UPN — Tapered Flange Channels
Cross-section properties of UPN tapered flange channel sections
| h | — | Overall depth |
| b | — | Flange width |
| tw | — | Web thickness |
| tf | — | Flange thickness |
| r1 | — | Root radius |
| r2 | — | Toe radius |
| d | — | Depth of straight portion of web |
| G | — | Mass per unit length |
| A | — | Cross-section area |
| ey | — | Distance from back of web to centroid |
| Iy | — | Second moment of area about y-axis |
| Iz | — | Second moment of area about z-axis |
| iy | — | Radius of gyration about y-axis |
| iz | — | Radius of gyration about z-axis |
| Wy | — | Elastic section modulus about y-axis |
| Wpl,y | — | Plastic section modulus about y-axis |
| Wz1 | — | Elastic section modulus about z-axis (back of web) |
| Wz2 | — | Elastic section modulus about z-axis (flange tip) |
| Wpl,z | — | Plastic section modulus about z-axis |
| Ay | — | Shear area parallel to y-axis |
| ySC | — | Distance from back of web to shear centre |
| Am | — | Surface area per unit length |