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= r 1f rii:`l t �'rte i i 2+1�. <br />s. <br />_, __,_ y,,c_;r Heat source: OTHER (gas, oil, <br />�rmit No. <br />r r i r��� '11rJt', <br />propene,�heat pumps), Zone 1 <br />Instructions enaa��e ��iy i, iss� <br />Overvlew The Chapter 5 Approach allows any combination of huilding envelope compononts as long as the <br />colleclive heat loss doesnY exceed a maximum Ilmit established by code. The cakulations on the bwer part of thls <br />page may be Igrrored 11 below grede wa�, Insulalion will eRher be R79 on the Interior or R10 exteriar, or il the <br />basement will not be a habflable space and unheated, and the floor above is ineulated. <br />Pepe 2, Bese Case DwelllnA Celculation Compute areas using outer suAaces forwalis, ceilfngs (less sky yhts), <br />and tloors. Use the ruugh tramed opening areas for doors. The giazing area Is derived by multlpiying a constant <br />value (.15) by ihe sum ol the condttioned floor areas(Don't include unheated attached gareges, ete). <br />Peae 2, proposad DweIIInB ��culatlon Compute areas using outer suAaces for walls, cellings, and floors. Use the <br />rough Iramed opening aieas lor doors anA glazing. Stnce there are only lour boxes on the form for glazing, combine <br />�he areas of unils wilh ihe samo Uo value Inlo a single entry. WSEC, Chapter 10, default values must be used for all <br />walls, ceilings, iloors, untested doors/glazing, and lo determine below-grade walVslab UA. <br />The Proposed Dwelling complys If tha the Proposed UA doesn't ezceed the Base Case UA. <br />Transler wail, celling, floor, glazing, end doorvalues (R end U) to the Check Ilst. <br />� Meihod A:(below-grade wall/slab heat-loss tradeoffs) <br />. 1. For each wall that diflers in depih, pertorm a seperate calculation using Steps 2& 3. Sum the totals. ��� � � <br />. 2. Determine wall arya trom the slap s rtaoe to the 1oD ol.the mud 8III. Ezd tlo dDor and glazing�areas and InseK <br />them into ttie desiBnated bozes be�ow lor both Base case and Propase�healass. . <br />� 3. pmd,the oroDriato waU deptl in T ble t and insed 1hBcC responding wall values into the 8ase case box(es).�� �� <br />Multiply t�e cbrrespondmg wa�l�U-va�uo by the aron denvetl•in Step #1. - . . <br />4. t�ea5Lm Iho �erirr�Clgs di�slance in Iin�ar feet for oach 61ah qrd�r a���II with n dBtereN Table 1 deplh. Insert Ihe -�. <br />s ab F-va ue rom � e correspon ing to each wnll listed m lep <br />BASE CASE HEATLOSS `" <br />' B.G. wall N7 (F12) x U_ = Table 1(6elow grade wall/slabs) <br />B.G. slab k1 (L. Fq x F_ - /nSWaled�nfedacwall Valuos <br />B �. wall p2 (Ft2) x U_ = 2' depth: ivalls U.043 <br />L.G. slab k2 (L. Fq x F_ = 3.5' deplh: �t�alls U6041 °:� <br />� � � '�� TOTALCOLUMN —► slab F.64 <br />7' deplh: �valls U.037 <br />PROrOSED HEATLOSS slab F.57 <br />Use Chapter t0, pa9e B7, U 8 F-values for Ihis caialation lnsulatedextr[lor w,ll <br />and Ihe same BASE CASE area/L. il. moasurements. <br />B.G. wall k1 <br />�.G. slab Nt <br />�.G. wall #2 <br />[3.G. slah #2 <br />i <br />(Fte) x U_ _ <br />(L. Ft) x F_ _ <br />(Fl2) z U_ _ <br />(L. FI) z F_ _ <br />TOTALCOLUMN <br />2' depth: walls U.070 <br />slab F.60 <br />3.5' deplh: walls U.064 <br />slab F.57 <br />7' depth: walls U.056 <br />slab F.42 <br />('Gopth' indicalas Iho lolal conuoio wall dopih <br />including noI mora Ihan C o� abovo grndo <br />