W33×263 vs W33×291
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W33×291 is the heavier section at 291 lb per foot, versus 263 for W33×263 (28 lb/ft more).
Both are nominally 33 in. deep.
W33×291 has the greater bending strength: section modulus Sx of 1020 in³ versus 919, about 11% more.
| Property | W33×263 | W33×291 |
|---|---|---|
| Weight | 263 lb/ft | 291 lb/ft |
| Depth (d) | 34 1/2" | 34 7/8" |
| Flange width (bf) | 15 3/4" | 15 7/8" |
| Web thickness (tw) | 7/8" | 15/16" |
| Flange thickness (tf) | 1 9/16" | 1 3/4" |
| Area (A) | 77.4 in² | 85.6 in² |
| Moment of inertia (Ix) | 15900 in⁴ | 17700 in⁴ |
| Section modulus (Sx) | 919 in³ | 1020 in³ |
| Plastic modulus (Zx) | 1040 in³ | 1160 in³ |
Open W33×263 in the interactive size chart →
Full detail: W33×263 · W33×291. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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