Hollow sections in steel construction: why they’re a smart choice

Hollow sections, which include rectangular hollow sections (RHS), square hollow sections (SHS), and circular hollow sections (CHS), have become increasingly popular in modern steel fabrication due to their exceptional strength-to-weight ratio and aesthetic appeal. These steel sections, hollow in nature, offer both structural advantages and visual elegance, making them an ideal choice for a wide range of construction applications. Whether for structural support, architectural design, or the growing trend of sustainable buildings, hollow sections play a vital role in shaping the future of construction.

Manufacturing hollow sections typically involves a process called cold forming, where a flat steel plate is rolled into a tubular shape and welded to create a hollow profile. This process can be used for RHS, SHS, and CHS, providing a variety of shapes suited for different structural and architectural needs. Once formed, the hollow sections can be cut, welded, and assembled into larger structural frameworks. The strength of these sections comes from the fact that they distribute loads efficiently, with the hollow nature of the section reducing the overall weight while maintaining high structural integrity. The ability to create different shapes also makes hollow sections versatile and adaptable to a variety of designs.

One of the primary reasons hollow sections are increasingly being used in construction is their superior strength-to-weight ratio. The hollow core of these sections allows them to be lightweight yet incredibly strong, making them ideal for applications where both strength and efficiency are needed. This characteristic is particularly advantageous in large-scale projects where reducing the overall weight of the structure without compromising strength is essential. Hollow sections are also highly resistant to torsional forces, making them ideal for structures that are exposed to twisting and rotational stresses, such as bridges and high-rise buildings.

Uses of hollow sections in construction: structural support and beyond

Hollow sections are used extensively in steel construction, particularly for structural support and framing systems. The high strength and lightweight nature of hollow sections make them perfect for use in large and tall buildings. For example, in the construction of high-rise buildings, hollow sections are often used as columns and beams to support the weight of the structure while maintaining a sleek and modern appearance. Their high resistance to bending and torsion ensures that they can handle the stresses exerted by the weight of the building and external forces like wind and seismic activity.

In addition to their use in framing, hollow sections are also a popular choice for building facades. The smooth, clean lines and uniform geometry of these sections make them visually appealing and highly functional. Architects use hollow sections in the design of building exteriors to create a contemporary, minimalist aesthetic that complements modern architectural trends. The ability to easily integrate hollow sections into building facades allows for more design flexibility, which is especially important in projects where both form and function need to be balanced.

Hollow sections are also commonly used in bridge construction, where their ability to withstand torsional stresses and provide robust structural support is essential. In this context, circular hollow sections (CHS) are often favoured for their ability to distribute forces evenly and resist twisting. The smooth outer surface of CHS also helps reduce the accumulation of dirt, debris, and ice, which can be problematic for other types of sections. The use of hollow sections in bridges allows engineers to create lighter structures without compromising their load-bearing capacity, which is particularly important in large-scale infrastructure projects.

The aesthetic appeal and architectural advantages of hollow sections

In addition to their structural benefits, hollow sections are becoming increasingly popular for their aesthetic qualities. The smooth, clean lines of RHS, SHS, and CHS provide a modern, sleek look that is highly sought after in contemporary architecture. Their symmetrical shapes and uniform surface make them ideal for visible applications, especially in buildings and structures where the steel framework is exposed as part of the design.

Hollow sections can be used to create striking, visually appealing facades that make a bold architectural statement. Their ability to be cut and shaped into various lengths and configurations allows architects to experiment with different designs and layouts. Whether used in the creation of columns, beams, or external cladding, hollow sections add a layer of sophistication and modernity to the aesthetic of a building. This is particularly true in urban developments and commercial buildings, where visual appeal is just as important as structural functionality.

The versatility of hollow sections allows them to be integrated seamlessly into both modern and traditional building designs. For example, in more traditional structures, hollow sections can be used as part of the internal framework, offering all the structural benefits while maintaining the architectural integrity of the building. In contrast, in more innovative designs, hollow sections can become the focal point of the building’s exterior, highlighting the steel framework as an essential element of the overall aesthetic.

Hollow sections in modern, sustainable architecture

The growing trend of sustainable architecture has also contributed to the increasing use of hollow sections in steel construction. The lightweight nature of these sections means that less material is needed, which reduces the overall carbon footprint of the building project. Additionally, the use of hollow sections allows for the efficient distribution of weight, meaning that less steel is required to achieve the same structural strength. This can lead to significant reductions in both material costs and environmental impact.

Sustainability is further enhanced by the fact that steel is one of the most recyclable materials available. Steel can be reused and repurposed, which aligns with the principles of sustainable construction. Hollow sections, being made from steel, contribute to this circular economy by being fully recyclable at the end of their life cycle. As the construction industry continues to focus on reducing its environmental footprint, the use of hollow sections will likely increase as a means of achieving more sustainable, resource-efficient buildings.

Furthermore, hollow sections can be used to create innovative, energy-efficient designs. Their ability to withstand high forces while maintaining a low weight makes them ideal for use in passive and active energy systems, such as wind and solar energy structures. By utilising hollow sections in the design of energy-efficient buildings and infrastructure, architects and engineers are helping to shape the future of sustainable construction.

Hollow sections as a smart choice for the future of construction

Hollow sections – RHS, SHS, and CHS – are a smart choice for modern construction due to their exceptional strength-to-weight ratio, resistance to torsion, and aesthetic appeal. Whether used for structural support, architectural design, or sustainable construction, hollow sections offer a versatile and efficient solution for a wide range of projects. Their lightweight nature, combined with their strength and durability, makes them ideal for use in high-rise buildings, bridges, machinery, and more. As the construction industry continues to prioritise sustainability and design innovation, hollow sections are sure to play a significant role in the future of steel fabrication.

The growing use of hollow sections is a testament to their multifaceted benefits, combining practicality with modern design trends. With their ability to enhance both the function and aesthetics of a building, hollow sections will continue to be a smart and sustainable choice for architects, engineers, and builders around the world.