WT20×139 tee (cut from a wide-flange)
Detailing dimensions and section properties from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.
WT20×139 measures 20 in. deep with a 12 in. flange, on a 1 in. web and 1 13/16 in. flanges.
At 139 lb per foot it is one of the 24 WT20 sizes, which run from 74.5 to 327.5 lb/ft.
For strong-axis bending its section modulus is Sx = 106 in³ and its moment of inertia Ix = 1550 in⁴, with a plastic modulus Zx = 191 in³.
Detailing dimensions
| Depth (d) | 20" |
|---|---|
| Flange width (bf) | 12" |
| Web thickness (tw) | 1" |
| Flange thickness (tf) | 1 13/16" |
| k (detailing) | 3 1/16" |
| Workable gage (g) | 7 1/2" |
Section properties
| Weight | 139 lb/ft |
|---|---|
| Area (A) | 41 in² |
| Ix | 1550 in⁴ |
| Sx | 106 in³ |
| Zx | 191 in³ |
| rx | 6.14 in |
| Iy | 261 in⁴ |
| Sy | 43.5 in³ |
| Zy | 69.9 in³ |
| ry | 2.52 in |
| J | 32.4 in⁴ |
Other WT20 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All WT20 sizes and dimensions →
Similar weight structural tees
Comparable 139 lb/ft sections in other tee sizes.
Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need WT20×139 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Tees · Steel Beam Size Chart