This monograph presents theoretical and experimental studies alongside the design and construction features of structural systems with rational parameters. It begins by addressing issues related to topological (bionic) optimization of structures and proposes solutions. The computational compiler supporting this approach integrates the finite element method with the adaptive evolution method, outlining new energy principles that advocate for the methodology. Experimental verification of the solutions is conducted using innovative testing methods for assessing the effects of force and temperature on structures. The theoretical studies offer a framework for evaluating the technical condition, durability, and service life of these structures. Specific design and construction features of systems developed through this approach are detailed, including new reinforced-concrete, steel-reinforced-concrete, and steel systems, along with associated manufacturing and construction technologies. The book showcases designs for buildings, structures, and both pedestrian and road bridges, citing examples of completed projects. It also addresses the design challenges of large-span suspension systems with rational parameters. This manual is aimed at engineers and researchers involved in the creation, study, design, and construction of engineering structures, and it may also serve as a useful resource for structural and civil engineering educators
