Tag: steel section properties
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Centroid vs. Geometric Center in Structural Steel Shapes: Choosing the Correct Reference
Learn why a steel shape’s centroid may not match its overall geometric center and how that difference affects axes, dimensions, modeling, and detailing.
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Elastic vs. Plastic Section Modulus in Steel Shape Tables: Understanding S, Z, and Shape Factor
Learn how elastic section modulus S and plastic section modulus Z differ, how each is calculated, and how to read them correctly in structural steel shape tables.
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Compact, Noncompact, and Slender Steel Sections: Understanding Local Buckling Classification
Learn how compact, noncompact, and slender steel classifications relate to flange, web, HSS, and angle local buckling—and why KL/r is different.
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Why CAD-Calculated Steel Section Properties May Not Match Published Shape Tables
Learn why area, centroid, inertia, and other properties calculated from CAD profiles can differ from published structural steel shape tables.
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Elastic vs. Plastic Section Modulus: S and Z in Steel Shape Tables
Learn the difference between elastic section modulus S and plastic section modulus Z, how each relates to steel shape geometry, and how to read them in section tables.
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Radius of Gyration in Steel Shape Tables: Understanding rx, ry, and Slenderness
Learn what rx and ry mean in structural steel shape tables, how radius of gyration relates to moment of inertia, and why it matters in column slenderness.
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How to Read a W-Shape Steel Section Table
Learn how W-shape steel designations work and how to interpret depth, weight, axes, section properties, and CAD reference data.
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