W27×281 vs W27×307
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W27×307 is the heavier section at 307 lb per foot, versus 281 for W27×281 (26 lb/ft more).
Both are nominally 27 in. deep.
W27×307 has the greater bending strength: section modulus Sx of 887 in³ versus 814, about 9% more.
| Property | W27×281 | W27×307 |
|---|---|---|
| Weight | 281 lb/ft | 307 lb/ft |
| Depth (d) | 29 1/4" | 29 5/8" |
| Flange width (bf) | 14 3/8" | 14 1/2" |
| Web thickness (tw) | 1 1/16" | 1 3/16" |
| Flange thickness (tf) | 1 15/16" | 2 1/16" |
| Area (A) | 83.1 in² | 90.2 in² |
| Moment of inertia (Ix) | 11900 in⁴ | 13100 in⁴ |
| Section modulus (Sx) | 814 in³ | 887 in³ |
| Plastic modulus (Zx) | 936 in³ | 1030 in³ |
Open W27×281 in the interactive size chart →
Full detail: W27×281 · W27×307. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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