A nailing schedule specifies 16d common nails for wood framing. Which nail length is the common 16d length?
Correct Answer
A) 3-1/2 in.
A common 16d nail is 3-1/2 in. long. Other choices correspond to smaller penny sizes or a longer nonmatching nail.
Why This Is the Correct Answer
A common 16d nail is 3-1/2 in. long. Other choices correspond to smaller penny sizes or a longer nonmatching nail.
Why the Other Options Are Wrong
Option B: 2-1/2 in.
Choice B gives 2-1/2 in. Its specific error: 2-1/2 in. is a different published number than the cited Nail sizes value; Common nail penny sizes supports 3-1/2 in. The accepted answer is 3-1/2 in.
Option C: 3 in.
Choice C (3 in.) is rejected because 3 in. is a different published number than the cited Nail sizes value; Common nail penny sizes supports 3-1/2 in. The cited answer is 3-1/2 in.
Option D: 4 in.
In wood framing, 4 in. is the wrong selection for Nail sizes: 4 in. is a different published number than the cited Nail sizes value; Common nail penny sizes supports 3-1/2 in.
Memory Technique
Use a scope box memory cue for nail sizes: the stem's condition unlocks 3-1/2 in.
Reference Hint
Open Carpentry and Building Construction, 2016; use the index entry or section for "Common nail penny sizes" to confirm that A common 16d nail is 3-1/2 in.
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