StructureCalcsWT12X31
Structural Tee (from W) · AISC Shapes Database v15.0 · United States
WT12X31 is a structural tee cut from a W-shape 302.3 mm deep with a 178.8 mm wide flange, weighing 46.1 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 | 302.3 mm | 11.90 in |
| Flange width, bf | 178.8 mm | 7.04 in |
| Flange thickness, tf | 15.0 mm | 0.590 in |
| Web thickness, tw | 10.9 mm | 0.430 in |
| Mass per metre | 46.1 kg/m | 31.0 lb/ft |
| Area, A | 5,877 mm² | 9.11 in² |
| Second moment, Ix | 54,526,317 mm⁴ | 131.0 in⁴ |
| Second moment, Iy | 7,159,181 mm⁴ | 17.2 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 WT12X31 the computed area is 1.02% from published and Ix 0.20%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 256,187 mm³ |
| Elastic modulus, Sy | 80,237 mm³ |
| Plastic modulus, Zx | 465,901 mm³ |
| Plastic modulus, Zy | 128,396 mm³ |
| Radius of gyration, rx | 96.9 mm |
| Radius of gyration, ry | 35.1 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