WT20×181 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.
WT20×181 measures 20 1/4 in. deep with a 16 in. flange, on a 1 1/8 in. web and 2 in. flanges.
At 181 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 = 122 in³ and its moment of inertia Ix = 1870 in⁴, with a plastic modulus Zx = 217 in³.
Detailing dimensions
| Depth (d) | 20 1/4" |
|---|---|
| Flange width (bf) | 16" |
| Web thickness (tw) | 1 1/8" |
| Flange thickness (tf) | 2" |
| k (detailing) | 3 1/4" |
| Workable gage (g) | 7 1/2" |
Section properties
| Weight | 181 lb/ft |
|---|---|
| Area (A) | 53.2 in² |
| Ix | 1870 in⁴ |
| Sx | 122 in³ |
| Zx | 217 in³ |
| rx | 5.92 in |
| Iy | 691 in⁴ |
| Sy | 86.3 in³ |
| Zy | 135 in³ |
| ry | 3.6 in |
| J | 54.2 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 181 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 WT20×181 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Tees · Steel Beam Size Chart