W14×500 vs W14×550
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W14×550 is the heavier section at 550 lb per foot, versus 500 for W14×500 (50 lb/ft more).
Both are nominally 14 in. deep.
W14×550 has the greater bending strength: section modulus Sx of 931 in³ versus 838, about 11% more.
| Property | W14×500 | W14×550 |
|---|---|---|
| Weight | 500 lb/ft | 550 lb/ft |
| Depth (d) | 19 5/8" | 20 1/4" |
| Flange width (bf) | 17" | 17 1/4" |
| Web thickness (tw) | 2 3/16" | 2 3/8" |
| Flange thickness (tf) | 3 1/2" | 3 13/16" |
| Area (A) | 147 in² | 162 in² |
| Moment of inertia (Ix) | 8210 in⁴ | 9430 in⁴ |
| Section modulus (Sx) | 838 in³ | 931 in³ |
| Plastic modulus (Zx) | 1050 in³ | 1180 in³ |
Open W14×500 in the interactive size chart →
Full detail: W14×500 · W14×550. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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