W27×129 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.
W27×129 measures 27 5/8 in. deep with a 10 in. flange, on a 5/8 in. web and 1 1/8 in. flanges.
At 129 lb per foot it is one of the 17 W27 sizes, which run from 84 to 539 lb/ft.
For strong-axis bending its section modulus is Sx = 345 in³ and its moment of inertia Ix = 4760 in⁴, with a plastic modulus Zx = 395 in³.
Detailing dimensions
| Depth (d) | 27 5/8" |
|---|---|
| Flange width (bf) | 10" |
| Web thickness (tw) | 5/8" |
| Flange thickness (tf) | 1 1/8" |
| k (detailing) | 2 5/16" |
| Workable gage (g) | 5 1/2" |
Section properties
| Weight | 129 lb/ft |
|---|---|
| Area (A) | 37.8 in² |
| Ix | 4760 in⁴ |
| Sx | 345 in³ |
| Zx | 395 in³ |
| rx | 11.2 in |
| Iy | 184 in⁴ |
| Sy | 36.8 in³ |
| Zy | 57.6 in³ |
| ry | 2.21 in |
| J | 11.1 in⁴ |
Other W27 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All W27 sizes and dimensions →
Similar weight wide-flange beams
Comparable 129 lb/ft sections in other wide-flange beam sizes.
Compare W27×129 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 W27×129 cut, formed, or fabricated? Huntington Steel & Supply Co.
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