Which material is preferred for a strong building frame?

Steel is the preferred material for a strong building frame due to its exceptional strength-to-weight ratio, which provides both durability and stability. It can withstand significant loads while being relatively lightweight, making it an ideal choice for structural applications. Steel is also highly resilient, able to endure various environmental conditions without compromising its structural integrity.

Additionally, steel frames can be prefabricated, allowing for faster construction times and reduced on-site labor costs. Its capacity to be molded into different shapes also offers flexibility in design, enabling architects and engineers to create innovative structures. Steel's fire resistance further enhances its attractiveness as a building material, making it suitable for high-rise buildings and other large constructions.

While plastic, glass, and cardboard may have applications in construction, they do not provide the same level of strength and durability that steel offers for load-bearing structural frameworks.