chapter  11
Trusses and Cables
Pages 44

In addition, we will only discuss statically determinate trusses because they can be analyzed using trigonometry and the laws of equilibrium. A statically indeterminate truss is one in which the magnitude of the stresses are unsolvable using simple math because the load on a single member cannot be considered independently of the rest of the system. Statically indeterminate and three-dimensional trusses can be analyzed with the aid of computer programs and/or a professional engineer.