Calculate the annual heat loss (in U.S. units) through the following wall assemblies using U-factors from Table

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Calculate the annual heat loss (in U.S. units) through the following wall assemblies using U-factors from Table 2.9 and the annual heating degree days over a typical heating season at the geographical location where you reside. Base your analysis on 1000 ftof wall area.
a. 2 × 4 wood-framed wall with R-11 insulation
b. 2 × 6 wood-framed wall with R-19 insulation
c. 8 in concrete uninsulated wall
d. 8 in solid brick uninsulated wall
e. 8 in concrete masonry unit (CMU) wall, with perliteinsulated cores
f. 14 in thick uninsulated adobe wall
g. 16 in solid log wall
h. 23 in straw bale wall
i. 31⁄2 in structural insulated panel (SIP) with EPS core wall

Table 2.9Wall Type Conventional Construction Wood Frame 2 x 4 (38 mm x 88 mm) wall w/ R-11 (RSI-1.9) insulation 2 x 6Alternative Construction Adobe 10 in (250 mm) uninsulated 10 in (250 mm) insulated 14 in (350 mm) uninsulatedStructural Insulated Panels (SIP) SIP wall with EPS core (3 in/88 mm) Agriboard straw panels (4% in/110 mm)

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