The main points of form finding and designing structure systems from the steel-concrete grid-cable composite constructions

There are a need to find effective structural systems including shells in today conditions of the development of scientific and technological advances and the growth of social needs. The main requirements imposed on shells or its parts except reliability and the required bearing capacity are an architectural view, aesthetics, ergonomics and high indicators of efficiency. Use of reliable and modern materials to search and designing of the new structural concept is an important issue. Steels, modern concretes with various fillers and composites belong to the materials that meet the stated requirements. The effectiveness of the developed structures depends on the usage of these materials and their conditions of behavior it means that materials need to be under pressure of the forces, which they resistance well this means steel needs to use in stretched or compressed elements and concrete needs to use in compressed. Considering this, the decision to combine the space grid and slabs in an integral space design and further its research to a wide implementation in practice of domestic and foreign construction are relevant and promising direction of building structures. Methodology. Based on theoretical studies of the current state of construction and space steel and concrete composite structures identify the most promising and effective designs. Given the physical and mechanical properties of materials and properties of structural elements offer and develop a new type of space coverings. Findings. Proposed and developed new space structures ? steel-concrete grid-cable composite shells with the release of their main advantages and design features. Originality. The new efficient construction shells that appointment for covering large-span buildings and areas. Practical value. Developed steel and concrete composite grid-gable roofs appointment for industrial and civil construction. Applications developed designs for the construction of large-span covering objects provides a significant economic benefit through the efficient use of materials.