W8×10 vs W8×13
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W8×13 is the heavier section at 13 lb per foot, versus 10 for W8×10 (3 lb/ft more).
Both are nominally 8 in. deep.
W8×13 has the greater bending strength: section modulus Sx of 9.91 in³ versus 7.81, about 27% more.
| Property | W8×10 | W8×13 |
|---|---|---|
| Weight | 10 lb/ft | 13 lb/ft |
| Depth (d) | 7 7/8" | 8" |
| Flange width (bf) | 4" | 4" |
| Web thickness (tw) | 3/16" | 1/4" |
| Flange thickness (tf) | 3/16" | 1/4" |
| Area (A) | 2.96 in² | 3.84 in² |
| Moment of inertia (Ix) | 30.8 in⁴ | 39.6 in⁴ |
| Section modulus (Sx) | 7.81 in³ | 9.91 in³ |
| Plastic modulus (Zx) | 8.87 in³ | 11.4 in³ |
Open W8×10 in the interactive size chart →
Full detail: W8×10 · W8×13. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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