W30X391
Wide-Flange Beam · AISC Shapes Database v15.0 · United States
W30X391 is a wide-flange beam 843.3 mm deep with a 396.2 mm flange, weighing 581.9 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 | 843.3 mm | 33.20 in |
| Flange width, bf | 396.2 mm | 15.60 in |
| Flange thickness, tf | 62.0 mm | 2.440 in |
| Web thickness, tw | 34.5 mm | 1.360 in |
| Mass per metre | 581.9 kg/m | 391.0 lb/ft |
| Area, A | 74,193 mm² | 115.00 in² |
| Second moment, Ix | 8,615,990,518 mm⁴ | 20,700.0 in⁴ |
| Second moment, Iy | 645,158,710 mm⁴ | 1,550.0 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 W30X391 the computed area agrees with the published value to better than 0.01% and Ix to 0.05%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 20,425,090 mm³ |
| Elastic modulus, Zy | 3,256,736 mm³ |
| Plastic modulus, Sx | 23,738,036 mm³ |
| Plastic modulus, Sy | 5,084,992 mm³ |
| Radius of gyration, rx | 340.7 mm |
| Radius of gyration, ry | 93.3 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