Analysis of "T" formation with man-in-motion, preliminary formations, triple flanker and flankers, semispread and spreads, triple wing back, illustrated with action photographs, also suggested defenses

These three equations are used in addition to the 2j equations at the joints. Since there are only 2j unknown forces, three of the equations are not necessary for finding the unknowns, but should always be used for checking the numerical work. The analysis of a truss by the method of joints will be illustrated by a numerical example.