The box beam is subjected to the 26-kN force that is applied at the center of its

Question:

The box beam is subjected to the 26-kN force that is applied at the center of its width, 75 mm from each side. Determine the principal stresses at point A and show the results in an element located at this point. Use the shear formula to calculate the shear stress.

26 kN 13 12 - 2 m- 3 m 130 mm 75 mm 75 mm 130 mm| B 150 mm