W21×57 wide-flange beam
W21×57 weighs 57 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) | 21" |
|---|---|
| Flange width (bf) | 6 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 | 57 lb/ft |
|---|---|
| Area (A) | 16.7 in² |
| Ix | 1170 in⁴ |
| Sx | 111 in³ |
| Zx | 129 in³ |
| rx | 8.36 in |
| Iy | 30.6 in⁴ |
| Sy | 9.35 in³ |
| Zy | 14.8 in³ |
| ry | 1.35 in |
| J | 1.77 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 W21×57 cut, formed, or fabricated? Huntington Steel & Supply Co.