UB – universal beams

305x165x46

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 = 165.7d = 306.6tf = 11.8tf = 11.8tw = 6.7tw = 6.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
306.6mm
Flange widthbf
165.7mm
Web thicknesstw
6.7mm
Flange thicknesstf
11.8mm
Root radiusr
8.9mm

Mass and area

Mass per lengthm
46.12kg/m
Cross-sectional areaA
5,875mm²
Outside perimeterP
1,247mm

Strong axis x–x

Moment of inertiaIx
98.9910⁶ mm⁴
Elastic section modulusSx
645.710³ mm³
Plastic section modulusZx
72010³ mm³
Radius of gyrationrx
129.8mm

Weak axis y–y

Moment of inertiaIy
8.95710⁶ mm⁴
Elastic section modulusSy
108.110³ mm³
Plastic section modulusZy
165.510³ mm³
Radius of gyrationry
39.05mm

Torsion and stability

Torsional constantJ
22210³ mm⁴
Warping constantCw
194.410⁹ mm⁶

Equivalents in other standards