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!

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What is the minimum screw size for fastening gypsum board to a cold-formed structural steel wall?

No. 5
No. 6
No. 7
No. 8

The correct answer is: No. 6

Fastening gypsum board to a cold-formed structural steel wall typically requires a screw size that can adequately secure the board while ensuring it can support the material's weight and resist shear forces. A No. 6 screw is recognized as the minimum size for this purpose. No. 6 screws provide sufficient holding power and are specifically designed to penetrate the steel and anchor securely, thereby creating a stable attachment for the gypsum board. Using smaller sizes may not offer the necessary strength to withstand the potential stresses in the wall system. Larger sizes, while suitable, may unnecessarily complicate the installation process or cause damage to the gypsum board. Thus, the No. 6 screw stands out as the optimal choice for this application in adhering gypsum board to cold-formed steel.