At the end of this section you should be able to:

1. Recognize a problem as a “truss”-type problem

2. Formulate a “best” solution strategy for a truss problem

   • Start with external diagram

   • What section cuts or pins to draw

3. Properly create FBDs for method of pins and method of sections

4. Identify zero-force members in a truss by inspection

This section develops the essential skills for planar truss analysis in statics. You will learn how to recognize truss-type structures, choose an efficient solution strategy (external reactions first, then the best joints or section cuts), and draw correct free body diagrams for both the method of joints and the method of sections. You will identify zero-force members by inspection, solve for axial member forces in tension and compression, and handle design-style questions such as finding the maximum allowable applied load so that members do not exceed tension or compression limits, including cases that are statically determinate or statically indeterminate. Mathematica resources are included to help set up and solve the resulting equilibrium equations.