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��rmit No. <br /><; .��e.: .,..r ,...::.. . <br />as, oil, propane, heat pumps), Zone 1 <br />Heat source. OTHER (g .: _....�:, <br />Eftective July 1, 1991 <br />Instructions <br />Overview The Chapter 5 Approach allows any combination ot building envelope components as long as the <br />collective heat loss doesn't exceed a maximum limit established by code. The calculations on the lower paR of this <br />page may be ignored it below grade wail insulation will either be R19 on the interior or Rt 0 exterior, or it the <br />basement will not be a habitable space and unheated, and the iloor above is insulated. <br />Page 2, Base Casa Dwelling Calcu;ation Compute areas using outer surt aces for walls, ceilfngs (less skylights), <br />and floors. Use the rough framed opening areas for doors. The giazing arf,a is derived by multiplying a constant <br />value (.15) by the sum of the conditioned floor areas(Don't inciude unhe2.ted attached garages, etc). <br />Page 2, Proposed Dwelling Calculatfon Compuie areas using outer �.urfaces for walls, ceilirgs, and tloors. Use the <br />rough (ramed opening areas for doors and glazing. Since there are or�y four boxes on the tortn for glazing, combine <br />the areas of units with the same Uo value into a single entry. WSEC, Chapier 10, default values must be used for a!! <br />walls, ceilings, tloors, untested doorslglazing, and to determine b=elow-grade walVslab UA. � <br />_ ^--- . �.; <br />BASE CASE HEATLOSS <br />B,G. wail #1 <br />B.G. slab #1 <br />B.G. wall #2 <br />B.G. slab #2 <br />(Ft2) <br />(L. Ft) <br />(F12) <br />(L. Ft) <br />TOTAL. COLUMN —► <br />F'ROPOSED HEATLOSS <br />Use Chapter 10, page 81, U& F-values tor this calculation <br />snd the same BASE CASE arealL. ft. measurements. <br />B.G. wall #1 <br />B.G. slab #1 <br />B.G. wall #2 <br />B.G. slab �2 <br />(Ft2) <br />(L. Fi) <br />(Ft2) <br />(L. Fl) <br />TOTALCOLUMN <br />Table 1 (Beiow grade wall/slabs) <br />In ��1^t a In'--'-'Wall <br />2' depth: walls <br />slab <br />3.5' depth: walls <br />slab <br />7' depth: walis <br />slab <br />2' depth: walls <br />slab <br />3.5' depth: walls <br />slab <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 />('Doptli indica�os tho total concreto wall deplh <br />includin9 not moro than 6• o( abovo grado <br />