UB – universal beams

406x140x39

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
Range derived from BS 4-1; to be confirmed with the SAISC Red Book.
xybf = 141.8d = 398tf = 8.6tf = 8.6tw = 6.4tw = 6.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
398mm
Flange widthbf
141.8mm
Web thicknesstw
6.4mm
Flange thicknesstf
8.6mm
Root radiusr
10.2mm

Mass and area

Mass per lengthm
38.98kg/m
Cross-sectional areaA
4,965mm²
Outside perimeterP
1,333mm

Strong axis x–x

Moment of inertiaIx
125.110⁶ mm⁴
Elastic section modulusSx
628.610³ mm³
Plastic section modulusZx
723.710³ mm³
Radius of gyrationrx
158.7mm

Weak axis y–y

Moment of inertiaIy
4.09810⁶ mm⁴
Elastic section modulusSy
57.810³ mm³
Plastic section modulusZy
90.8510³ mm³
Radius of gyrationry
28.73mm

Torsion and stability

Torsional constantJ
109.910³ mm⁴
Warping constantCw
154.910⁹ mm⁶

Equivalents in other standards