UB – universal beams

203x133x25

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 = 133.2d = 203.2tf = 7.8tf = 7.8tw = 5.7tw = 5.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
203.2mm
Flange widthbf
133.2mm
Web thicknesstw
5.7mm
Flange thicknesstf
7.8mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
25.1kg/m
Cross-sectional areaA
3,197mm²
Outside perimeterP
914.8mm

Strong axis x–x

Moment of inertiaIx
23.410⁶ mm⁴
Elastic section modulusSx
230.310³ mm³
Plastic section modulusZx
257.710³ mm³
Radius of gyrationrx
85.56mm

Weak axis y–y

Moment of inertiaIy
3.07610⁶ mm⁴
Elastic section modulusSy
46.1910³ mm³
Plastic section modulusZy
70.9410³ mm³
Radius of gyrationry
31.02mm

Torsion and stability

Torsional constantJ
60.9510³ mm⁴
Warping constantCw
29.3310⁹ mm⁶

Equivalents in other standards