StructureCalcsW21X248
Wide-Flange Beam · AISC Shapes Database v15.0 · United States
W21X248 is a wide-flange beam 602.0 mm deep with a 325.1 mm wide flange, weighing 369.1 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 | 602.0 mm | 23.70 in |
| Flange width, bf | 325.1 mm | 12.80 in |
| Flange thickness, tf | 50.6 mm | 1.990 in |
| Web thickness, tw | 27.9 mm | 1.100 in |
| Mass per metre | 369.1 kg/m | 248.0 lb/ft |
| Area, A | 47,613 mm² | 73.80 in² |
| Second moment, Ix | 2,842,860,640 mm⁴ | 6,830.0 in⁴ |
| Second moment, Iy | 290,945,767 mm⁴ | 699.0 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 W21X248 the computed area agrees with the published value to better than 0.01% and Ix to better than 0.01%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 9,444,608 mm³ |
| Elastic modulus, Sy | 1,788,779 mm³ |
| Plastic modulus, Zx | 10,997,216 mm³ |
| Plastic modulus, Zy | 2,784,754 mm³ |
| Radius of gyration, rx | 244.4 mm |
| Radius of gyration, ry | 78.2 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