UB – universal beams

305x165x54

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 = 166.9d = 310.4tf = 13.7tf = 13.7tw = 7.9tw = 7.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
310.4mm
Flange widthbf
166.9mm
Web thicknesstw
7.9mm
Flange thicknesstf
13.7mm
Root radiusr
8.9mm

Mass and area

Mass per lengthm
53.98kg/m
Cross-sectional areaA
6,877mm²
Outside perimeterP
1,257mm

Strong axis x–x

Moment of inertiaIx
11710⁶ mm⁴
Elastic section modulusSx
753.610³ mm³
Plastic section modulusZx
846.110³ mm³
Radius of gyrationrx
130.4mm

Weak axis y–y

Moment of inertiaIy
10.6310⁶ mm⁴
Elastic section modulusSy
127.410³ mm³
Plastic section modulusZy
195.610³ mm³
Radius of gyrationry
39.32mm

Torsion and stability

Torsional constantJ
34910³ mm⁴
Warping constantCw
233.610⁹ mm⁶

Equivalents in other standards