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Total exposed roof/ceiling area 2746.5 sq. ft. <br /> j. Total skylite area 20.50 <br /> k. Total roof/ceiling framing area (average 1%) 27_47 <br /> I. Total net insulated roof/ceiling area 2698.54 <br /> "U" value for each roof/ceiling segment. <br /> j. 20.5 x "U" = 0.00 <br /> k. 27.465 x "U" 0.031 = 0.84 <br /> I. 2698.535 x "U" 0.023 = 61.64 <br /> 4� TOTAL 62.48 <br /> If item #4 is the same as, or less than item #2, you have met the intent of SBC 6006(c)1. <br /> Alternate Building Envelope Design <br /> To utilize the total envelope system method, the values established by the sum of <br /> items#3 and #4 shall not be greater than the sum of items#1 and #2. <br /> #1 578.24 + #2 71.41 = 649.65 <br /> #3 546.79 + #4 62.48 = 609.26 <br />