W27×114 vs W27×129
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W27×129 is the heavier section at 129 lb per foot, versus 114 for W27×114 (15 lb/ft more).
Both are nominally 27 in. deep.
W27×129 has the greater bending strength: section modulus Sx of 345 in³ versus 299, about 15% more.
| Property | W27×114 | W27×129 |
|---|---|---|
| Weight | 114 lb/ft | 129 lb/ft |
| Depth (d) | 27 1/4" | 27 5/8" |
| Flange width (bf) | 10 1/8" | 10" |
| Web thickness (tw) | 9/16" | 5/8" |
| Flange thickness (tf) | 15/16" | 1 1/8" |
| Area (A) | 33.6 in² | 37.8 in² |
| Moment of inertia (Ix) | 4080 in⁴ | 4760 in⁴ |
| Section modulus (Sx) | 299 in³ | 345 in³ |
| Plastic modulus (Zx) | 343 in³ | 395 in³ |
Open W27×114 in the interactive size chart →
Full detail: W27×114 · W27×129. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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