| W: Thickness of web, mm. |
B: Width of flange , mm. |
D: Deppth of section, mm |
T: Thickness of flange, mm. |
| W: 13 |
B: 80 |
D:305 |
T: 12.7 |
| BT: Width-to-thickness ratio . |
HW: Depth-to-thickness ratio of web. |
K: Distance between outer face of flange and web-toe of fillet, mm. |
K1: Distance between middle line of web and flange-toe of fillet, mm. |
| BT: 6.3 |
HW: 21.5 |
K: 27 |
K1: |
| Dn_i: Nominal depth of section (Imperial units), in. |
Dnom: Nominal depth of section, mm. |
Mass: Mass per length, kg/m. |
Wt_i: Weight per length (Imperial units), lb/ft. |
| Dn_i: 12 |
Dnom: 310 |
Mass: 45 |
Wt_i: 30 |
| A: (Cross-sectional area, mm^2) |
J: St-Venant torsional constant, mm^4. |
Cw: Warping constant, mm^6. |
Sw: Warping statical moment, mm^4. |
| A: 5690 |
J: 360 |
Cw: 39.9 |
Sw: |
| Ix: Moment of inertia about axis XX, mm^4. |
Sx: Elastic section modulus about axis XX, mm^3. |
Rx: Radius of gyration about axis XX, mm. |
Sw: Plastic modulus about axis XX, mm^3. |
| Ix: 67.3 |
Sx: 442 |
Rx: 109 |
Zx: 2.12 |
| Iy: Moment of inertia about axis YY, mm^4. |
Sy: Elastic section modulus about axis YY, mm^3. |
Ry: Radius of gyration about axis YY, mm. |
Zy: Plastic modulus about axis YY, mm^3. |
| Iy: |
Sy: 33.6 |
Ry: 19.3 |
Zy: |
| Qf: Statical moment at point in flange in line with web face, mm^3. |
Qw: Statical moment at mid-depth in web, mm^3. |
SA: Surface area per metre, m. |
Section: Structural Member |
| Qf: |
Qw: |
SA: 0.904 |
Section: C310x45 |