WT12×81 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.
WT12×81 measures 12 1/2 in. deep with a 13 in. flange, on a 11/16 in. web and 1 1/4 in. flanges.
At 81 lb per foot it is one of the 21 WT12 sizes, which run from 27.5 to 185 lb/ft.
For strong-axis bending its section modulus is Sx = 29.9 in³ and its moment of inertia Ix = 293 in⁴, with a plastic modulus Zx = 53.3 in³.
Detailing dimensions
| Depth (d) | 12 1/2" |
|---|---|
| Flange width (bf) | 13" |
| Web thickness (tw) | 11/16" |
| Flange thickness (tf) | 1 1/4" |
| k (detailing) | 2 1/2" |
| Workable gage (g) | 5 1/2" |
Section properties
| Weight | 81 lb/ft |
|---|---|
| Area (A) | 23.9 in² |
| Ix | 293 in⁴ |
| Sx | 29.9 in³ |
| Zx | 53.3 in³ |
| rx | 3.5 in |
| Iy | 221 in⁴ |
| Sy | 34.2 in³ |
| Zy | 52.6 in³ |
| ry | 3.05 in |
| J | 9.22 in⁴ |
Other WT12 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All WT12 sizes and dimensions →
Similar weight structural tees
Comparable 81 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 WT12×81 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Tees · Steel Beam Size Chart