$6\mathrm{.}18$ Given: The floor beam in Figure $6.$C with the followino information.

Load: $$

$P_D=400lb$

$P_L=1600lb$

$D+L(ASD)$

Load combination:

$1\mathrm{.}2D+1\mathrm{.}6L(LRFD)$

Span: $$

$L_1=8ft$

$L_2=4ft$

$412$

Member size: $$

Stress grade and species:

Sel. Str$.$ SP

Unbraced length:

$l_n=0$

Moisture content: $$

MC $19$ percent

Live load deflection limit:

Allow. ${}_{\text{f}\text{r}\text{e}\text{e}\text{e}\text{n}\text{d}}\frac{L_2}{180}$

Allow. ${}_{\text{b}\text{e}\text{t}\text{w}\text{e}\text{e}\text{n}\text{s}\text{u}\text{p}\text{p}\text{o}\text{r}\text{t}\text{s}}\frac{L_1}{360}$

a$.$ Size category $($Dimension lumber, $B$&$S,$ or $P$&$T)$

b$.$ Reference design values: $F_b,F_y,$ and $E$

c$.$ Adjusted ASD values: $F_b^{\text{'}},F^{\text{'}},{?}_v$ and $E^{\text{'}}$

d$.$ Actual stresses $($ASD$)$ and deflection: $f_b,f_v,$ and $$

e$.$ Compare the actual stresses and adjusted design values, and determine if the member is adequate

$($ASD$).$