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Type: composition shingle on wood sheathing As proposed <br /> Roofs Gross area: same as proposed As proposed <br /> Solar absorptance=0.75 As proposed <br /> Emittance= 0.90 As proposed <br /> Attics' Type: vented with aperture= 1 ft2 per 300 ft2 ceiling As proposed <br /> area <br /> Type: same as proposed As proposed <br /> Foundations Foundation wall area above and below grade and soil As proposed <br /> characteristics: same as proposed <br /> Area: 40 ft2 As proposed <br /> Opaque doors Orientation: North As proposed <br /> U-factor: same as fenestration from Table R402.1.4 As proposed <br /> Total area"= <br /> (a) The proposed glazing area, where the proposed <br /> glazing area is less than 15 percent of the <br /> conditioned floor area As proposed <br /> (b) 15 percent of the conditioned floor area, where the <br /> proposed glazing area is 15 percent or more of the <br /> conditioned floor area <br /> Vertical fenestration Orientation: equally distributed to four cardinal As proposed <br /> other than opaque doors compass orientations (N, E, S & W). <br /> U-factor: as specified in Table R402.1.4 As proposed <br /> SHGC: as specified in Table R402.1.2 except that for <br /> climates with no requirement(NR) SHGC =0.40 shall As proposed <br /> be used. <br /> Interior shade fraction: 0.92 - (0.21 x SHGC for the 0.92 - (0.21 x <br /> standard reference design) SHGC as <br /> proposed) <br /> External shading: none _ As proposed <br /> Skylights None As proposed <br /> Thermally isolated None As proposed <br /> sunrooms <br /> For residences that <br /> are not tested,the <br /> Air leakage rate of 5 air changes per hour in climate same air leakage <br /> zones 1 and 2, and 3 air changes per hour in climate rate as the standard <br /> zones 3 through 8 at a pressure of 0.2 inches w.g(50 reference design. <br /> Pa). The mechanical ventilation rate shall be in addition For tested <br /> to the air leakage rate and the same as in the proposed residences,the <br /> Air exchange rate design, but no greater than 0.01 x CFA +7.5 x (Nbr+ 1) measured air <br /> where: exchange rate". <br /> CFA =conditioned floor area The mechanical <br /> Nbr=number of bedrooms ventilation rateb <br /> Energy recovery shall not be assumed for mechanical shall be in addition <br /> ventilation. to the air leakage <br /> rate and shall be as <br /> proposed. <br /> 22 <br />