Alabama Contractors License Practice Exam

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Study for the Alabama Contractors License Test. Prepare with quizzes featuring flashcards and multiple-choice questions, each supported by hints and explanations. Equip yourself for exam success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the R-value insulation requirement for a residential floor in climate zone 3?

The correct answer is: 19

In climate zone 3, the recommended R-value insulation requirement for residential floors is indeed 19. R-value measures the thermal resistance of insulation, indicating how effective it is in preventing heat transfer. Having an R-value of 19 means that the insulation provides a sufficient barrier to heat flow, ensuring that homes maintain comfortable indoor temperatures and reduce energy expenses, especially during periods of extreme weather. This requirement is established by building codes and energy conservation standards to promote energy efficiency in residential construction. Proper insulation plays a crucial role in minimizing heat loss in the winter and heat gain in the summer, which is particularly important for homes in climate zone 3, where moderate weather conditions can still be affected by energy consumption. The other provided values do not align with the recommended standards for this specific climate zone. An R-value of 13 would typically be too low for effective insulation in flooring, leading to higher energy costs. Values of 30 and 38 exceed the requirements for climate zone 3, which may result in unnecessary additional costs for insulation without proportionate benefits.