StructureCalcsWT4X20
Structural Tee (from W) · AISC Shapes Database v15.0 · United States
WT4X20 is a structural tee cut from a W-shape 104.9 mm deep with a 205.0 mm wide flange, weighing 29.8 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
WT tees are W-shapes split at mid-depth — common truss chords and hangers, tabulated for the cut section.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 104.9 mm | 4.13 in |
| Flange width, bf | 205.0 mm | 8.07 in |
| Flange thickness, tf | 14.2 mm | 0.560 in |
| Web thickness, tw | 9.1 mm | 0.360 in |
| Mass per metre | 29.8 kg/m | 20.0 lb/ft |
| Area, A | 3,787 mm² | 5.87 in² |
| Second moment, Ix | 2,385,006 mm⁴ | 5.7 in⁴ |
| Second moment, Iy | 10,197,670 mm⁴ | 24.5 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 WT4X20 the computed area is 1.15% from published and Ix 0.31%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 27,760 mm³ |
| Elastic modulus, Sy | 99,636 mm³ |
| Plastic modulus, Zx | 52,996 mm³ |
| Plastic modulus, Zy | 151,264 mm³ |
| Radius of gyration, rx | 25.3 mm |
| Radius of gyration, ry | 52.2 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