S24×80 standard 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.
S24×80 measures 24 in. deep with a 7 in. flange, on a 1/2 in. web and 7/8 in. flanges.
At 80 lb per foot it is the lightest of the 5 S24 sizes, which run from 80 to 121 lb/ft.
For strong-axis bending its section modulus is Sx = 175 in³ and its moment of inertia Ix = 2100 in⁴, with a plastic modulus Zx = 204 in³.
Detailing dimensions
| Depth (d) | 24" |
|---|---|
| Flange width (bf) | 7" |
| Web thickness (tw) | 1/2" |
| Flange thickness (tf) | 7/8" |
| k (detailing) | 1 3/4" |
| Workable gage (g) | 4" |
Section properties
| Weight | 80 lb/ft |
|---|---|
| Area (A) | 23.5 in² |
| Ix | 2100 in⁴ |
| Sx | 175 in³ |
| Zx | 204 in³ |
| rx | 9.47 in |
| Iy | 42 in⁴ |
| Sy | 12 in³ |
| Zy | 20.8 in³ |
| ry | 1.34 in |
| J | 4.89 in⁴ |
Other S24 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
Similar weight standard beams
Comparable 80 lb/ft sections in other standard beam 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 S24×80 cut, formed, or fabricated? Huntington Steel & Supply Co.
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