UB – universal beams

203x133x30

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
xybf = 133.9d = 206.8tf = 9.6tf = 9.6tw = 6.4tw = 6.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
206.8mm
Flange widthbf
133.9mm
Web thicknesstw
6.4mm
Flange thicknesstf
9.6mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
30kg/m
Cross-sectional areaA
3,821mm²
Outside perimeterP
923.4mm

Strong axis x–x

Moment of inertiaIx
28.9610⁶ mm⁴
Elastic section modulusSx
28010³ mm³
Plastic section modulusZx
314.410³ mm³
Radius of gyrationrx
87.05mm

Weak axis y–y

Moment of inertiaIy
3.84710⁶ mm⁴
Elastic section modulusSy
57.4510³ mm³
Plastic section modulusZy
88.2210³ mm³
Radius of gyrationry
31.73mm

Torsion and stability

Torsional constantJ
104.310³ mm⁴
Warping constantCw
37.3410⁹ mm⁶

Equivalents in other standards