W21×122 vs W21×132
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W21×132 is the heavier section at 132 lb per foot, versus 122 for W21×122 (10 lb/ft more).
Both are nominally 21 in. deep.
W21×132 has the greater bending strength: section modulus Sx of 295 in³ versus 273, about 8% more.
| Property | W21×122 | W21×132 |
|---|---|---|
| Weight | 122 lb/ft | 132 lb/ft |
| Depth (d) | 21 5/8" | 21 7/8" |
| Flange width (bf) | 12 3/8" | 12 1/2" |
| Web thickness (tw) | 5/8" | 5/8" |
| Flange thickness (tf) | 15/16" | 1 1/16" |
| Area (A) | 35.9 in² | 38.8 in² |
| Moment of inertia (Ix) | 2960 in⁴ | 3220 in⁴ |
| Section modulus (Sx) | 273 in³ | 295 in³ |
| Plastic modulus (Zx) | 307 in³ | 333 in³ |
Open W21×122 in the interactive size chart →
Full detail: W21×122 · W21×132. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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