W18×40 wide-flange beam
W18×40 weighs 40 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) | 17 7/8" |
|---|---|
| Flange width (bf) | 6" |
| Web thickness (tw) | 5/16" |
| Flange thickness (tf) | 1/2" |
| k (detailing) | 1 3/16" |
| Workable gage (g) | 3 1/2" |
Section properties
| Weight | 40 lb/ft |
|---|---|
| Area (A) | 11.8 in² |
| Ix | 612 in⁴ |
| Sx | 68.4 in³ |
| Zx | 78.4 in³ |
| rx | 7.21 in |
| Iy | 19.1 in⁴ |
| Sy | 6.35 in³ |
| Zy | 10 in³ |
| ry | 1.27 in |
| J | 0.81 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 W18×40 cut, formed, or fabricated? Huntington Steel & Supply Co.