The computing of structures composed of materials with rheological properties proposes a mathematical model for the evaluation of the behavior in time of resistance structures composed of materials having viscoelastic rheological properties. The relatively simple mathematical expressions of the constitutive laws of these materials correspond to a model which reflects with sufficient accuracy the materials' deformability properties. This book presents the evolution of the mathematical models used to calculate the resistance structures and the conditions which enable progress to be made in this field.The author presents equations describing the behavior of each possible type of resistance structure (with discrete collaboration, continuous collaboration and complex composition). These equations are then redefined in the particular concrete form for each type of structure, by using the notions and known parameters from the construction's statics. The mathematical models are then tested using practical case studies.