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F R A N K L I N 625 Fourth Avenue <br />ENGINEERING lKirkland WA 98033 <br />L'I.i , i�, : ;)N51JILTING <br />Wall U-value Calculation - Spandrel Glass <br />rH 425 827-3324 <br />FAX 425 827-6252 <br />hvacg f rank 6neng.com <br />Layer <br />Description <br />Detail <br />R value <br />Exterior <br />Moving Air <br />0.17 <br />Surface <br />A <br />DlNass <br />U-0.55 <br />1,82 <br />B <br />Air gap <br />3' <br />0.90 <br />C <br />3 1l2' mll, <br />R-15 <br />7.80 <br />24" cc <br />D <br />E <br />Interior <br />Still Air <br />0.68 <br />Surface <br />1. Total Column <br />11.37 <br />2. U value, Invert amount in line 1 <br />0,09 <br />