W10×77 vs W16×77
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W10×77 and W16×77 both weigh 77 lb per foot, so the choice comes down to depth and stiffness rather than weight.
W16×77 is the deeper section at a nominal 16 in., versus 10 in.
W16×77 has the greater bending strength: section modulus Sx of 134 in³ versus 85.9, about 56% more.
| Property | W10×77 | W16×77 |
|---|---|---|
| Weight | 77 lb/ft | 77 lb/ft |
| Depth (d) | 10 5/8" | 16 1/2" |
| Flange width (bf) | 10 1/4" | 10 1/4" |
| Web thickness (tw) | 1/2" | 7/16" |
| Flange thickness (tf) | 7/8" | 3/4" |
| Area (A) | 22.7 in² | 22.6 in² |
| Moment of inertia (Ix) | 455 in⁴ | 1110 in⁴ |
| Section modulus (Sx) | 85.9 in³ | 134 in³ |
| Plastic modulus (Zx) | 97.6 in³ | 150 in³ |
Open W10×77 in the interactive size chart →
Full detail: W10×77 · W16×77. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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