A multi-storey building is a three-dimensional or lightweight steel structure building with multiple floors, which contains vertical circulation through elevators and stairs. Based on preliminary analysis and validation, a wide range of methods have been applied to these buildings of different heights. Multi-storey buildings are generally designed to be used as hospitals, shopping malls or apartments.

As an ideal solution for commercial buildings, multi-storey buildings can be built faster than other traditional buildings due to the use of a high level of material prefabrication, design precision, optimal quality checks, and risk-free construction.

1. Classification of multi-storey steel structure buildings:

Based on height, need, and various other factors, multi-storey buildings are classified into the following categories.

1. Low-rise buildings: low-rise multi-storey buildings, with few floors (usually less than four floors), using elevators and stairs for vertical circulation.

2. Mid-rise buildings: The number of floors of mid-rise buildings varies from 4 to 12 floors.

3. High-rise buildings: The number of floors of high-rise buildings ranges from 12 to 40 floors, using elevators and stairs.

4. Skyscraper: A tall and livable steel structure building with more than 40 floors but a height of less than 300m is considered a multi-storey skyscraper.

5. Super high-rise building: Super high-rise building refers to a steel structure building with a height of more than 300m, which belongs to a super high-rise multi-storey building.

6. Super high-rise building: Super high-rise building refers to a steel structure building with a height of more than 600m, which belongs to a super high-rise multi-storey building.

Second, the benefits of multi-storey buildings

· Cost-effectiveness: When a building is under construction, the cost of labor and equipment used is lower than that of other conventional buildings.

· Light weight: By using lightweight slabs and steel, the floors of multi-storey steel buildings are very lightweight, making these buildings impressive and making them lighter overall than other traditional buildings.

· Design freedom: One of the key features of multi-storey buildings is the freedom of their geometry, which makes them more creative than other traditional buildings.

· Mechanization of construction: Since steel is not only a building material but also has technical strength, the steel components used for the installation of multi-storey buildings are made with mechanized practices and high-precision software to achieve construction precision.

· Access to fire safety: These buildings are designed and constructed to ensure that adequate fire safety regulations are included to avoid a threat to life.

· Natural light and ventilation: Natural light and adequate ventilation can increase productivity. The multi-storey building provides a good range of natural light and ventilation.

· Solid Structure: Multi-storey PEB buildings are designed to meet the needs of a solid structure and even exhibit excellent seismic performance.