UB – universal beams

254x102x28

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
xybf = 102.2d = 260.4tf = 10tf = 10tw = 6.3tw = 6.3
Cross-section, to scaledimensions in mm

Dimensions

Depthd
260.4mm
Flange widthbf
102.2mm
Web thicknesstw
6.3mm
Flange thicknesstf
10mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
28.32kg/m
Cross-sectional areaA
3,608mm²
Outside perimeterP
904mm

Strong axis x–x

Moment of inertiaIx
40.0510⁶ mm⁴
Elastic section modulusSx
307.610³ mm³
Plastic section modulusZx
352.810³ mm³
Radius of gyrationrx
105.4mm

Weak axis y–y

Moment of inertiaIy
1.78510⁶ mm⁴
Elastic section modulusSy
34.9410³ mm³
Plastic section modulusZy
54.8510³ mm³
Radius of gyrationry
22.24mm

Torsion and stability

Torsional constantJ
96.5710³ mm⁴
Warping constantCw
27.8910⁹ mm⁶

Equivalents in other standards