W18X71
Wide-Flange Beam · AISC Shapes Database v15.0 · United States
W18X71 is a wide-flange beam 469.9 mm deep with a 194.1 mm flange, weighing 105.7 kg/m. The dimensions below are the published AISC Shapes Database v15.0 values; the drawing is generated from them.
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Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 469.9 mm | 18.50 in |
| Flange width, bf | 194.1 mm | 7.64 in |
| Flange thickness, tf | 20.6 mm | 0.810 in |
| Web thickness, tw | 12.6 mm | 0.495 in |
| Mass per metre | 105.7 kg/m | 71.0 lb/ft |
| Area, A | 13,419 mm² | 20.80 in² |
| Second moment, Ix | 486,990,768 mm⁴ | 1,170.0 in⁴ |
| Second moment, Iy | 25,098,755 mm⁴ | 60.3 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 W18X71 the computed area agrees with the published value to better than 0.01% and Ix to 0.18%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 2,076,552 mm³ |
| Elastic modulus, Zy | 258,979 mm³ |
| Plastic modulus, Sx | 2,381,076 mm³ |
| Plastic modulus, Sy | 404,624 mm³ |
| Radius of gyration, rx | 190.7 mm |
| Radius of gyration, ry | 43.3 mm |
Z is the elastic modulus and S the plastic modulus, following AS 4100. Under AISC 360 the letters are reversed — S is elastic and Z is plastic.
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