WT3×8 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.
WT3×8 measures 3 1/8 in. deep with a 4 in. flange, on a 1/4 in. web and 3/8 in. flanges.
At 8 lb per foot it is one of the 7 WT3 sizes, which run from 4.25 to 12.5 lb/ft.
For strong-axis bending its section modulus is Sx = 0.685 in³ and its moment of inertia Ix = 1.69 in⁴, with a plastic modulus Zx = 1.25 in³.
Detailing dimensions
| Depth (d) | 3 1/8" |
|---|---|
| Flange width (bf) | 4" |
| Web thickness (tw) | 1/4" |
| Flange thickness (tf) | 3/8" |
| k (detailing) | 7/8" |
| Workable gage (g) | 2 1/4" |
Section properties
| Weight | 8 lb/ft |
|---|---|
| Area (A) | 2.37 in² |
| Ix | 1.69 in⁴ |
| Sx | 0.685 in³ |
| Zx | 1.25 in³ |
| rx | 0.844 in |
| Iy | 2.21 in⁴ |
| Sy | 1.1 in³ |
| Zy | 1.69 in³ |
| ry | 0.966 in |
| J | 0.111 in⁴ |
Other WT3 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All WT3 sizes and dimensions →
Similar weight structural tees
Comparable 8 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 WT3×8 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Tees · Steel Beam Size Chart