W14×283 vs W14×311
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W14×311 is the heavier section at 311 lb per foot, versus 283 for W14×283 (28 lb/ft more).
Both are nominally 14 in. deep.
W14×311 has the greater bending strength: section modulus Sx of 506 in³ versus 459, about 10% more.
| Property | W14×283 | W14×311 |
|---|---|---|
| Weight | 283 lb/ft | 311 lb/ft |
| Depth (d) | 16 3/4" | 17 1/8" |
| Flange width (bf) | 16 1/8" | 16 1/4" |
| Web thickness (tw) | 1 5/16" | 1 7/16" |
| Flange thickness (tf) | 2 1/16" | 2 1/4" |
| Area (A) | 83.3 in² | 91.4 in² |
| Moment of inertia (Ix) | 3840 in⁴ | 4330 in⁴ |
| Section modulus (Sx) | 459 in³ | 506 in³ |
| Plastic modulus (Zx) | 542 in³ | 603 in³ |
Open W14×283 in the interactive size chart →
Full detail: W14×283 · W14×311. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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