Laserfiche WebLink
Instrvctions <br />'ermft No. <br />Heat source: OTHER (gas, 0(1, propane, heat pumps), Zone 1 <br />EHective Juty 1,1991 <br />Overvlew The Chapter 5 Approach allows any combination ot building envebpe componeMs as long as the <br />collective heat loss doesn't exceed a maximum Iimft estabNshed by code. The cakxilations on the bwer paR of this <br />page may be ignored M betow grade wall insulatfon wiil efther be R19 on the iMerior or R10 exterbr, or it the <br />basemem will not be a habitable space and unheated, and the floor above is fnsulated. <br />Page 2, Base Case Dwelling Calculation Compute areas using outer sur(aces for walls, ceilings (less skyiights), <br />and floors. Use the rough framed opening areas for doors. The glazing area is derived by muitiplyfng a constant <br />value (.15) by the sum ot the condftioned floor areas(DonY include unheated attached garages, etc). <br />Pape 2, Proposed Dwelling Calculatlon Compute areas using outer surtaces for walls, ceilfngs, and floors. Use the <br />rough framed opening areas for doors and glazing. Since there are oniy four boxes on the fortn for glazing, combine <br />the areas of units wilh the same Uo value irrio a single entry. WSEC, Chapter 10, default values must be used tor ail <br />walls, ceilings, iloors, untested doors/glazing, and to detertnine below-grade walVslab UA. <br />BASE CASE HEATLOSS <br />B.G. wall #1 <br />B.G. slab #t <br />B.G. wall #2 <br />B.G. slab #2 <br />(Ft2) <br />(L. Ft) <br />(Ft2) <br />(L. Ft) <br />TOTAL COLUMN .�► <br />PROPOSED HEATLOSS <br />Use Chapter 10, page 81, U& F-values tor this calculation <br />and the same BASE CASE area/L. ft. measuremerris. <br />B.G. wall #1 <br />B.G. slab #1 <br />B.G. wall #2 <br />B.G. slab #2 <br />(Ft2) x U_ _ <br />(L. Ft) x F = <br />(Ft2) x U_ _ <br />(L. Ft) x F_ _ <br />TOTALCOLUMN <br />Table 1 (Below grade wall/slabs) <br />2' depth: walls <br />slab <br />3.5' depth: walls <br />s/a6 <br />7' depth: walls <br />slab <br />� :,. :.� - . <br />2' depth: walls <br />slab <br />3.5' depth: walls <br />sleb <br />7' depth: walls <br />slab <br />Values <br />U.043 <br />F.69 <br />U.441 <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 />('Depth' ind'roalee the total concre6a wu11 deptl� <br />includinp not more than 6' of above grade <br />