W24×84 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.
W24×84 measures 24 1/8 in. deep with a 9 in. flange, on a 1/2 in. web and 3/4 in. flanges.
At 84 lb per foot it is one of the 21 W24 sizes, which run from 55 to 370 lb/ft.
For strong-axis bending its section modulus is Sx = 196 in³ and its moment of inertia Ix = 2370 in⁴, with a plastic modulus Zx = 224 in³.
Detailing dimensions
| Depth (d) | 24 1/8" |
|---|---|
| Flange width (bf) | 9" |
| Web thickness (tw) | 1/2" |
| Flange thickness (tf) | 3/4" |
| k (detailing) | 2 1/16" |
| Workable gage (g) | 5 1/2" |
Section properties
| Weight | 84 lb/ft |
|---|---|
| Area (A) | 24.7 in² |
| Ix | 2370 in⁴ |
| Sx | 196 in³ |
| Zx | 224 in³ |
| rx | 9.79 in |
| Iy | 94.4 in⁴ |
| Sy | 20.9 in³ |
| Zy | 32.6 in³ |
| ry | 1.95 in |
| J | 3.7 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 84 lb/ft sections in other wide-flange beam sizes.
Compare W24×84 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 W24×84 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Wide flange beams · Steel Beam Size Chart