Brace $($Diagonal Tension Member in Middle$)$:

$-$ Design the brace $($tension member using C$-$shape$)$

$-$ Design the connection using weld$/$bolts

Tension forces:

PD$=15$ kips

PL$=10$ kips

Columns :

$-$Design Columns A and B

Column A:

PD$=20$ kips

PL$=200$ kips

Column B:

PD$=130$ kips

PL$=100$ kips

Beam $($Top$)$:

Dead Load: WD$=1\mathrm{.}0$k$/$ft

Live Load: WL$=2\mathrm{.}5$k$/$ft

L$=20,($braced at supports$)$