A steel structure is a metal structure made of structural steel. The components are connected to each other for load-bearing and full strength.
due to high-strength steel This structure is reliable and requires fewer raw materials than other structures, such as concrete and wooden ones.
In modern construction,steel structures are used for almost all types of structures. Including heavy industrial buildings, high-rise buildings, equipment support systems, infrastructure, bridges, towers, airport terminals, pipe racks, etc.

Steel structures, including substructures or parts of buildings, are made of steel. Structural steel is a building material made of steel. which are made to a specific shape and chemical composition to suit the use of each project

The main ingredients of structural steel are iron and carbon, manganese, alloys, and some chemicals. Added to steel and carbon to increase strength and durability.

Depending on the requirements of each steel structure construction project It is formed by hot or cold rolling. or made by welding flat sheets or bent them together

Steel structures come in many shapes, sizes, and specifications. The most common shapes are I-beams, rails, and angles.

- I-Beam: I-shaped cross-sectional shape
- Z-Shape: looks like a Z, with only half of the wings protruding in opposite directions.
- HSS-Shape: Hollow-section structure including rectangular, circular (tube), and oval cross-sections.
- Angle: steel with an L-shaped cross-section
- Gutter structure, channel: C-shaped beam or C-shaped cross-sectional steel
- Tee: T-shaped section steel
- Railway System: Steel parts are used to assemble all railway tracks.
- Bar: A piece of metal, a rectangular section of steel that is long but not wide, is called a plate.
- Rod: A piece of metal in the shape of a circle or square, of any length; construction rebar; dowel.
- Plate: metal plate thicker than 4 mm.

type of main structure

- truss structure: bar or truss parts
- Building frame structure: beams and columns
- grid structure: slat or dome structure
- curved structure
- Prestressed concrete structure
- girder bridge
- truss bridge : a piece of truss
- arch bridge
- Cable-stayed bridge
- suspension bridge