3. An I beam, built-in to the wall and cantilevered, has a downward force of 50 kN acting on the end of the beam at C. Find the bending stress

for point B which is located at the top of the bottom flange.b. Find the shear stress for point B.а.c. Find the principal stresses for point B.

Fig: 1

Fig: 2

Fig: 3