Internal Load Diagrams: Structural Mechanics Exercises

This lecture focuses on the correction of exercises related to internal load diagrams in structural mechanics. The instructor begins by addressing exercise 8.1, which involves a frame supported by a roller and a pin, subjected to a line load. The goal is to draw the internal load diagrams and check the continuity of the bending moment at point C, as well as the equilibrium of internal forces. The instructor explains the calculations for the height between points A and B using the Pythagorean theorem and lists the reaction forces. The resultant force Q is calculated, and the instructor demonstrates how to compute the internal loads by making imaginary cuts in the frame. The lecture progresses to a quarter-circle arch under a line load, where the instructor computes the resultant force and reaction forces, followed by the internal loads using equilibrium equations. The final part of the lecture involves a dam structure, where the instructor finds the internal loads and moments, emphasizing the importance of equilibrium in structural analysis.