CHS — Circular Hollow Sections
Cross-section properties of hot-finished circular hollow sections
| d | — | Outside diameter |
| t | — | Wall thickness |
| G | — | Mass per unit length |
| A | — | Cross-section area |
| Iy | — | Second moment of area |
| iy | — | Radius of gyration |
| Wy | — | Elastic section modulus |
| Wpl,y | — | Plastic section modulus |
| Ay | — | Shear area |
| It | — | Torsion constant |
| Wt | — | Torsion section modulus |
| Am | — | Surface area per unit length |