Q3. The double symmetric rectangular cross-section in Figure 3 is under compression of an axialload at the positions defined by P (at the black-filled circles). a. Calculate the area and second moment of area (moment of inertia) of the cross-section in the vertical and horizontal direction (Ixx and Iyy)(5 marks) b. Calculate the moments, Mx and My, produced about the principal axes X and Y by the eccentric load(5 marks) C. Calculate the axial stress produced because of the load d. Calculate the bending stresses produced by the moments Mx and My e. Calculate the combined direct stresses at the points (A) and (B)

Fig: 1

Fig: 2

Fig: 3

Fig: 4

Fig: 5

Fig: 6

Fig: 7