StructureCalcsST12X50
Structural Tee (from S) · AISC Shapes Database v15.0 · United States
ST12X50 is a structural tee cut from an S-shape 304.8 mm deep with a 184.2 mm wide flange, weighing 74.4 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
ST tees are cut from S-shapes and inherit the parent’s tapered flange, which the drawing here reproduces.
Analyse this section, or combine it with plates and other shapes.
Open ST12X50 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 304.8 mm | 12.00 in |
| Flange width, bf | 184.2 mm | 7.25 in |
| Flange thickness, tf | 22.1 mm | 0.870 in |
| Web thickness, tw | 18.9 mm | 0.745 in |
| Mass per metre | 74.4 kg/m | 50.0 lb/ft |
| Area, A | 9,484 mm² | 14.70 in² |
| Second moment, Ix | 89,489,757 mm⁴ | 215.0 in⁴ |
| Second moment, Iy | 9,864,685 mm⁴ | 23.7 in⁴ |
Derived section properties
Integrated from a square-cornered outline — the fillet radii this family really has are not drawn, so the computed values differ slightly from published. For ST12X50 the computed area is 0.69% from published and Ix 0.25%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 431,119 mm³ |
| Elastic modulus, Sy | 109,367 mm³ |
| Plastic modulus, Zx | 778,087 mm³ |
| Plastic modulus, Zy | 196,996 mm³ |
| Radius of gyration, rx | 97.4 mm |
| Radius of gyration, ry | 32.7 mm |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
Neighbouring sizes
Where these numbers come from
Published AISC Shapes Database v15.0 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API