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�rmit No. <br />�— ,-- <br /><<. , � • r - � � <br />;� '_ <br />: Heat source: ELECTRIC (except heat pumps), Zone 1 <br />_�iructions Efi2ctive July 1, 1991 <br />Ok�rvlew The Chapter 5 Approach aliows any combinalion ot building envelope components as long as the <br />collective heat loss doesn't exceed a maximum limit estabiished by c��de. The calculations on the lower part of this <br />page may be ignored 'rf below grade wail insulation will either be R19 un the interior or R10 e�erior, or if the <br />basement will not be a habitabie space and unheated, and ihe tloor above is insulated. <br />Qage 2, Base Case Dwelling Calculatlon Compute areas using outer surtaces forwalls, ceilings (less skyiights), <br />and iloors. Use the roui;h framed opening areas tor doors. The glazing area is derived by multiplying a constant <br />value (.15) by the sum of the conditioned tioor areas(Don't inciudo unheated attached garages, elc). <br />Pape 2, Proposed Dwefting Caiculatlon Compute areas using outer surtaces for walls, ceilings, an' :�ors. Use the <br />rough framed opening areas tor doors and glazing. Since there are only tour boxes on the form for glazing, combine <br />the areas o( units with the same Uo value into a singie entry. WSEC, Chapter 10, de(ault values must be used tor all <br />walls, ceilings, tloors, untested doors/glazing, and to determine below-grade walVslab UA. <br />The Proposed Dweiling compiys if the the Proposed UA doesn't exceed the Base Case'UA. <br />Tran�fer wali, celling, floor, glazing, and door values (R and U) to the Check Iist. <br />� — -------� <br />Method A(below-grade wa!!/sla6 heaf-loss fradeotfs) <br />L For each v✓ali that differs in depth, pertorm a seperate calculation using Step� 2& 3. Sum the tolais. <br />2. ueierr,�ine wallarea irom the siab s�!!ia�e iu thu top nf tiie mu� �iIL �sci��e d�o� and gfaz�ng areas md insert <br />them 3nto ihe d2c,;nated �xas oe(ow or both Base case an rop e eat ss. <br />3. Find,theapp ropriate wall de tt1 in T bie 1 nd insert ihe �Cre�ponding wal(values into the Base case oox(es). <br />Mulupry t11A corresponding wali�U-va�ue by t�e area derived m� tep 4�1. : <br />4. MeasU re the perim ter distance in linear feet for eaci: slab under a wa11 with a dif(erent Table 1 depth. Insert the <br />siab f--value lrom �able 1 corresponding to each vrall listed in Step n3. <br />— RdSE C�SE HEATLOSS -�L ' <br />B.G. wai! #1 <br />B.G. siab #1 <br />B.G. wall #2 <br />B.G. siab #2 <br />(Ft2) <br />(L_Ft) <br />(Ft2) <br />(L. Ft) <br />xU_ _x F. _ <br />TOTALCOLUMN —► <br />PROPOSED HEATLOSS <br />Use Chapter 10, page 61, U& F-values for this calculation <br />and the same BASE CASE area/L. it. measuremenls. <br />B.G. wall #1 <br />B.G. slab #1 <br />B.G. wall #2 <br />D.G. slab tt2 <br />P�age 1 <br />(Ft2) X U_ _ <br />(L. Fi) x F_ _ <br />(Ft2) x U_ _ <br />�Table 1 (eeiow grade wall/slabs) <br />i •. � - . .1 <br />2' depth: walls <br />slab <br />3.5' depth: walls <br />sla6 <br />7' depth: walls <br />slab <br />�_ '-' •. ' <br />2' depth: walls <br />slab <br />3.5' depth: walls <br />siab <br />7' depth: walls <br />slab <br />Values <br />U.043 <br />F.69 <br />U.041 <br />F.64 <br />U.037 <br />F.57 <br />U.070 <br />F.60 <br />U.064 <br />F.57 <br />U.056 <br />F.42 <br />(L. Fl) X F_ _ ��.I ('Depth' indicatos tho total concreto wall depth <br />TOTAL COI_UMN --i including not more than G• ol above grade <br />