Precast concrete products - linear structural elements

Precast concrete products – linear structural elements refer to beams and columns. Prefabricated reinforced linear structural elements are produced in a variety of sizes, shapes, and length. Usually, the surface of the elements is smooth, and edges are chamfered. The cross-sections of the rectangular elements can be from 300x300 mm to 1000x1000 mm. The diameter of circular elements is available from 250 mm to 800 mm. Elements of other cross-sectional shapes, such as e.g., polygonal, oval, etc. are produced according to special orders. Concrete grades from C30/37 to C55/67 are used in the production. Fire resistance of elements - 30-120 min. The fact that reinforced concrete structural elements have high fire resistance index without use of additional materials allows to use them in various projects. Linear structural elements lengths can reach 40 m as one unit. But generally, elements with a maximum length up to 13,5 m are produced. Such length is limited by rules of transportation without special permits and lifting capacity of tower cranes at building sites. For higher buildings compound elements are used. Columns can have corbels or structural inserts to provide support for beams. There are three possible column-foundation connection types: - bolt connection, - grouted connection, - pocket foundations.