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 maximum ceiling joist span in feet for #3 Southern Pine (2 x 6) with 16-inch joist spacing?

12ft 6in
14ft 9in
16ft 3in
18ft 1in

The correct answer is: 14ft 9in

The correct choice is based on the established building codes and design standards that dictate the maximum spans for ceiling joists based on their size, grade, spacing, and the material being used. For #3 Southern Pine lumber, the maximum recommended span for 2 x 6 joists spaced 16 inches apart is indeed 14 feet 9 inches. This measurement ensures that the joists can adequately support the loads they are designed to bear, including the weight of the ceiling material and any other additional loads (like insulation or light fixtures). This specific span is calculated considering the strength properties of Southern Pine, including its ability to resist bending and deflection under load. Understanding these limitations is critical for ensuring structural integrity and compliance with building codes, which protects both the occupants and the structure itself. Spanning further than this could result in excessive deflection, leading to potential structural failure or a negative impact on finishes such as drywall.