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equals , � <br /> Totals for net wall: 2383.56 <br /> 0.043 102.49 <br /> Totals for gross wall area: <br /> 323.44 <br /> * Framing area is l0a of gross wall area <br /> 13. Gross wall area x factor below = U x A per code <br /> Factor is .11 for A-1 single family & duplex <br /> .23 for A-2 and other residential <br /> .23 for other buildings <br /> .28 for over 3 stories <br /> Factor is: 0. 11 <br /> BTUH = 409,101 MUST BE > OR = <br /> 323.44 <br /> 14 . Gross ceiling area = (calculated above) <br /> 15. Ceiling framing area (10$ of ceiling area) = 2348 <br /> 16. Joist Area (10% of ceiling area) = 234.8 <br /> 17. Net ceiling area (Gross ceil, area - Joist area 234.8 <br /> 18. U ceilin � - 2113.2 <br /> 9� 0. 021 x Net ceil, area = 44 .3772 <br /> 19. U framing: 0. 024 x <br /> 20s Joist area = 5. 6352 <br /> Total of item 18 x item 19 = 50.0124 <br /> 21. G�oss ceiling area x factor below = U x A per code <br /> Factor is .026 for A-1 single family & duplex <br /> a033 for A-2 and other residential <br /> .06 for other buildings <br /> Factor is: 0. 026 <br /> BTUH = 61, 048 MUST BE > OR = <br /> 50.0124 <br /> (calculated above) <br /> ; <br /> ; <br /> ; <br /> I <br /> � <br /> iF <br /> 1 <br />