What is the recommended maximum spacing for drywall screws when attaching 1/2" drywall to wood studs?
Correct Answer
C) 12 inches on center
Drywall screws should be spaced maximum 12 inches on center when attaching to wood framing. This provides adequate holding power while minimizing the number of fasteners needed.
Why This Is the Correct Answer
The maximum spacing of 12 inches on center for drywall screws on wood studs is the industry standard established by gypsum board manufacturers and building codes. This spacing ensures adequate holding power to prevent sagging or failure of the drywall while being economical with fastener usage. The 12-inch spacing provides sufficient attachment points to distribute loads evenly across the drywall surface. This standard applies specifically to 1/2" drywall on wood framing members.
Why the Other Options Are Wrong
Option A: 6 inches on center
6 inches on center is unnecessarily close spacing that would result in over-fastening and increased labor costs without providing significant structural benefit.
Option B: 8 inches on center
8 inches on center, while providing good attachment, is closer than the maximum required spacing and would increase installation time and material costs unnecessarily.
Option D: 16 inches on center
16 inches on center exceeds the maximum recommended spacing and could result in inadequate support, potentially causing drywall sagging or failure between fasteners.
Memory Technique
Think 'Dozen for Drywall' - 12 inches maximum spacing, like a dozen eggs, is the standard for wood stud attachment.
Reference Hint
Florida Building Code, Chapter 25 - Gypsum Board and Plaster, or manufacturer specifications for gypsum wallboard installation
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