250UB31.4
Universal Beam · AS/NZS 3679.1 · Australia / New Zealand
250UB31.4 is a universal beam 252.0 mm deep with a 146.0 mm flange, weighing 31.5 kg/m. The dimensions below are the published AS/NZS 3679.1 values; the drawing is generated from them.
Analyse this section, or combine it with plates and other shapes.
Open 250UB31.4 in the Section CalculatorFree, no sign-up, runs in your browser.
Published dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 252.0 mm | 9.92 in |
| Flange width, bf | 146.0 mm | 5.75 in |
| Flange thickness, tf | 8.6 mm | 0.339 in |
| Web thickness, tw | 6.1 mm | 0.240 in |
| Mass per metre | 31.5 kg/m | 21.2 lb/ft |
| Area, A | 4,012 mm² | 6.22 in² |
| Second moment, Ix | 44,758,593 mm⁴ | 107.5 in⁴ |
| Second moment, Iy | 4,464,000 mm⁴ | 10.7 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 250UB31.4 the computed area agrees with the published value to better than 0.01% and Ix to 0.14%. Where a value is also published, the published one above is the one to quote.
| Property | Value |
|---|---|
| Elastic modulus, Zx | 354,720 mm³ |
| Elastic modulus, Zy | 61,193 mm³ |
| Plastic modulus, Sx | 397,535 mm³ |
| Plastic modulus, Sy | 94,186 mm³ |
| Radius of gyration, rx | 105.6 mm |
| Radius of gyration, ry | 33.4 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 AS/NZS 3679.1 values. How StructureCalcs verifies its numbers · Understanding steel section properties · Query this section over the API