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- 1 <br /> ORONO COPY <br /> EXTERIOR ENVELOPE AVERAGE "U" COMPUTATION <br /> by <br /> SAWHORSE CONSTRUCTION <br /> 4740-42nd Ave No <br /> Robbinsdale, Mn 55422 <br /> 533-0352 <br /> Owner: Jeff Zell Phone: <br /> Address : 3680 Northern Avenue Date: 2/15/00 <br /> DETERMINE WORKING SQUARE FOOTAGE OF EACH: <br /> 1 TOTAL EXPOSED WALL AREA. . . . 735. 00 sq ft x "U" 0. 11 = 80 . 85 <br /> 2 TOTAL ROOF/CEILING AREA. . . . 440.00 sq ft x "U" 0 .026 = 11.44 <br /> 3 TOTAL EXPOSED WALL AREA CALCULATIONS: <br /> Total exposed wall <br /> area above block line 735.00 sq ft <br /> a) Total wall window area: <br /> Low "E" glazed. . . 48 .00 sq ft x "U" 0. 310 = 14. 88 <br /> (6 @ 2448 glass) <br /> glazed. . . 0.00 sq ft x "U" 0 .000 = 0 .00 <br /> b) Total door area. . . . . . 0. 00 sq ft x "U" 0 . 150 = 0 . 00 <br /> c) Total sliding glass door area: <br /> -glazed. . . 72 .00 sq ft x "U" 0 . 310 = 22 . 32 <br /> (sliding doors w/transoms) <br /> glazed. . . 36.00 sq ft x "U" 0 . 310 = 11.16 <br /> (terrace door) <br /> d) Total fireplace wall . 0. 00 sq ft x "U" 0 . 000 = 0 . 00 <br /> e) Total wall framing <br /> area (average 10%) . 57 . 90 sq ft x "U" 0. 076 = 4 .40 <br /> f) Total net wall area above <br /> floor (ins 521 . 10 sq ft x "U" 0.037 = 19 . 28 <br /> g) Total rim joist area. 70.00 sq ft x "U" 0. 022 = 1 . 54 <br /> Total foundation <br /> area (exposed) . . . . . 0 .00 sq ft <br /> h) Total foundation <br /> window area. . . . . . . . sq ft x "U" = 0.00 <br /> i ) Total net foundation <br /> area above grade. . . 0.00 sq ft x "U" 0. 105 = 0. 00 <br />