There are some reasons for using steel instead of concrete in buildings.

1-) Steel is more advantageous than concrete and wooden structures with its strength, resistance and durability.

2-) It is compatible with badly grounded areas and occupies less space than the load it carries.

3-) Elongation, stretching and deformation under load can maintain its former strength when the loading is removed.

4-) Thanks to its flexible structure, it shakes but does not collapse during an earthquake, and since the walls of these structures are made of steel, only the columns and beams are not loaded and the risk of collapse is reduced.