Modern technical developments in construction have provided many types of building materials that have had a positive impact on construction and reconstruction methods. Starting with cast iron, moving to wrought iron, then steel, which has become one of the most commonly used metals in construction work. In this article, we will learn what metal is. Steel and the advantages and disadvantages of steel buildings, then we will move on to see the most famous steel structures around the world.

Advantages and disadvantages of steel buildings

1. Lightweight and high bearing capacity steel structure: It is a lightweight, high-strength material.
2. The steel mouth is close to an isotropic body: the steel is divided into small pieces, each piece has almost the same mechanical properties, and the properties in all directions are almost the same, which is the foundation of solid mechanics.
3. Good ductility and hardness of steel: Under static load, steel has good plastic deformation ability.
4. Steel has good welding performance: The so-called “good” welding performance refers to the property that enables the steel to maintain the integrity of the welded part without cracking during and after welding.
5. The steel structure has the characteristics of no leakage: Whether welded, riveted or bolted, the steel structure can be sealed without leakage.
6. Factory steel structure manufacturing and assembly-based construction: light components, convenient construction, small site occupancy, short construction period, easy demolition, reinforcement, reconstruction and expansion.
7. Poor corrosion resistance of steel: Steel is easy to rust in environments with high humidity and corrosive media, and the section is constantly weakened, which is damaging to the structure and affects the service life. Therefore, the steel structure needs regular maintenance.
8. The steel structure has good heat resistance, but the fire resistance is poor: experiments have shown that the performance of steel does not change much from room temperature to 150 degrees. To improve the fire resistance rating of steel structures, the fire resistance limit of steel components is 1.5 hours when the fireproof coating thickness is 15mm.