Question: A building frame is made with a 10” square steel box shape that has an area of 15 in^2 and a moment of inertia I =225 in^4. The frame consists of pinned supports at points A and F and an internal pin at point D. If the frame is subject to the two 10 kip point loads at points C and E, determine the normal stress on the outside of the
frame, at point B.  Edit