Lecture
This lecture discusses frames and joints, exploring the behavior of structures with different numbers of joints. It covers the determination of internal forces in frames with two, one, or no joints, and introduces a special type of frame known as a console frame. The instructor demonstrates how to analyze the forces acting within frames, considering asymmetric loads and the impact of joint numbers on the distribution of internal forces. Through examples of console frames resembling cranes, the lecture illustrates the effects of varying loads on different parts of the structure, highlighting the importance of understanding the position of pressure lines for accurate force analysis.