W18×55 wide-flange beam
W18×55 weighs 55 lb per foot. Detailing dimensions and section properties below come from the AISC Shapes Database, 16th Edition. Values are shown to the nearest 1/16 in. as they appear on a shop drawing.
Detailing dimensions
| Depth (d) | 18 1/8" |
|---|---|
| Flange width (bf) | 7 1/2" |
| Web thickness (tw) | 3/8" |
| Flange thickness (tf) | 5/8" |
| k (detailing) | 1 5/16" |
| Workable gage (g) | 3 1/2" |
Section properties
| Weight | 55 lb/ft |
|---|---|
| Area (A) | 16.2 in² |
| Ix | 890 in⁴ |
| Sx | 98.3 in³ |
| Zx | 112 in³ |
| rx | 7.41 in |
| Iy | 44.9 in⁴ |
| Sy | 11.9 in³ |
| Zy | 18.5 in³ |
| ry | 1.67 in |
| J | 1.66 in⁴ |
Detailing values are rounded to the nearest 1/16 in. per the AISC Steel Construction Manual. Verify critical dimensions against the current Manual before fabrication. Need W18×55 cut, formed, or fabricated? Huntington Steel & Supply Co.