Intro to Millwright 2025 – 400 Free Practice Questions to Pass the Exam

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What type of beam has a hollow square or rectangular cross section?

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Hollow

Box

A beam with a hollow square or rectangular cross section is known as a box beam. Box beams are designed with a closed shape, which gives them structural advantages, such as improved resistance to bending and torsion compared to solid beams. This hollow construction allows for a lighter beam while maintaining significant strength and rigidity, making them suitable for a variety of applications in construction and mechanical systems. The uniformity of their cross-section aids in distributing stresses evenly, enhancing their load-carrying capabilities. Box beams are commonly used in applications such as bridge construction, frameworks, and support structures where both strength and weight efficiency are crucial.

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