W27×235 vs W30×235
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W27×235 and W30×235 both weigh 235 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W30×235 is the deeper section at a nominal 30 in., versus 27 in.
W30×235 has the greater bending strength: section modulus Sx of 748 in³ versus 677, about 10% more.
| Property | W27×235 | W30×235 |
|---|---|---|
| Weight | 235 lb/ft | 235 lb/ft |
| Depth (d) | 28 5/8" | 31 1/4" |
| Flange width (bf) | 14 1/4" | 15" |
| Web thickness (tw) | 15/16" | 13/16" |
| Flange thickness (tf) | 1 5/8" | 1 1/2" |
| Area (A) | 69.4 in² | 69.3 in² |
| Moment of inertia (Ix) | 9700 in⁴ | 11700 in⁴ |
| Section modulus (Sx) | 677 in³ | 748 in³ |
| Plastic modulus (Zx) | 772 in³ | 847 in³ |
Open W27×235 in the interactive size chart →
Full detail: W27×235 · W30×235. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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