W30×261 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.
W30×261 measures 31 5/8 in. deep with a 15 1/8 in. flange, on a 15/16 in. web and 1 5/8 in. flanges.
At 261 lb per foot it is one of the 16 W30 sizes, which run from 90 to 391 lb/ft.
For strong-axis bending its section modulus is Sx = 829 in³ and its moment of inertia Ix = 13100 in⁴, with a plastic modulus Zx = 943 in³.
Detailing dimensions
| Depth (d) | 31 5/8" |
|---|---|
| Flange width (bf) | 15 1/8" |
| Web thickness (tw) | 15/16" |
| Flange thickness (tf) | 1 5/8" |
| k (detailing) | 2 15/16" |
| Workable gage (g) | 5 1/2" |
Section properties
| Weight | 261 lb/ft |
|---|---|
| Area (A) | 77 in² |
| Ix | 13100 in⁴ |
| Sx | 829 in³ |
| Zx | 943 in³ |
| rx | 13.1 in |
| Iy | 959 in⁴ |
| Sy | 127 in³ |
| Zy | 196 in³ |
| ry | 3.53 in |
| J | 54.1 in⁴ |
Other W30 sizes
Same nominal size, different weight — useful when you are checking a substitution or a lighter section.
All W30 sizes and dimensions →
Similar weight wide-flange beams
Comparable 261 lb/ft sections in other wide-flange beam sizes.
Compare W30×261 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 W30×261 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Wide flange beams · Steel Beam Size Chart