steelframe

Steelframe refers to a building or structural system in which the primary load-bearing elements are steel columns and beams arranged to form a rigid framework. The steel frame supports floors, roofs, and non-load-bearing walls, while external and internal walls can be attached to the frame as cladding or infill panels. The term is commonly used to describe steel-framed construction, though it may appear fused as steelframe in some documents.

Construction and components include structural steel shapes such as wide-flange beams, columns, and hollow sections connected by bolts or welding. Subfloors often use metal decking topped with concrete. Connections are designed to transfer gravity and lateral loads through the frame, while fireproofing and corrosion protection are applied as needed. Design follows national or international codes, such as the AISC standards in the United States or Eurocodes elsewhere.

History and use: Steel framing emerged in the late 19th century with the ascent of skyscrapers and has become a dominant method for mid- to high-rise construction worldwide. It enables long spans, large openings, faster erection, and easier prefabrication compared with traditional timber or masonry frames. In addition to buildings, steel frames are used in bridges and other industrial structures.

Advantages and considerations: Steel frames offer a high strength-to-weight ratio, stiffness, and design flexibility, allowing rapid construction and efficient integration of services. Limitations include higher initial material costs relative to some alternatives, the need for skilled fabrication, ongoing fire protection requirements, and potential corrosion or thermal bridging if not properly treated and insulated. Seismic design is also an important consideration in many regions.