UB – universal beams

203x102x23

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 = 101.8d = 203.2tf = 9.3tf = 9.3tw = 5.4tw = 5.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
203.2mm
Flange widthbf
101.8mm
Web thicknesstw
5.4mm
Flange thicknesstf
9.3mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
23.08kg/m
Cross-sectional areaA
2,940mm²
Outside perimeterP
789.8mm

Strong axis x–x

Moment of inertiaIx
21.0510⁶ mm⁴
Elastic section modulusSx
207.210³ mm³
Plastic section modulusZx
234.110³ mm³
Radius of gyrationrx
84.62mm

Weak axis y–y

Moment of inertiaIy
1.63910⁶ mm⁴
Elastic section modulusSy
32.1910³ mm³
Plastic section modulusZy
49.7510³ mm³
Radius of gyrationry
23.61mm

Torsion and stability

Torsional constantJ
70.2210³ mm⁴
Warping constantCw
15.3710⁹ mm⁶

Equivalents in other standards