The member shown is supported by two bearings (simple supports) at O and D. It is made of AISI 1020 cold drawn steel. The dimensions are OC-60 cm, CD=40 cm, BC=50 cm, and AB=30 cm. Two-equal torques are acting near O and D, in addition to two forces at A and B as shown. Given that the member is stationary while the loads as repeated (torques and forces): a) Draw all loading diagrams for OCD and find the most critical point. b) Find a suitable diameter for beam OCD based on a design factor of 2 (for both static yielding and infinite life fatigue). What is the realized factor of safety? Use Soderberg theory for fatigue and Langer theory for yielding. 1 KNY 1.5 KN