(Solved): Figure P6-9 shows an interior span of a continuous beam. The shears at the ends are \( \left\{w_{u ...

Figure P6-9 shows an interior span of a continuous beam. The shears at the ends are \( \left\{w_{u} l_{n} / 2\right. \). The shear at midspan is from Eq. (6-22). (a) Draw a shear-force envelope. (b) Design stirrups, using \( f_{c=}=4000 \mathrm{psi} \) and \( f_{y t}=40,000 \) psi.