WT4x20 – WT Shapes

WT4x20 is a tee 4.13 in (105 mm) deep with an 8.07 in (205 mm) flange, weighing 20 lb/ft (29.8 kg/m).

WT shapes are structural tees produced by splitting a W shape lengthwise down the centre of its web, yielding a T-shaped cross-section with the flange width and thickness of the parent W shape. They're used as chords in trusses and open-web steel joists, as flanges welded to plate to build up girders and other custom sections, and anywhere a single wide bearing flange on a stem is more structurally efficient than a full I-shaped section — typically where only one face of the member needs to carry a bearing or connection load.

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Dimensions

PropertyValue
Nominal Weight (lb/ft)20.0
Depth of Section (in)4.13
Width of Section (in)8.07
Web Thickness (in)0.36
Flange Thickness (in)0.56
Kdet Dimension (in)1.25

Full sortable table: Dimensions table for this family

Section Properties

PropertyValue
Ix (in⁴)5.73
Zx (in³)3.25
Sx (in³)1.69
rx (in)0.988
Iy (in⁴)24.5
Zy (in³)9.24
Sy (in³)6.08
ry (in)2.04
J (in⁴)0.558
Cw (in⁶)0.715
ro (in)2.32
H (-)0.961

Full sortable table: Section properties table for this family