Consider that dead load in the figure already includes the self-weight of the beam. a) Which load case (1,2 or 3), according to equations 5.3.1(a, b and c) in table

5.3.1 in ACI 3 18-19 (page 58), should be used for this structure? Justify your answer by calculating Mu for each case. b) Using the proper load case you determined for part "a", what is the required moment and shear that this beam should be designed for? Show all steps in the process that need to be shown. c) If you were then tasked to design this beam to go on the roof covering a sports stadium in Chicago, is the information given sufficient? What other considerations would you need to check for to satisfy Chapter 5 of ACI 318?