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.y _ y ' <br /> Total exposed. roof/ceiling area = � � �� <br /> . Total �;ross rocf/ceiling a.rea = � <br /> ��. Total s�light area. . . . . . . . . . . . . . . . . . <br /> k. Total roof/ceiling framing area. . . . . . . O�o. <br /> 1. Total net insulated roof/ceilin�; area. � �� . � <br /> Determine "U" va.lue for each roof/ceilin� sep�nent <br /> j. �- X �iUn _.�-..— _ <br /> k. ( p__.�_�,. X nU" .0?_4 = _2 �� '��-1 <br /> 1. �'a��? � X "U" .02? _ � � I C7G� C�..'? <br /> 4. 'I'o'I'AL. . . . . . .`. . . . . . . . . . . . . . . . . . . . . . . ��-����.� <br /> If total of �li is the sar.ie as, or less than #2, you r.a,ve <br /> met the in�ent of SBC CQ�6 (c) 1. .. • <br /> To utilize the total envelope system method, the values <br /> established bv the swn of items #3 and #4 shall not be � <br /> greater than the slun oi items #�l and �2. <br /> i <br /> 1. + 2, _ <br /> 3. + 4, _ <br /> P�9�.terials Thermal resistance "R" <br /> Exterior �r. . . . . . . . . <br /> Sid�.ng material. . . . . � <br /> Sheathing. . . . . . . . . . . . <br /> Insulation. . . . . . . . . . . <br /> Sheetr.ock. . . . . . . . . . . <br /> Interior air. . . . . . . . . <br /> Stu�s. . . . . . . . . . . . . . . <br /> Rim. . . . . . . . . . . . . . . . . . <br /> Concrete blocks. . . . . . <br /> -2- <br />