H-sections, also known as H-beams or H-columns, are structural steel components shaped like the letter "H." They are widely used in construction and engineering due to their high strength-to-weight ratio, making them ideal for supporting heavy loads in buildings, bridges, and other structures. The design allows for efficient distribution of weight, providing stability and durability. These sections are typically made from steel and come in various sizes and thicknesses to suit different applications. H-sections are often used in steel frames, where they serve as vertical columns or horizontal beams, contributing to the overall integrity of the structure.