W10×30 vs W10×33
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W10×33 is the heavier section at 33 lb per foot, versus 30 for W10×30 (3 lb/ft more).
Both are nominally 10 in. deep.
W10×33 has the greater bending strength: section modulus Sx of 35 in³ versus 32.4, about 8% more.
| Property | W10×30 | W10×33 |
|---|---|---|
| Weight | 30 lb/ft | 33 lb/ft |
| Depth (d) | 10 1/2" | 9 3/4" |
| Flange width (bf) | 5 3/4" | 8" |
| Web thickness (tw) | 5/16" | 5/16" |
| Flange thickness (tf) | 1/2" | 7/16" |
| Area (A) | 8.84 in² | 9.71 in² |
| Moment of inertia (Ix) | 170 in⁴ | 171 in⁴ |
| Section modulus (Sx) | 32.4 in³ | 35 in³ |
| Plastic modulus (Zx) | 36.6 in³ | 38.8 in³ |
Open W10×30 in the interactive size chart →
Full detail: W10×30 · W10×33. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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