W30×211 vs W40×211
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W30×211 and W40×211 both weigh 211 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W40×211 is the deeper section at a nominal 40 in., versus 30 in.
W40×211 has the greater bending strength: section modulus Sx of 786 in³ versus 665, about 18% more.
| Property | W30×211 | W40×211 |
|---|---|---|
| Weight | 211 lb/ft | 211 lb/ft |
| Depth (d) | 31" | 39 3/8" |
| Flange width (bf) | 15 1/8" | 11 3/4" |
| Web thickness (tw) | 3/4" | 3/4" |
| Flange thickness (tf) | 1 5/16" | 1 7/16" |
| Area (A) | 62.3 in² | 62.1 in² |
| Moment of inertia (Ix) | 10300 in⁴ | 15500 in⁴ |
| Section modulus (Sx) | 665 in³ | 786 in³ |
| Plastic modulus (Zx) | 751 in³ | 906 in³ |
Open W30×211 in the interactive size chart →
Full detail: W30×211 · W40×211. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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