The senior engineer on our team decided that a precast, prestressed concrete beam is the best choice to support a uniform distributed load and two-point loads. To begin preliminary design of the beam,...

The senior engineer on our team decided that a precast, prestressed concrete beam is the best choice to support a uniform distributed load and two-point loads. To begin preliminary design of the beam, we need an estimate of the peak moment. a. Determine the peak moment considering only the uniform distributed load. Should this be an upper or lower bound on the solution, or can't it be determined? b. Determine the peak moment after converting all of the applied load into an equivalent point load at midspan. Should this be an upper or lower bound on the solution, or can't it be determined? c. Determine the peak moment after converting all of the applied load into an equivalent uniform distributed load. Should this be an upper or lower bound on the solution, or can't it be determined? d. Which of the peak moments determined in parts (a), (b), and (c) should be the most accurate? Justify your answer.