W24×250 vs W24×279
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W24×279 is the heavier section at 279 lb per foot, versus 250 for W24×250 (29 lb/ft more).
Both are nominally 24 in. deep.
W24×279 has the greater bending strength: section modulus Sx of 718 in³ versus 644, about 11% more.
| Property | W24×250 | W24×279 |
|---|---|---|
| Weight | 250 lb/ft | 279 lb/ft |
| Depth (d) | 26 3/8" | 26 3/4" |
| Flange width (bf) | 13 1/8" | 13 1/4" |
| Web thickness (tw) | 1 1/16" | 1 3/16" |
| Flange thickness (tf) | 1 7/8" | 2 1/16" |
| Area (A) | 73.5 in² | 81.9 in² |
| Moment of inertia (Ix) | 8490 in⁴ | 9600 in⁴ |
| Section modulus (Sx) | 644 in³ | 718 in³ |
| Plastic modulus (Zx) | 744 in³ | 835 in³ |
Open W24×250 in the interactive size chart →
Full detail: W24×250 · W24×279. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
Browse more: size comparisons · Steel Beam Size Chart