UB – universal beams

180UB16.1

Standard: AS/NZS 3679.1Source: InfraBuild dimensions, Hot Rolled & Structural Steel Products (ed. 9) — calculated properties
Published area (Ag) shown as a check: difference < 1.5% on every section.
xybf = 90d = 173tf = 7tf = 7tw = 4.5tw = 4.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
173mm
Flange widthbf
90mm
Web thicknesstw
4.5mm
Flange thicknesstf
7mm
Root radiusr
8.9mm

Mass and area

Mass per lengthm
16.04kg/m
Cross-sectional areaA
2,043mm²
Published area (standard)A pub.
2,040mm²
Outside perimeterP
681.7mm

Strong axis x–x

Moment of inertiaIx
10.610⁶ mm⁴
Elastic section modulusSx
122.610³ mm³
Plastic section modulusZx
138.310³ mm³
Radius of gyrationrx
72.03mm

Weak axis y–y

Moment of inertiaIy
0.853110⁶ mm⁴
Elastic section modulusSy
18.9610³ mm³
Plastic section modulusZy
29.4410³ mm³
Radius of gyrationry
20.43mm

Torsion and stability

Torsional constantJ
31.6910³ mm⁴
Warping constantCw
5.85910⁹ mm⁶

Equivalents in other standards