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r"Irmit No. <br />Heat source: ELECTRIC (except heat pumps), Zone') <br />Instructions <br />Effective July 1, 1991 <br />Overview The Chapter 5 Approach allows any combination of building envelope components as long as the <br />collective heat loss doesn't exceed a maximum limit established by code. 1110 calculations on Ilse lower part of tills <br />pago may be Ignored It below grade wall Insulation will either be RI on the Interior or R10 exterior, or If the <br />basement will not be a habitable space and unheated, and the floor above Is Insulated. <br />Page 2, Base Case Dwelling Calculation Comnuto areas using outer surfaces for walls, ceilings (loss rkyllghts), <br />and floors. Use the rough framed opening areas for doors. The glazing area Is derived by multiplying a constant <br />value (.15) by Iho sum of Ilia conditioned floor areas(Don'I Include unheated attached garages, etc). <br />Pago 2, Proposed Dwotl!ng Calculation Compute areas using outer surfaces for walls, ceilings, and floors. Use iho <br />rough framed opening areas for doors and glazing. Since there are only four boxes on 1110 form for glazing, combine <br />Iho areas of dolls wilt, the samo Uo value Into a single entry. WSEC, Chapter 10, default values must be used for all <br />walls, ceilings, floors, unles'od doors/glazing, and to doterntino bolow-grade waluslab UA. <br />raur-roposea uwotnng complys If the the Proposed UA doesn't excood Ilia Base Casa Up; T Transfer wall, calling, floor, glazing, and door values (R and U) to the Chock list, <br />Method A (below -grade wall/slab heat -loss tradeoffs) <br />1. For each wan 11101 diffors in depth, perform a separate calculation using Steps 2 & 3. Sum file totals <br />2. Dotorrglno Wall arp Irorn the slatiis`rHan �c Iho top of the mud III. Exci��io dpor and glazing areas and insert" <br />them nto Ilte doe gna o bozos o ow or oth aso case and repose loaf o r <br />3. 1 nd the ro rlafo wall dopll I T?bio 1 Ind Insert the corro pon$�Ing wall values into the Base case box(ss), <br />Multiply g���rosponding we ��l -va us by to area donvod in top NL <br />4. Aoa9tiro Iho �orlmptgr diptanco in linoor foot for each slob under a II with a dilloronl Pablo 1 depgt. Ins0r1 the, <br />s eb t •va us root a to corroopontlIng to each wall listed In Slop V3, <br />BASE CASE HEATLOSS I <br />D.G. wall fl1 11 (FI2) x U _ Table 1 (B010w grade wall/slabs) <br />D.G. stab ✓f 1 (L. FI) x F_, <br />Insulated Interior tvall values <br />G. wait N2 (Ft2) x U <br />L�—G <br />2' depth; walls <br />U.043 <br />. stab 42 (L. Ft) x F_ <br />slab <br />F.69 <br />TOTAL COLUMN —n <br />3.5' depth: walls <br />U.041 <br />slab <br />F.64 <br />7' depth; walls <br />U.037 <br />PROPOSED HEATLOSS <br />Use Chapter <br />slab <br />F.57 <br />10, pago 61, U & F-values for this calculation <br />and ilia same BASF CASE area/L. IL measurements. <br />InsulafeaLexfer/nL►Yall <br />O.G. wall rJ 1 <br />(FI2) <br />x U-_ <br />= <br />2' depth: walls U.070 <br />D.G. slab ll1 <br />(L. FI) <br />x F_ <br />slab F.60 <br />3.5' depth: walls U.064 <br />B.G. wall N2 <br />(F12) <br />x U_ <br />= <br />slab F.57 <br />7' depth: walls U.056 <br />B.G. slab 112 <br />(L. FI) <br />x F_ <br />a <br />slab F.42 <br />y I J r, `6 -i w <br />Page 1 <br />TOTAL COLUMN <br />I�aoPth' Indicaloo the total concrete wall doper <br />Including not more than 6' of <br />above credo <br />