W24×55 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.
W24×55 measures 23 5/8 in. deep with a 7 in. flange, on a 3/8 in. web and 1/2 in. flanges.
At 55 lb per foot it is the lightest of the 21 W24 sizes, which run from 55 to 370 lb/ft.
For strong-axis bending its section modulus is Sx = 114 in³ and its moment of inertia Ix = 1350 in⁴, with a plastic modulus Zx = 134 in³.
Detailing dimensions
| Depth (d) | 23 5/8" |
|---|---|
| Flange width (bf) | 7" |
| Web thickness (tw) | 3/8" |
| Flange thickness (tf) | 1/2" |
| k (detailing) | 1 7/16" |
| Workable gage (g) | 3 1/2" |
Section properties
| Weight | 55 lb/ft |
|---|---|
| Area (A) | 16.2 in² |
| Ix | 1350 in⁴ |
| Sx | 114 in³ |
| Zx | 134 in³ |
| rx | 9.11 in |
| Iy | 29.1 in⁴ |
| Sy | 8.3 in³ |
| Zy | 13.3 in³ |
| ry | 1.34 in |
| J | 1.18 in⁴ |
Other W24 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All W24 sizes and dimensions →
Similar weight wide-flange beams
Comparable 55 lb/ft sections in other wide-flange beam sizes.
Compare W24×55 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 W24×55 cut, formed, or fabricated? Huntington Steel & Supply Co.
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