W30×99 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.
W30×99 measures 29 5/8 in. deep with a 10 1/2 in. flange, on a 1/2 in. web and 11/16 in. flanges.
At 99 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 = 269 in³ and its moment of inertia Ix = 3990 in⁴, with a plastic modulus Zx = 312 in³.
Detailing dimensions
| Depth (d) | 29 5/8" |
|---|---|
| Flange width (bf) | 10 1/2" |
| Web thickness (tw) | 1/2" |
| Flange thickness (tf) | 11/16" |
| k (detailing) | 2" |
| Workable gage (g) | 5 1/2" |
Section properties
| Weight | 99 lb/ft |
|---|---|
| Area (A) | 29 in² |
| Ix | 3990 in⁴ |
| Sx | 269 in³ |
| Zx | 312 in³ |
| rx | 11.7 in |
| Iy | 128 in⁴ |
| Sy | 24.5 in³ |
| Zy | 38.6 in³ |
| ry | 2.1 in |
| J | 3.77 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 99 lb/ft sections in other wide-flange beam sizes.
Compare W30×99 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 W30×99 cut, formed, or fabricated? Huntington Steel & Supply Co.
Browse more: Wide flange beams · Steel Beam Size Chart