A rectangular beam having b $=10$ in$.$ and d $=17\mathrm{.}5$ in$.$ spans $15$ ft face to face of simple supports. It is reinforced for flexure with three No$.9($No$.29)$bars that continue uninterrupted to the ends of the span. It is to carry servicedead load D $=1\mathrm{.}27$ kips$/$ft $($including self$-$weight$)$ and service live loadL $=3\mathrm{.}70$ kips$/$ft$,$ both uniformly distributed along the span. Design the shearreinforcement, using No$.3($No$.10)$ vertical U stirrups. Equation $(5\mathrm{.}12$c$)$ forV, may be used. Material strengths are fc $=4000$ psi and f$,=60,000$