Section Properties Calculator
Every property shown is read directly from the Steel Beam Design section library.
Section Properties
HEA200| Area, A | 5383 | mm² |
| Centroid, x̄ (from left edge) | 100.0 | mm |
| Centroid, ȳ (from bottom edge) | 95.0 | mm |
| Moment of inertia, Ix | 36.920 | ×10⁶ mm⁴ |
| Moment of inertia, Iy | 13.360 | ×10⁶ mm⁴ |
| Section modulus, Sx | 388.60 | ×10³ mm³ |
| Section modulus, Sy | 133.60 | ×10³ mm³ |
| Radius of gyration, rx | 82.8 | mm |
| Radius of gyration, ry | 49.8 | mm |
| Plastic modulus, Zx | 429.50 | ×10³ mm³ |
| Plastic modulus, Zy | 203.80 | ×10³ mm³ |
| Torsion constant, J (approx.) | 0.210 | ×10⁶ mm⁴ |
Every value on this row is read directly from the Steel Beam Design section library — none of it is recomputed by this tool.
Standard sections reuse the Steel Beam Design library directly. Custom shapes use exact closed-form geometry (area, centroid, moment of inertia, section/plastic modulus) except where noted — torsion constant J for open built-up shapes (I, channel, angle, T) uses the standard Σ(b·t³)/3 thin-walled approximation, and J for the rectangular tube uses Bredt's thin-walled closed-tube approximation. Verified against hand calculations, published code tables and textbook examples. For real projects, have a licensed engineer review the results.
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