Practice

Sawn-lumber 2×10 floor joists (actual size 1.5 in. × 9.25 in.) at 16 in. on center span 14 ft, simply supported. The floor dead load, including the joists, is 12 psf and the floor live load is 40 psf. The adjusted allowable bending stress is $F_b' = 1{,}100$ psi. Under the full dead plus live load, the maximum bending stress in a joist is most nearly:

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