StructureCalcsWT18X128
Structural Tee (from W) · AISC Shapes Database v15.0 · United States
WT18X128 is a structural tee cut from a W-shape 475.0 mm deep with a 309.9 mm wide flange, weighing 190.5 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.
Analyse this section, or combine it with plates and other shapes.
Open WT18X128 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 475.0 mm | 18.70 in |
| Flange width, bf | 309.9 mm | 12.20 in |
| Flange thickness, tf | 43.9 mm | 1.730 in |
| Web thickness, tw | 24.4 mm | 0.960 in |
| Mass per metre | 190.5 kg/m | 128.0 lb/ft |
| Area, A | 24,258 mm² | 37.60 in² |
| Second moment, Ix | 503,640,026 mm⁴ | 1,210.0 in⁴ |
| Second moment, Iy | 109,885,097 mm⁴ | 264.0 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 WT18X128 the computed area is 0.55% from published and Ix 0.84%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 1,428,722 mm³ |
| Elastic modulus, Sy | 706,587 mm³ |
| Plastic modulus, Zx | 2,556,203 mm³ |
| Plastic modulus, Zy | 1,118,892 mm³ |
| Radius of gyration, rx | 143.9 mm |
| Radius of gyration, ry | 67.4 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