W40×235 vs W40×249
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W40×249 is the heavier section at 249 lb per foot, versus 235 for W40×235 (14 lb/ft more).
Both are nominally 40 in. deep.
W40×249 has the greater bending strength: section modulus Sx of 993 in³ versus 875, about 13% more.
| Property | W40×235 | W40×249 |
|---|---|---|
| Weight | 235 lb/ft | 249 lb/ft |
| Depth (d) | 39 3/4" | 39 3/8" |
| Flange width (bf) | 11 7/8" | 15 3/4" |
| Web thickness (tw) | 13/16" | 3/4" |
| Flange thickness (tf) | 1 9/16" | 1 7/16" |
| Area (A) | 69.1 in² | 73.5 in² |
| Moment of inertia (Ix) | 17400 in⁴ | 19600 in⁴ |
| Section modulus (Sx) | 875 in³ | 993 in³ |
| Plastic modulus (Zx) | 1010 in³ | 1120 in³ |
Open W40×235 in the interactive size chart →
Full detail: W40×235 · W40×249. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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