A two$-$span continuous concrete beam is to be supported by three $12$ in wide concrete walls spaced $30$ ft on centers. A service live load of $1\mathrm{.}5$kip$\frac{s}{f}t$ is to be carried in addition to the sel weight of the beam. Consider the live load on both spans. A constant rectangular cross secti is to be used with $d=2b,$ but reinforcement is to be varied according to requirements. Find $t$ required concrete dimensions and reinforcement at all critical sections, using a maximum ten reinforcement ratio of $0\mathrm{.}006.$ Allow for No$.3$ stirrups. Adjust the depth if the reinforcement ratio is too high. Include sketches, drawn to scale, of the critical sections. Use fy $=60,000$pSi and $f^{\text{'}}c=6,000$ psi.