W14×398 wide-flange beam
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.
W14×398 measures 18 1/4 in. deep with a 16 5/8 in. flange, on a 1 3/4 in. web and 2 7/8 in. flanges.
At 398 lb per foot it is one of the 38 W14 sizes, which run from 22 to 873 lb/ft.
For strong-axis bending its section modulus is Sx = 656 in³ and its moment of inertia Ix = 6000 in⁴, with a plastic modulus Zx = 801 in³.
Detailing dimensions
| Depth (d) | 18 1/4" |
|---|---|
| Flange width (bf) | 16 5/8" |
| Web thickness (tw) | 1 3/4" |
| Flange thickness (tf) | 2 7/8" |
| k (detailing) | 4 1/8" |
| Workable gage (g) | 7 1/2" |
Section properties
| Weight | 398 lb/ft |
|---|---|
| Area (A) | 117 in² |
| Ix | 6000 in⁴ |
| Sx | 656 in³ |
| Zx | 801 in³ |
| rx | 7.16 in |
| Iy | 2170 in⁴ |
| Sy | 262 in³ |
| Zy | 402 in³ |
| ry | 4.31 in |
| J | 273 in⁴ |
Other W14 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All W14 sizes and dimensions →
Similar weight wide-flange beams
Comparable 398 lb/ft sections in other wide-flange beam sizes.
Compare W14×398 with a nearby size
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 W14×398 cut, formed, or fabricated? Huntington Steel & Supply Co.
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