The billboard shown weighs 8000 lb and is supported by a structural tube that has a 10-in. outer diameter and a 0.5-in. wall thickness. At a time when the resultant of the wind pressure is 3 kips, located at the center C of the billboard, determine the normal and shearing stresses at point H. 3 kips 2 ft The normal stress is - The shearing stress is H 9 ft 18 kips ksi. ksi. 3 ft 3 ft 8 ft