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FROM : D.F.P. PLANNING & DESIGN,INC. PHONE NO. : 651 638 1412 Feb. 06 2001 02:09PM P8 <br /> CEILING WITH VENTED ATTIC St'NLr; Ntsvv,V <br /> R VALUE R VALUE <br /> FRAMING CEILING <br /> 0.61 ' Air Film 0.61 <br /> 36-00 Insulation 44.00 <br /> 4.38 Joist <br /> .,.....,.....,---.....-----ita. '.0116111 <br /> fili ..1,1)76:, .56' Ceiling ..56 <br /> . . Igo , <br /> 0.61 Air Film Q_61 <br /> M \1- 41_55 . Total R , '45-7s <br /> t _024 ,U = 1 _021 <br /> CATHEDRAL CEILING • <br /> R VALUE R VALUE <br /> FRAMING COILING ' : ::',,: <br /> •�, II lin 111111 1 1 111 1 It In m 0-61 Inside.air•film -0.61 • <br /> ' • • ` ' I _56 Ceiling <br /> 14.375 Joist(Spacer) <br /> Insulation 33.x185 <br /> Air. Space .50 <br /> .67 Roof decking -67 <br /> .06 Felt <br /> W _44 Shingle 0.17 Outside air film 0_17 . . <br /> 16.68 Total R 36.86 ; <br /> .059 t = U .027 . <br /> Window infiltration..5.cfm/lineal foot of crack <br /> Residential, door infiltration 0.5 cfm/square toot or door and minimum code requirement <br /> Non-residential door infiltration 11.0 cfw/linebl foot of crack <br /> Ub 12" concrete block no2insulation = .781 R 1.28 ' <br /> double glass - <br /> triple glass = .31 <br /> All exterior walls and ceilings must have a vapor barrier (0.10) perm .). <br /> Vapor barrier must be on the inside (heated side) of wall. • <br /> Vapor barriers of the polyethelene thin film have no R 'value. <br />