For a roof slope of 8 in 12, the factor to convert plan area to actual area is

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Prepare for the Virginia Class A Contractor License Exam. Review with flashcards and multiple choice questions. Utilize hints and explanations to master the exam material, ensuring you're ready to succeed!

Multiple Choice

For a roof slope of 8 in 12, the factor to convert plan area to actual area is

Explanation:
Converting plan area to the actual roof area uses the secant of the roof angle, since a sloped surface covers more area than its horizontal projection. The rise/run for an 8 in 12 roof is 8/12 = 2/3, so the factor is sqrt(1 + (2/3)^2) = sqrt(1 + 4/9) = sqrt(13/9) ≈ 1.202. Therefore, multiply the plan area by about 1.202 to get the actual roof area.

Converting plan area to the actual roof area uses the secant of the roof angle, since a sloped surface covers more area than its horizontal projection. The rise/run for an 8 in 12 roof is 8/12 = 2/3, so the factor is sqrt(1 + (2/3)^2) = sqrt(1 + 4/9) = sqrt(13/9) ≈ 1.202. Therefore, multiply the plan area by about 1.202 to get the actual roof area.

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