StructureCalcsST2X3.85
Structural Tee (from S) · AISC Shapes Database v15.0 · United States
ST2X3.85 is a structural tee cut from an S-shape 50.8 mm deep with a 67.6 mm wide flange, weighing 5.7 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.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 50.8 mm | 2.00 in |
| Flange width, bf | 67.6 mm | 2.66 in |
| Flange thickness, tf | 7.4 mm | 0.293 in |
| Web thickness, tw | 4.9 mm | 0.193 in |
| Mass per metre | 5.7 kg/m | 3.9 lb/ft |
| Area, A | 729 mm² | 1.13 in² |
| Second moment, Ix | 127,783 mm⁴ | 0.3 in⁴ |
| Second moment, Iy | 155,671 mm⁴ | 0.4 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 ST2X3.85 the computed area is 1.91% from published and Ix 2.83%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 3,332 mm³ |
| Elastic modulus, Sy | 4,756 mm³ |
| Plastic modulus, Zx | 6,235 mm³ |
| Plastic modulus, Zy | 7,896 mm³ |
| Radius of gyration, rx | 13.6 mm |
| Radius of gyration, ry | 15.0 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