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Use only for additions, under 750 ft2, that don't comply <br />i <br />PURPOSE: This worksheet demonstrates compliance for a <br />proposed addition where heat loss Improvements In the existing <br />home receive credi! lcward compliance. Perform a Chapter 5 <br />calculation only on the addition before using this form. <br />MAIN WCRKSHEET <br />PROPOSED CASE UA VALUE (pg. 2) <br />© BASE CASE UA VALUE (pg. 2) <br />r^ <br />Addition heat loss deficit (be,( 1 minus box 2) <br />•,7. 2 <br />Existing dwelling Improvement credit. Seel&. <br />1 1�j <br />ADDITION COMPLIES IF BOX 4 IS GREATER THAN BOX 3 <br />Effective July 1, 1991 <br />Existing dwelling and <br />Improvement U-values: <br />Refer to the 1991 INSEC, Chapter 10, <br />for all U•values not listed below. <br />Existing (untested) glazing default <br />values: <br />Single pane <br />Double pane <br />Double pane w/vinyl <br />or wood sash <br />Existing building envelope values: <br />Ceilings w/no insulation U in <br />Floors w/no Insulation U .13 <br />m "Wallsw/no Insulation U .31 <br />Existing Dwelling Improvement credit block U .so <br />calculations (List separate improvements) <br />Change (Imation) Area (F12)UA INSPECTED <br />Existing glazing ( I x U <br />Replacement glazing ( ) x I,_ <br />Existing home Improvement credit SUBTRACT (b) from (a) <br />Existing glazing ( ) x U__ <br />Replacement glazing ( ) x U_ <br />Existing home Improvement credit SUBTRACT (e) from (d) <br />Existing insulation ( ) I I I) x <br />New insulation ( "I I ) I ( x U_rfr' <br />Existing home Improvemer.l credit SUBTRACT (h) from (g) <br />Existing Insulation ( _) x U_ <br />New insulation ( _ _) x U_ <br />Existing home Improvement credit SUBTRACT (k) iron O) <br />TOTAL CREDITS (Add c, I, i, 6 I. Insert into 200 MAIN WORKSHF_E7) <br />M ICLSOWMAKINDV MBrn 91 <br />n�:.., O� <br />