W14×145 vs W14×159
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W14×159 is the heavier section at 159 lb per foot, versus 145 for W14×145 (14 lb/ft more).
Both are nominally 14 in. deep.
W14×159 has the greater bending strength: section modulus Sx of 254 in³ versus 232, about 9% more.
| Property | W14×145 | W14×159 |
|---|---|---|
| Weight | 145 lb/ft | 159 lb/ft |
| Depth (d) | 14 3/4" | 15" |
| Flange width (bf) | 15 1/2" | 15 5/8" |
| Web thickness (tw) | 11/16" | 3/4" |
| Flange thickness (tf) | 1 1/16" | 1 3/16" |
| Area (A) | 42.7 in² | 46.7 in² |
| Moment of inertia (Ix) | 1710 in⁴ | 1900 in⁴ |
| Section modulus (Sx) | 232 in³ | 254 in³ |
| Plastic modulus (Zx) | 260 in³ | 287 in³ |
Open W14×145 in the interactive size chart →
Full detail: W14×145 · W14×159. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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