W40×249 vs W40×264
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W40×264 is the heavier section at 264 lb per foot, versus 249 for W40×249 (15 lb/ft more).
Both are nominally 40 in. deep.
W40×249 has the greater bending strength: section modulus Sx of 993 in³ versus 971, about 2% more.
| Property | W40×249 | W40×264 |
|---|---|---|
| Weight | 249 lb/ft | 264 lb/ft |
| Depth (d) | 39 3/8" | 40" |
| Flange width (bf) | 15 3/4" | 11 7/8" |
| Web thickness (tw) | 3/4" | 15/16" |
| Flange thickness (tf) | 1 7/16" | 1 3/4" |
| Area (A) | 73.5 in² | 77.4 in² |
| Moment of inertia (Ix) | 19600 in⁴ | 19400 in⁴ |
| Section modulus (Sx) | 993 in³ | 971 in³ |
| Plastic modulus (Zx) | 1120 in³ | 1130 in³ |
Open W40×249 in the interactive size chart →
Full detail: W40×249 · W40×264. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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