ST3x8.6
American standard tees from AISC Shapes Database v16.0. Also designated ST75X12.85.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 76.2 mm | 3 in |
| Flange width, b_f | 90.7 mm | 3.57 in |
| Web thickness, t_w | 11.8 mm | 0.465 in |
| Flange thickness, t_f | 9.12 mm | 0.359 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 882,000 mm⁴ | 2.12 in⁴ |
| Elastic modulus, Sₓ | 16,700 mm³ | 1.02 in³ |
| Plastic modulus, Zₓ | 30,300 mm³ | 1.85 in³ |
| Radius of gyration, rₓ | 23.2 mm | 0.915 in |
| Distance to top fibre | 23.2 mm | 0.915 in |
| Distance to bottom fibre | 53 mm | 2.085 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 475,000 mm⁴ | 1.14 in⁴ |
| Elastic modulus, S_y | 10,500 mm³ | 0.642 in³ |
| Plastic modulus, Z_y | 19,200 mm³ | 1.17 in³ |
| Radius of gyration, r_y | 17.1 mm | 0.673 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 75,300 mm⁴ | 0.181 in⁴ |
| Warping constant, C_w | 20,700,000 mm⁶ | 0.0772 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 12.9 kg/m | 8.6 lb/ft |