W12×30 vs W14×30
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W12×30 and W14×30 both weigh 30 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W14×30 is the deeper section at a nominal 14 in., versus 12 in.
W14×30 has the greater bending strength: section modulus Sx of 42 in³ versus 38.6, about 9% more.
| Property | W12×30 | W14×30 |
|---|---|---|
| Weight | 30 lb/ft | 30 lb/ft |
| Depth (d) | 12 3/8" | 13 7/8" |
| Flange width (bf) | 6 1/2" | 6 3/4" |
| Web thickness (tw) | 1/4" | 1/4" |
| Flange thickness (tf) | 7/16" | 3/8" |
| Area (A) | 8.79 in² | 8.85 in² |
| Moment of inertia (Ix) | 238 in⁴ | 291 in⁴ |
| Section modulus (Sx) | 38.6 in³ | 42 in³ |
| Plastic modulus (Zx) | 43.1 in³ | 47.3 in³ |
Open W12×30 in the interactive size chart →
Full detail: W12×30 · W14×30. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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