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armit No. <br />S �f �{t SF r i�r F b��l�i� )A .'[�(�q((� ¢+g}tR Ifl � V a�> f 1 p' . <br />r �`: <br />`:.5�e ._ . , -. ,�. / � �.:-:. ,,m .�.'. f.:..i:cF ..lt..._ . . . <br />Use only for additions, under 750 ft2, that don't comply <br />n� <br />Etfective July 1, 1991 <br />PURPOSE: This worksheet demonstrates compliance for a =:> � <br />proposed addition w�here heat loss improvements in ihe existing <br />home receive credit toward compliance. Perform a Chapter 5. E X I S t I n g d w e I I i n g a n d <br />calculation only on the addition before using this torm. ImpYOVCmerlt U-ValueS: <br />MAIN WORKSHEET <br />I PROPOSED CASE UA VALUE (pg. 2) �� — <br />I BASE CASE UA VALUE (pg. 2J �� �;_, J <br />IAddi!ion heat loss �deficit (ber i minus 6ox 2,� � <br />0 <br />� Existing dwelling improvement credit. See �&� �� t� �, � <br />ADDITION COMPLIES IF BOX 4 IS GR2ATER THAN BOX 3 <br />Existing Dwelling improvement credit <br />: calcu/at/ons (Lisf separate improvements) <br />Change (lor.ation) Area (Ft2) <br />Existing glazin9 ( ) � � e [ <br />Replacement giazi�g ( ) � � r <br />' Exlsting home Improvement credlt ` SUgTRA( <br />'I Existing glazing ( ) <br />Replacement glazing ( _) <br />Exlsting home Improvement credit . ` 'SUBTRAE <br />Existing insulation ( C�I�i��1 ) <br />` New insulation ( 1 <br />Existing home Improvement credlt <br />Existing insulation ( <br />New insulation ( <br />'I <br />� <br />U-Value <br />�; uJ 20 <br />x U�(2'� <br />x�x U_ <br />Existing home Improvement credlt I . SUBTRACT (k) 1�om QJ <br />TOTAL CREDlTS (Add c, l, i, & l. In;ert into �on MAlN WORKSHEEI) <br />Reler to fhe Y991 WSEC, Chapte,r ;0, <br />forall U•value� not l/sted b�low. <br />Ex/sfing (untested) qlazing default <br />values: <br />Single pane U 1.20 <br />Double pane -U .90 <br />D�uble pane w/vinyl <br />or wood sash U .75 <br />Exl�ting bullding envelope values: <br />Ceilings w/no insuiation U .30 <br />Floors w/no irsulation U .13 <br />Walls w/no insulation U .31 <br />Giass hlock U .60 <br />UA <br />(a) c►Z�°5 <br />(b) �? G►� <br />(c) /{H "_�� <br />(d) <br />(e) <br />(�, � — <br />(9) <br />{h) <br />(�) <br />f1) _ <br />(k) <br />rlJ <br />INSPECTED <br />�v��.�r�r.a �i <br />Pac�e 2a <br />