W8×48 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.
W8×48 measures 8 1/2 in. deep with a 8 1/8 in. flange, on a 3/8 in. web and 11/16 in. flanges.
At 48 lb per foot it is one of the 13 W8 sizes, which run from 10 to 67 lb/ft.
For strong-axis bending its section modulus is Sx = 43.2 in³ and its moment of inertia Ix = 184 in⁴, with a plastic modulus Zx = 49 in³.
Detailing dimensions
| Depth (d) | 8 1/2" |
|---|---|
| Flange width (bf) | 8 1/8" |
| Web thickness (tw) | 3/8" |
| Flange thickness (tf) | 11/16" |
| k (detailing) | 1 3/8" |
| Workable gage (g) | 5 1/2" |
Section properties
| Weight | 48 lb/ft |
|---|---|
| Area (A) | 14.1 in² |
| Ix | 184 in⁴ |
| Sx | 43.2 in³ |
| Zx | 49 in³ |
| rx | 3.61 in |
| Iy | 60.9 in⁴ |
| Sy | 15 in³ |
| Zy | 22.9 in³ |
| ry | 2.08 in |
| J | 1.96 in⁴ |
Other W8 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
Similar weight wide-flange beams
Comparable 48 lb/ft sections in other wide-flange beam sizes.
Compare W8×48 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 W8×48 cut, formed, or fabricated? Huntington Steel & Supply Co.
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