R-value and U-factor differ in that U-factor measures:
Correct Answer
B) The rate of heat transfer, where lower is better
Why this is correct: U-factor measures the rate of heat transfer through a building assembly (like a window). A lower U-factor indicates better insulating performance (less heat loss). It is the reciprocal of R-value (U = 1/R). Why the other choices are wrong: "The material's resistance to heat flow, where higher is better" describes R-value, not U-factor. "The reflectivity of a surface to direct solar radiation" describes solar heat gain coefficient or albedo. "The moisture permeability of a wall assembly overall" relates to vapor permeability or moisture resistance. Exam tip: For insulation, higher R-value is better. For windows, lower U-factor is better. They are inversely related.
Why This Is the Correct Answer
Why this is correct: U-factor measures the rate of heat transfer through a building assembly (like a window). A lower U-factor indicates better insulating performance (less heat loss). It is the reciprocal of R-value (U = 1/R). Why the other choices are wrong: "The material's resistance to heat flow, where higher is better" describes R-value, not U-factor. "The reflectivity of a surface to direct solar radiation" describes solar heat gain coefficient or albedo. "The moisture permeability of a wall assembly overall" relates to vapor permeability or moisture resistance. Exam tip: For insulation, higher R-value is better. For windows, lower U-factor is better. They are inversely related.
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A rectangular lot measures 150 feet by 200 feet. If the lot is located in a flood zone requiring 2 feet of fill, and fill costs $8 per cubic yard, what is the cost of fill for the entire lot?
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A property owner holds the fee simple interest but has leased the property to a tenant for 20 years. The owner's interest during the lease term is called: