Fundamentals of elasticity theory. Methods of calculation of thin-walled rods of closed and open profiles are given. The simplest problems in the field of tension-compression and bending are considered. Approximate dependencies for the rate of deformations of the body in the plastic state are justified. Attention is paid to the theory of creep of structural materials, that is, the change in time of deformations and stresses arising as a result of the initial loading of its parts. For students of higher educational institutions studying in the direction of training "Construction," as well as for design engineers.