W10×68 vs W10×77
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W10×77 is the heavier section at 77 lb per foot, versus 68 for W10×68 (9 lb/ft more).
Both are nominally 10 in. deep.
W10×77 has the greater bending strength: section modulus Sx of 85.9 in³ versus 75.7, about 13% more.
| Property | W10×68 | W10×77 |
|---|---|---|
| Weight | 68 lb/ft | 77 lb/ft |
| Depth (d) | 10 3/8" | 10 5/8" |
| Flange width (bf) | 10 1/8" | 10 1/4" |
| Web thickness (tw) | 1/2" | 1/2" |
| Flange thickness (tf) | 3/4" | 7/8" |
| Area (A) | 19.9 in² | 22.7 in² |
| Moment of inertia (Ix) | 394 in⁴ | 455 in⁴ |
| Section modulus (Sx) | 75.7 in³ | 85.9 in³ |
| Plastic modulus (Zx) | 85.3 in³ | 97.6 in³ |
Open W10×68 in the interactive size chart →
Full detail: W10×68 · W10×77. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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