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Washington State 1995 Edition <br />Energy Code <br />TABLE 10-3 <br />DEFAULT U-VALUES FOR FLOORS OVER 1'ENTFD CRAWI.SPACE <br />OR UNI1EATED BASEMENT <br />Floor <br />Perimeter <br />Post dt <br />Ream <br />Joists <br />0 <br />0 <br />0.112 <br />0.134 <br />I1 <br />0.100 <br />0.116 <br />19 <br />0.098 <br />0.114 <br />30 <br />0.093 <br />0.107 <br />11 <br />0 <br />0.052 <br />0.056 <br />1 I <br />0.048 <br />0.052 <br />19 <br />0 <br />0.038 <br />0 041 <br />11 <br />0.036 <br />0.038 <br />22 <br />0 <br />0.034 <br />0.037 <br />11 <br />0.033 <br />0.035 <br />25 <br />0 <br />0.032 <br />0.C34 <br />11 <br />0.031 <br />P.033 <br />30 <br />0 <br />0.028 <br />0.029, <br />I1 <br />0.027 <br />0.028 <br />38- <br />0 <br />0.024 <br />0.025 <br />TABLE 104 <br />DEFAULT U-VALUES FOR FLOORS OVER HEATED PLENUM <br />CRAWLSPACFS <br />Nominal U-value <br />R-vahtd4rimeur <br />11 <br />0.085 <br />19 <br />0.075 <br />30 <br />0.069 <br />Note: Crawlspaces used as heated plenums have approximately 30% <br />higher heat loss rate than unvented crawlspeces with the same assumed <br />ACIL Default U-values in Table 10-4 reflect this higher rate of heat loss. <br />78 <br />I <br />