A person in the process of his development is constantly looking for the best materials for the manufacture of various tools, and in application in the construction of. Historians even gave the name of certain eras in the materials that people worked. Stone, bronze, and, finally, the Iron Age, which, in fact, continues to this day. It was iron that made it possible to make the strongest tools, make whitening buildings reliable.
It should be noted that it was the use of metal structures in construction that made it possible to build high -rise buildings. After all, metal today remains the strongest and most reliable material. Therefore, practically, all modern construction is based on the use of metal structures. There is currently no need to build a building for a long time, especially for industrial purposes. Now they can be quickly built using ready -made metal structures.