StructureCalcsW21X147
Wide-Flange Beam · AISC Shapes Database v15.0 · United States
W21X147 is a wide-flange beam 561.3 mm deep with a 317.5 mm wide flange, weighing 218.8 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
W-shapes are the American wide-flange family — the default beam and column of US practice, with parallel flanges and the widest range of depths in the AISC catalogue.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 561.3 mm | 22.10 in |
| Flange width, bf | 317.5 mm | 12.50 in |
| Flange thickness, tf | 29.2 mm | 1.150 in |
| Web thickness, tw | 18.3 mm | 0.720 in |
| Mass per metre | 218.8 kg/m | 147.0 lb/ft |
| Area, A | 27,871 mm² | 43.20 in² |
| Second moment, Ix | 1,510,920,076 mm⁴ | 3,630.0 in⁴ |
| Second moment, Iy | 156,503,016 mm⁴ | 376.0 in⁴ |
Derived section properties
Integrated from the section's own outline including the root and toe radii, whose arcs are integrated analytically rather than approximated by facets. For W21X147 the computed area agrees with the published value to better than 0.01% and Ix to 0.33%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 5,400,993 mm³ |
| Elastic modulus, Sy | 983,245 mm³ |
| Plastic modulus, Zx | 6,122,334 mm³ |
| Plastic modulus, Zy | 1,515,797 mm³ |
| Radius of gyration, rx | 233.2 mm |
| Radius of gyration, ry | 74.8 mm |
S is the elastic modulus and Z the plastic modulus, following AISC 360. Australian and British practice reverse the letters.
Neighbouring sizes
Where these numbers come from
Published AISC Shapes Database v15.0 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API