ASTM</strong> E<strong>2357</strong> Test ProcedureCalculation of Air Permeance: (Continued)• The referenced air leakage rate for each wallassembly shall be the higher data point valueleakage rate at 75 Pa for the exfiltration <strong>and</strong>infiltration case;• The reference base air leakage rate at 75 Padetermined for Specimen 1, the Opaque Wall,shall be the system air leakage rating assignedto the assembly provided that the air leakageat 75 Pa obtained for Specimen 2 is no morethan 10 % greater than the reference base airleakage for Specimen 1.
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