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- Exterior Envelope Average "U"Computation <br /> Site Address: 135 Crystal Creek, Orono, Minnesota <br /> Contractor: Jyland Development, Inc. 12-Oct-98 404-0600 <br /> 4. Total Exposed Roof/Ceiling Calculations: <br /> Total exposed roof/ceiling <br /> area 1,692 sq ft <br /> j) Total skylight area 0 sq ft x"U" 0.000 = 0.00 <br /> k) Total roof/ceiling framing <br /> area 169 sq ft x"U" 0.000 = 0.00 <br /> I) Total net insulated <br /> roof/ceiling area 1,523 sq ft x"U" 0.022 = 33.34 <br /> #4 TOTAL j)thru I) 33.34 <br /> Alternate Building Envelope Design <br /> To utilize the totai envelope system method,the values established by the <br /> sum of items#3 and#4 shall not be greater than the sums of items#1 and#2. <br /> #1: 507.43 +#2: 43.99 = 551.42 <br /> #3: 353.50 +#4: 33.34 = 386.85 <br /> CERTIFICATION <br /> I hereby certify that I have calculated the "U"factors and "R"values <br /> herein and that the building here described meets or exceeds the State of <br /> Minnesota Energy Conservation Act. <br /> > ;% > <br /> �a/;</<�,� �����- <br /> Date: �_ ��: ac <br /> �! — <br /> (Signature) <br />