Problem $5\mathrm{.}22$ Select the tensile reinforcing noeded for the T beams if the reinforced concrete is assumed to weigh $150l\frac{b}{f}{t}^3$ and a live floor load of $140l\frac{b}{t^2}$ is to be supported. Assume $40-ft$ simple spans, $f_y=60,000,$ and $f_e^{\text{'}}=3000.$