How many $24$ jack studs are required at each end of a wood beam that carries a

Southern uniform load of $800$ plf over a ${15}^{\text{'}}$ span with a ${10}^{\text{'}}$ vertical clearance. The lumber is Yellow Pine No$.2$ SYP where $F_b=1,200,F_V=80,$ and $E=1\mathrm{.}75{10}^6.$ The jack studs are nailed together sufficiently to perform as a composite section. Neglect any bearing capacity provided by the adjacent king studs.

$F_{bs}=\frac{3E}{(1\frac{v}{d^2})}$ lecost dimenson