$2.[$textbook $16-3]$ A tee bracket similar to Figure $16-11($reproduced below$)$ has $1/2-$in$-$thick A$572$ Grade $42$ steel welded with a $\backslash (3/16\backslash )$ in fillet weld along both inside corners using an E$70$ electrode. It will be subjected to a $20$ kip tensile load on the leg of the tee. Determine the minimum required length $\backslash ($ L $\backslash )$ of the bracket based on full$-$length welds. The ultimate strength of the A$572$ Grade $42$ steel plate is $70\mathrm{.}3$ kpsi $.$