$-6{10}^{-}$

hat$(A)=\frac{2}{240}$

fiNO MIN SIZE

$610$

$f_b=619$

$f_{r}610$

$$

$610$

${}_{\text{m}\text{a}\text{x}}610$

$A=523$

NEW SIZE ExTMA

CPAT

$f$

$$ gebat ExTra

$max$ Bxina

dean shear$/$moment Diagem cheoir

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$f_b=\frac{M}{S}=\frac{(1400)(12)}{{82\mathrm{.}7}^{1n}}=$