StructureCalcsW18X234
Wide-Flange Beam · AISC Shapes Database v15.0 · United States
W18X234 is a wide-flange beam 535.9 mm deep with a 297.2 mm wide flange, weighing 348.2 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 | 535.9 mm | 21.10 in |
| Flange width, bf | 297.2 mm | 11.70 in |
| Flange thickness, tf | 53.6 mm | 2.110 in |
| Web thickness, tw | 29.5 mm | 1.160 in |
| Mass per metre | 348.2 kg/m | 234.0 lb/ft |
| Area, A | 44,258 mm² | 68.60 in² |
| Second moment, Ix | 2,039,533,987 mm⁴ | 4,900.0 in⁴ |
| Second moment, Iy | 232,257,136 mm⁴ | 558.0 in⁴ |
Derived section properties
Integrated from a square-cornered outline — the fillet radii this family really has are not drawn, so the computed values differ slightly from published. For W18X234 the computed area is 0.51% from published and Ix 0.70%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Sx | 7,664,284 mm³ |
| Elastic modulus, Sy | 1,583,765 mm³ |
| Plastic modulus, Zx | 9,035,792 mm³ |
| Plastic modulus, Zy | 2,459,455 mm³ |
| Radius of gyration, rx | 214.9 mm |
| Radius of gyration, ry | 72.7 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