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Addrcss <br />�- <br />Permit No. <br />Use only for additions, under 750 ft2, t6at d'on't comply �. <br />Purpose: This worksheet de•.nonstrates compliance for a proposed addition where heat loss improvements in the exisNng <br />home receive credit toward compliance. Perfortn a Chapter 5 calculation onfy on the addition before using this fortn. <br />MAIN W7RKSHEET <br />1 PROPOSED UA VALUE (from pg. 2, Chapttt 5 Qualification Fortn or from WATTSUI� 1) I � S• � <br />2 T.4RGET UA VALUE (&om pg. 2, Chapter 5 Qualification Fortn or from WATTSUN) 2) � d �, .� <br />3 Addition heat loss deficit (box 1 minus box 2) 3) 14 ,( <br />4 Existing dwelling unprovement credit. (See Total Credits beiow.) 4) Z7 ,7 <br />ADDITION COMPLIES IF BOX 4 IS GREATER THAN BOX 3 <br />a�„«.a �;K <br />r. rin, If <br />�� <br />SUBTRACT (b) from (a) <br />Existingglazing(Lwr. Flr. <br />Reolacement elazin¢ ! � � <br />ig Dwelling Improvement Credit Calculations <br />Arca (Ft2) U-factor UA <br />R.+. 8°SG� S�} xU (a) �' 9� 7 <br />� �� 5-.� xU . So �b) L%� 0 <br />(c) <br />Existing home improvement credit = Lz � <br />3° 4° I Z xU . 9 L (d) 11, G <br />� " � 12 xU �S� i�) �i.0 <br />�� <br />SUBTRACT (e) trom (d) E=isNng home improvement credit = <br />:ing insulation ( ) R- xU (g) <br />insulation ( ) R- xU (h) <br />, . . c) <br />SUBTRAeT (h) irom (g) Ezi�ting home improvement cred�t = <br />ing insula[ion ( 1 R- xll (il <br />New insulation ( 1 R- � � xU <br />SUBTRACT (k) from (j) E�ting home improvement credit = <br />Add c,f,i,l to ennal Total Credib. <br />Insert here & in 1 x 4 of MAIN WORKS}IEET (above) TOTAL <br />CREDITS <br />I Existing Dwelling U -Factors <br />Refer to the 1994 WSEC, Chapter 10, for all U-factors not listed below. <br />5, D <br />L�� 7 <br />l� IE B � lE <br />MAY 1 1 2001 <br />Ex�stmg (untested) glazmg default values: Building Envelope �AAI�ils: — <br />Single Pane U 1.20 Ceilings w/no insulat�T�F_3�F EVERETT <br />Double Pane (metal frame) U.92 Floors w/no insulahon �[p(jn�t ServiCes <br />�. Double Pane w/ vinyl or wood sash U.63 Walls w/no insulallon U31 <br />Glass Blocks U.51 <br />