The content of the Mechanics I textbook includes methods for determining stresses and strains in uniaxial members, column buckling loads, and a discussion of material properties and material behavior. Because we have included three topics not normally found in traditional Statics books, we have added the three plus signs to the subtitle Statics +++.

We introduced the concept of stresses in uniaxial members, because an analysis of the forces in some structural element is incomplete. Determining the force is not sufficient to establish the safety of the...