In California wood frame construction, what is the maximum allowable span for 2x8 floor joists at 16 inches on center using Douglas Fir-Larch #2 grade lumber?
Correct Answer
A) 11 feet 10 inches
CBC Table 2308.8(1) shows that 2x8 Douglas Fir-Larch #2 joists at 16 inches on center can span 11 feet 10 inches for residential floor loads (40 psf live load, 10 psf dead load). This span table is critical for proper structural design in California construction.
Why This Is the Correct Answer
CBC Table 2308.8(1) shows that 2x8 Douglas Fir-Larch #2 joists at 16 inches on center can span 11 feet 10 inches for residential floor loads (40 psf live load, 10 psf dead load). This span table is critical for proper structural design in California construction.
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