W30×235 vs W30×261
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W30×261 is the heavier section at 261 lb per foot, versus 235 for W30×235 (26 lb/ft more).
Both are nominally 30 in. deep.
W30×261 has the greater bending strength: section modulus Sx of 829 in³ versus 748, about 11% more.
| Property | W30×235 | W30×261 |
|---|---|---|
| Weight | 235 lb/ft | 261 lb/ft |
| Depth (d) | 31 1/4" | 31 5/8" |
| Flange width (bf) | 15" | 15 1/8" |
| Web thickness (tw) | 13/16" | 15/16" |
| Flange thickness (tf) | 1 1/2" | 1 5/8" |
| Area (A) | 69.3 in² | 77 in² |
| Moment of inertia (Ix) | 11700 in⁴ | 13100 in⁴ |
| Section modulus (Sx) | 748 in³ | 829 in³ |
| Plastic modulus (Zx) | 847 in³ | 943 in³ |
Open W30×235 in the interactive size chart →
Full detail: W30×235 · W30×261. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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