W30×108 vs W30×116
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W30×116 is the heavier section at 116 lb per foot, versus 108 for W30×108 (8 lb/ft more).
Both are nominally 30 in. deep.
W30×116 has the greater bending strength: section modulus Sx of 329 in³ versus 299, about 10% more.
| Property | W30×108 | W30×116 |
|---|---|---|
| Weight | 108 lb/ft | 116 lb/ft |
| Depth (d) | 29 7/8" | 30" |
| Flange width (bf) | 10 1/2" | 10 1/2" |
| Web thickness (tw) | 9/16" | 9/16" |
| Flange thickness (tf) | 3/4" | 7/8" |
| Area (A) | 31.7 in² | 34.2 in² |
| Moment of inertia (Ix) | 4470 in⁴ | 4930 in⁴ |
| Section modulus (Sx) | 299 in³ | 329 in³ |
| Plastic modulus (Zx) | 346 in³ | 378 in³ |
Open W30×108 in the interactive size chart →
Full detail: W30×108 · W30×116. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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