The $12-$ft$-$span cantilever beam shown below has a rectangular cross$-$section and carries a uniform factored load $($self$-$weight is included$).$ Design the shear reinforcement required for the entire length of the beam. Make at least one change in the design somewhere at midspan $($i$.$e$.,$ change the size of the stirrups and$/$or increase the spacing$).$ Start your design with #$4,$ double$-$leg, closed stirrups. Do all necessary checks to achieve a good design. Assume: $f_c^{\text{'}}=4000$ psi, Grade $60$ steel.

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