Gypsum board is being screw-attached to wood studs on a wall, away from panel edges. What maximum field screw spacing is commonly used for wall panels?
Correct Answer
D) 16 in. on center
Common gypsum-board application guidance uses 16 in. maximum screw spacing in the field of wall panels. Other choices are tighter spacings used at edges or ceilings, or nonmatching values.
Why This Is the Correct Answer
Common gypsum-board application guidance uses 16 in. maximum screw spacing in the field of wall panels. Other choices are tighter spacings used at edges or ceilings, or nonmatching values.
Why the Other Options Are Wrong
Option A: 8 in. on center
Choice A gives 8 in. on center. Its specific error: 8 in. on center is a different published number than the cited Wallboard screw spacing value; Gypsum board screw spacing for wall fields supports 16 in. on center. The accepted answer is 16 in. on center.
Option B: 10 in. on center
Choice B (10 in. on center) is rejected because 10 in. on center is a different published number than the cited Wallboard screw spacing value; Gypsum board screw spacing for wall fields supports 16 in. on center. The cited answer is 16 in. on center.
Option C: 12 in. on center
In finishes, 12 in. on center is the wrong selection for Wallboard screw spacing: 12 in. on center is a different published number than the cited Wallboard screw spacing value; Gypsum board screw spacing for wall fields supports 16 in. on center.
Memory Technique
Link wallboard screw spacing to its book condition; a different condition means a different answer than 16 in. on center.
Reference Hint
Open Gypsum Construction Handbook, 7th Ed., 2014; use the index entry or section for "Gypsum board screw spacing for wall fields" to confirm that Common gypsum-board application guidance uses 16 in.
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