What is the maximum allowable span for 2×10 Douglas Fir floor joists spaced 16 inches on center, supporting a live load of 40 psf and dead load of 15 psf?
Correct Answer
C) 16 feet 2 inches
Based on standard span tables for Douglas Fir 2×10 joists at 16″ o.c. with total load of 55 psf (40 LL + 15 DL), the maximum span is approximately 16 feet 2 inches.
Why This Is the Correct Answer
Based on standard span tables for Douglas Fir 2×10 joists at 16″ o.c. with total load of 55 psf (40 LL + 15 DL), the maximum span is approximately 16 feet 2 inches.
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