Which material is typically used for high-load bearing structures?

Metal is typically used for high-load bearing structures due to its exceptional strength-to-weight ratio and durability. It can withstand significant amounts of weight and stress, which makes it ideal for applications like beams, columns, and frameworks in buildings or bridges. Metals such as steel are especially favored for their tensile and compressive strength, allowing them to support heavy loads while maintaining structural integrity.

Other materials, while useful in various applications, do not match the load-bearing capabilities of metal. Wood, while strong in its own right, is limited in the amount of weight it can carry compared to metals and is more susceptible to environmental factors such as moisture and insects. Plastic, although lightweight and resistant to corrosion, lacks the strength needed for high-load applications. Glass, while aesthetically pleasing and used in façade designs, is not suitable for bearing loads due to its brittleness and tendency to fracture under stress. Thus, metal stands out as the most reliable choice for high-load bearing structures.