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PURPOSE: This worksheet demonstrates compliance for a <br />proposed addition where heat loss Improvements In the existing <br />home receive credit toward compliance. Perform a Chapter 5 <br />calculation only on the addition before using this form. <br />MAIN WORKSHEET <br />PROPOSED CASE UA VALUE (pg. 2) <br />BASE CASE UA VALUE (pg. 2) <br />Addition heat loss deficit (box 1 minus box 2) <br />Existing dwelling Improvement credit. SeOR&M <br />ADDITION COMPLIES IF BOX 4 IS GREATER THAN BOX 3 <br />Existing Dwelling Improvement credit <br />calculations (List separate improvements) <br />Change (IQcallon) I • Area (F(2) U-Value <br />Existing glazing ( ) <br />Replacement glazing ( ) <br />Existing home Improvement credit <br />Existirg glazing () <br />Replacement glazing (—) <br />Existing home Improvement credit <br />Existing Insulation () <br />New Imulatlon I—) <br />x U__ <br />IxU_ <br />SUBTRACT (b) from .(a) <br />x iJ— <br />x U_ <br />SUBTRACT (e) troin (d) <br />x U_ <br />x U_ <br />Existing home Improvement credit I SUBTRACT (Ir) trom (9) <br />No. <br />Effective July 1, 1991 <br />Existing dwelling and <br />Improvement U-values: <br />Refer to the 1991 WSEC, Chapter 10, <br />for all U-values not listed below. <br />Existing (untested) glazing default <br />values: <br />Single pane U 1.20 <br />Double pane U .90 <br />Double pane w/vinyl <br />or wood sash U .75 <br />Existing building envelope values: <br />Ceilings wino insulation U .30 <br />Floors w/no Insulation U .13 <br />Walls w/no Insulation U .31 <br />Glass block U .60 <br />UA INSPECTED, <br />Existing Insulation ( ) x U_ <br />New Insulation () x U_ <br />Existing home Improvement credit SUBTRACT (k) from Q) <br />TOTAL CREDITS (Add c, f, I, & 1. Insert into Don MAIN WORKSHEET) <br />(a) <br />(b) <br />(c) <br />(d) <br />(e) <br />(g) <br />(h) <br />(I) <br />(U <br />(k) <br />(I) <br />Page 2a <br />