Design the cross sections of the following beam a. at the location 5ft from the left support b. at the location 15ft from the left support c. at the location 22.5 ft from the left support d. at the location of the maximum moment (hint: you need to find that location first) in your design assume a concentrated live load of 50 kips at 7.5 ft. from the left support, a distributed live load of 1.4 kip/ft, a dead load (not including the self-weight) of 1.5 kip/ft and consider two appropriate load combinations as discussed in class. select the appropriate beam dimensions and reinforcing bars if concrete of compressive strength of 5,000 psi and steel bars with yield strength of 60 ksi will be used. in your calculations of the moment demand include the self-weight of the beam.