UB – universal beams

406x178x74

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
Singapore uses BS / BS EN sections; same data as the United Kingdom.
xybf = 179.5d = 412.8tf = 16tf = 16tw = 9.5tw = 9.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
412.8mm
Flange widthbf
179.5mm
Web thicknesstw
9.5mm
Flange thicknesstf
16mm
Root radiusr
10.2mm

Mass and area

Mass per lengthm
74.19kg/m
Cross-sectional areaA
9,451mm²
Outside perimeterP
1,507mm

Strong axis x–x

Moment of inertiaIx
273.110⁶ mm⁴
Elastic section modulusSx
1,32310³ mm³
Plastic section modulusZx
1,50110³ mm³
Radius of gyrationrx
170mm

Weak axis y–y

Moment of inertiaIy
15.4510⁶ mm⁴
Elastic section modulusSy
172.210³ mm³
Plastic section modulusZy
26710³ mm³
Radius of gyrationry
40.44mm

Torsion and stability

Torsional constantJ
63110³ mm⁴
Warping constantCw
607.110⁹ mm⁶

Equivalents in other standards