Two standards currently used to specify R-values on commercial roofing are both issued by which organization?
A. DOE
B. ASHRAE
C. ASTM
D. IRC
AnswerB. ASHRAE issues Standard 90.1 and proposed Standard 189.
ARE 4.0 exam prep: BS
A. DOE
B. ASHRAE
C. ASTM
D. IRC
AnswerB. ASHRAE issues Standard 90.1 and proposed Standard 189.
ARE 4.0 exam prep: BS
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