z A building wall is constructed as follows: starting from the inside the materials used are? (a)
Question:
z A building wall is constructed as follows: starting from the inside the materials used are?
(a) 1/2" gypsum wallboard;?
(b) Wall-cavity, 80% of which is occupied by a 3.5" fiberglass batt and 20% of which is occupied by wood studs, headers, etc.;?
(c) Rigid foam insulation/sheathing (R = 0.7m2 K/W); and (d) hollow-backed vinyl siding. The wall is illustrated in Figure?
along with an equivalent circuit diagram. Calculate the equivalent R-value of the wall. Do not forget the layers of still air on both inside and outside.
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All the thermal resistances add in series except for the wood a...View the full answer
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