StructureCalcsWT8X18
Structural Tee (from W) · AISC Shapes Database v15.0 · United States
WT8X18 is a structural tee cut from a W-shape 201.4 mm deep with a 177.6 mm wide flange, weighing 26.8 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 | 201.4 mm | 7.93 in |
| Flange width, bf | 177.6 mm | 6.99 in |
| Flange thickness, tf | 10.9 mm | 0.430 in |
| Web thickness, tw | 7.5 mm | 0.295 in |
| Mass per metre | 26.8 kg/m | 18.0 lb/ft |
| Area, A | 3,413 mm² | 5.29 in² |
| Second moment, Ix | 12,736,682 mm⁴ | 30.6 in⁴ |
| Second moment, Iy | 5,078,023 mm⁴ | 12.2 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 WT8X18 the computed area is 1.38% from published and Ix 0.52%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 82,673 mm³ |
| Elastic modulus, Sy | 57,449 mm³ |
| Plastic modulus, Zx | 146,124 mm³ |
| Plastic modulus, Zy | 88,732 mm³ |
| Radius of gyration, rx | 61.4 mm |
| Radius of gyration, ry | 38.9 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