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Structural steel is a category of steel used for making construction materials in a variety of shapes. Many structural steel shapes take the form of an elongated beam having a profile of a specific cross section. Structural steel shapes, sizes, chemical composition, mechanical properties such as strengths, storage practices, etc., are regulated by standards in most industrialized countries.
Most structural steel shapes, such as Ɪ-beams, have high second moments of area, which means they are very stiff in respect to their cross-sectional area and thus can support a high load without excessive sagging.[1]
- ^ Alread, Jason; Leslie, Thomas; Whitehead, Rob (21 March 2014). "Beams: Shape and Strength". Design-Tech. pp. 282–300. doi:10.4324/9781315817057. ISBN 9781315817057.