W14×90 vs W30×90
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W14×90 and W30×90 both weigh 90 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W30×90 is the deeper section at a nominal 30 in., versus 14 in.
W30×90 has the greater bending strength: section modulus Sx of 245 in³ versus 143, about 71% more.
| Property | W14×90 | W30×90 |
|---|---|---|
| Weight | 90 lb/ft | 90 lb/ft |
| Depth (d) | 14" | 29 1/2" |
| Flange width (bf) | 14 1/2" | 10 3/8" |
| Web thickness (tw) | 7/16" | 1/2" |
| Flange thickness (tf) | 11/16" | 5/8" |
| Area (A) | 26.5 in² | 26.3 in² |
| Moment of inertia (Ix) | 999 in⁴ | 3610 in⁴ |
| Section modulus (Sx) | 143 in³ | 245 in³ |
| Plastic modulus (Zx) | 157 in³ | 283 in³ |
Open W14×90 in the interactive size chart →
Full detail: W14×90 · W30×90. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
Browse more: size comparisons · Steel Beam Size Chart