UB – universal beams

406x178x67

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 = 178.8d = 409.4tf = 14.3tf = 14.3tw = 8.8tw = 8.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
409.4mm
Flange widthbf
178.8mm
Web thicknesstw
8.8mm
Flange thicknesstf
14.3mm
Root radiusr
10.2mm

Mass and area

Mass per lengthm
67.15kg/m
Cross-sectional areaA
8,554mm²
Outside perimeterP
1,499mm

Strong axis x–x

Moment of inertiaIx
243.310⁶ mm⁴
Elastic section modulusSx
1,18910³ mm³
Plastic section modulusZx
1,34610³ mm³
Radius of gyrationrx
168.7mm

Weak axis y–y

Moment of inertiaIy
13.6510⁶ mm⁴
Elastic section modulusSy
152.710³ mm³
Plastic section modulusZy
236.610³ mm³
Radius of gyrationry
39.95mm

Torsion and stability

Torsional constantJ
46410³ mm⁴
Warping constantCw
531.710⁹ mm⁶

Equivalents in other standards