W8×48 vs W14×48
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W8×48 and W14×48 both weigh 48 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W14×48 is the deeper section at a nominal 14 in., versus 8 in.
W14×48 has the greater bending strength: section modulus Sx of 70.2 in³ versus 43.2, about 63% more.
| Property | W8×48 | W14×48 |
|---|---|---|
| Weight | 48 lb/ft | 48 lb/ft |
| Depth (d) | 8 1/2" | 13 3/4" |
| Flange width (bf) | 8 1/8" | 8" |
| Web thickness (tw) | 3/8" | 5/16" |
| Flange thickness (tf) | 11/16" | 5/8" |
| Area (A) | 14.1 in² | 14.1 in² |
| Moment of inertia (Ix) | 184 in⁴ | 484 in⁴ |
| Section modulus (Sx) | 43.2 in³ | 70.2 in³ |
| Plastic modulus (Zx) | 49 in³ | 78.4 in³ |
Open W8×48 in the interactive size chart →
Full detail: W8×48 · W14×48. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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