W36×247 vs W36×256
A side-by-side comparison of two AISC wide-flange beams, 16th Edition. Detailing dimensions to the nearest 1/16 in.
W36×256 is the heavier section at 256 lb per foot, versus 247 for W36×247 (9 lb/ft more).
Both are nominally 36 in. deep.
W36×247 has the greater bending strength: section modulus Sx of 913 in³ versus 895, about 2% more.
| Property | W36×247 | W36×256 |
|---|---|---|
| Weight | 247 lb/ft | 256 lb/ft |
| Depth (d) | 36 5/8" | 37 3/8" |
| Flange width (bf) | 16 1/2" | 12 1/4" |
| Web thickness (tw) | 13/16" | 15/16" |
| Flange thickness (tf) | 1 3/8" | 1 3/4" |
| Area (A) | 72.5 in² | 75.3 in² |
| Moment of inertia (Ix) | 16700 in⁴ | 16800 in⁴ |
| Section modulus (Sx) | 913 in³ | 895 in³ |
| Plastic modulus (Zx) | 1030 in³ | 1040 in³ |
Open W36×247 in the interactive size chart →
Full detail: W36×247 · W36×256. Verify critical dimensions against the current AISC Steel Construction Manual before fabrication.
Browse more: size comparisons · Steel Beam Size Chart