One of the biggest benefits of this category of metal is its load-bearing capacity. This is due to most common structural shapes having a high second moment of area and being stiff, which prevents sagging under large weights and forces. In addition to strength, structural steel is also typically less costly than other building materials, such as concrete, which often uses steel rebar to reinforce the material. Beyond practicality, structural steel also has a certain aesthetic appeal with its silver color and transparency of frame.
In terms of the modern era, where sustainability is often a topic of discussion, structural steel is the most recycled material on the planet. Incredibly, structural steel can be fully recycled after use and most steel in use contains around 90% recycled material, on average. Like with other building components, reliability and predictability are highly valued characteristics for not only safety but planning and budgeting as well. Steel again scores highly in this category, making it not only one of the strongest building materials, but also one of the cheapest, best-looking, environmentally friendly, and safest ways to make structures.
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