W21×132 vs W21×147
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W21×147 is the heavier section at 147 lb per foot, versus 132 for W21×132 (15 lb/ft more).
Both are nominally 21 in. deep.
W21×147 has the greater bending strength: section modulus Sx of 329 in³ versus 295, about 12% more.
| Property | W21×132 | W21×147 |
|---|---|---|
| Weight | 132 lb/ft | 147 lb/ft |
| Depth (d) | 21 7/8" | 22" |
| Flange width (bf) | 12 1/2" | 12 1/2" |
| Web thickness (tw) | 5/8" | 3/4" |
| Flange thickness (tf) | 1 1/16" | 1 1/8" |
| Area (A) | 38.8 in² | 43.2 in² |
| Moment of inertia (Ix) | 3220 in⁴ | 3630 in⁴ |
| Section modulus (Sx) | 295 in³ | 329 in³ |
| Plastic modulus (Zx) | 333 in³ | 373 in³ |
Open W21×132 in the interactive size chart →
Full detail: W21×132 · W21×147. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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