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Selecting Beam Sections — an Intro to Design
Inside this lesson
- Compute the required section modulus from moment and allowable stress
- Select a standard section based on S_req and mass efficiency
- Explain why I-beams and box sections outperform solid rectangles
- Check that shear stress and deflection do not override the bending-stress selection
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Educational content covering topics typical of a first- and second-year mechanical engineering curriculum. Not a substitute for accredited coursework, and not suitable for real structural design without review by a licensed professional engineer.