The simply supported rectangular concrete beam shown supports factored concentrated loads of $23$ kips that are applied at the fourth points of the beam in addition to its self$-$weight. The clear span of the beam is $36$ ft $.$ Design the shear reinforcement for the beam. Use No$.3$ U$-$shaned stirrups. Use $f_c^{\text{'}}=4$ksi and $f_y=60$ksi. Sketch the design