WT9×20 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.
WT9×20 measures 8 7/8 in. deep with a 6 in. flange, on a 5/16 in. web and 1/2 in. flanges.
At 20 lb per foot it is one of the 23 WT9 sizes, which run from 17.5 to 155.5 lb/ft.
For strong-axis bending its section modulus is Sx = 6.73 in³ and its moment of inertia Ix = 44.8 in⁴, with a plastic modulus Zx = 12 in³.
Detailing dimensions
| Depth (d) | 8 7/8" |
|---|---|
| Flange width (bf) | 6" |
| Web thickness (tw) | 5/16" |
| Flange thickness (tf) | 1/2" |
| k (detailing) | 1 3/16" |
| Workable gage (g) | 3 1/2" |
Section properties
| Weight | 20 lb/ft |
|---|---|
| Area (A) | 5.88 in² |
| Ix | 44.8 in⁴ |
| Sx | 6.73 in³ |
| Zx | 12 in³ |
| rx | 2.76 in |
| Iy | 9.55 in⁴ |
| Sy | 3.17 in³ |
| Zy | 4.97 in³ |
| ry | 1.27 in |
| J | 0.404 in⁴ |
Other WT9 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All WT9 sizes and dimensions →
Similar weight structural tees
Comparable 20 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 WT9×20 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Tees · Steel Beam Size Chart