Question $5(20$ points$)$

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Beam Design $1/4$: Section Modulus

A wood floor beam has a uniformly distributed dead load of $80$ pounds per foot and a live load of less than $7$ days' duration of $80$ pounds per foot on a span of $22$ feet. What is the required section modulus for the beam?

$110\mathrm{.}00$ inch ${?}^3$

$91\mathrm{.}00$ inch ${?}^3$

$111\mathrm{.}00$ inch ${?}^3$

$101\mathrm{.}00$ inch ${?}^3$