WT8×20 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.
WT8×20 measures 8 in. deep with a 7 in. flange, on a 5/16 in. web and 1/2 in. flanges.
At 20 lb per foot it is one of the 11 WT8 sizes, which run from 13 to 50 lb/ft.
For strong-axis bending its section modulus is Sx = 5.35 in³ and its moment of inertia Ix = 33.1 in⁴, with a plastic modulus Zx = 9.43 in³.
Detailing dimensions
| Depth (d) | 8" |
|---|---|
| Flange width (bf) | 7" |
| 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) | 5.89 in² |
| Ix | 33.1 in⁴ |
| Sx | 5.35 in³ |
| Zx | 9.43 in³ |
| rx | 2.37 in |
| Iy | 14.4 in⁴ |
| Sy | 4.12 in³ |
| Zy | 6.36 in³ |
| ry | 1.56 in |
| J | 0.396 in⁴ |
Other WT8 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All WT8 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 WT8×20 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Tees · Steel Beam Size Chart