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�ermit No.
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<br /> Ta:.'.sF� � � �`&,.°�,"f.�q`".•s
<br /> .�� ,��; Use only for additions, under 750 ft2, that don't comply ,',� `>; �' ���
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<br /> c;.;2ctive July 1, 1991
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<br /> ��m`i�.s.S;t...yr�� .,. .,£K�..s:ia'�saA�.hiFir...,�n.., � ,z�s..v,�r�. .< ,< , .:u },k s.� ,....'.� • - r�+r� � �' y.`.,
<br /> ?^ PURPOSE: This worksheet demonstrates compliance for a �
<br /> � proposed addition where heat loss improvements in the exfsting > i E x I S t I � g d W e l I f �g e(1 d
<br /> � home receive credit toward compliance. Per(orm a Chapter 5 •
<br /> �;: calculation only on the addition before using this torm. impl'OVemellt U-valueS:
<br /> ��.
<br /> ���`�Z�i������� ..,;���'�f�r,,,�a � ' �€. z ;: ' ;.. Relertothe7991WSEC, Chapterl0,
<br /> ` for all U-values not llsted below. ,
<br /> x MAIN WORKSHEET
<br /> i Exlstlnp (untested) 81azlnp de/aulf '.
<br /> �� PROPOSED CASE UA VALUE (pg. 2) ' values: :
<br /> �
<br /> BASE CASE UA VALUE (pg. 2) '. Single pane U 120
<br /> Additinn heat loss deficit (box 1 minus box 2) - Double pane U .90
<br /> ,: Double pane w/vinyl
<br /> i: Existing dwelling improvement credft. See�B� or wood sash U .75
<br /> ADDITION COMPLIES IF BOX 41S GREATER 7HAN BOX 3 Exlsting bullding envelope values:
<br /> Ceilings w/no insulation U .30
<br /> Floors w/no insulation U .13
<br /> Walls w/no insulation U .31
<br /> = Exmisting Dwelling improvement credit ciass biock u .so
<br /> �; ca/cu/allons (Lis!separate improvements)
<br /> Change pQcalion) • Area (Ft2) U-Velue UA INSPECTED
<br /> �I ExisUng glazing ( ) x U_ (a)
<br /> :.
<br /> ;� Replacement glazing( ) x U_ (b)
<br /> � ';
<br /> ,::SUBTRACT(bJ trom.(a} ' (c) � , ��:'
<br /> „� Existing home Improvement credit r < ,.:•
<br /> � r:
<br /> „ Existing glazing ( ) x U_ (d) ��x.�
<br /> �s� y.
<br /> 2; Replacement glazing ( ) x�— �e>
<br /> �' Existing home Improvement credlt :!sUBTRACT(eJ �fom.jd) :` ��� °" ��`'�� '
<br /> ,: x U— (91
<br /> .' Existing insulation ( )
<br /> New insulation( ) x U_ (h)
<br /> �' Exlsting home Improvement credit •Sl18TRACT(h) Imm:,(gl (Q -� „
<br /> �: Existing insulation ( ) x U_ (i)
<br /> ; New insulation( ) x U_ (k)
<br /> ^> Existing home Improvement credlt SUBTRACT(k) �rom (j) (I)
<br /> ... :�. .�.. "� WEFS�BOWMAN�WOVCMOFfi9t:.
<br /> TOTAL CREDITS (Add c, l, i, &1. Insert into �on MAIN WORKSHEE'�
<br /> Page 2a
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