W36×361 vs W36×387
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W36×387 is the heavier section at 387 lb per foot, versus 361 for W36×361 (26 lb/ft more).
Both are nominally 36 in. deep.
W36×387 has the greater bending strength: section modulus Sx of 1360 in³ versus 1350, about 1% more.
| Property | W36×361 | W36×387 |
|---|---|---|
| Weight | 361 lb/ft | 387 lb/ft |
| Depth (d) | 38" | 39 1/8" |
| Flange width (bf) | 16 3/4" | 12 3/4" |
| Web thickness (tw) | 1 1/8" | 1 7/16" |
| Flange thickness (tf) | 2" | 2 9/16" |
| Area (A) | 106 in² | 114 in² |
| Moment of inertia (Ix) | 25700 in⁴ | 26500 in⁴ |
| Section modulus (Sx) | 1350 in³ | 1360 in³ |
| Plastic modulus (Zx) | 1550 in³ | 1610 in³ |
Open W36×361 in the interactive size chart →
Full detail: W36×361 · W36×387. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
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