UB – universal beams

254x102x22

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 = 101.6d = 254tf = 6.8tf = 6.8tw = 5.7tw = 5.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
254mm
Flange widthbf
101.6mm
Web thicknesstw
5.7mm
Flange thicknesstf
6.8mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
21.99kg/m
Cross-sectional areaA
2,802mm²
Outside perimeterP
890mm

Strong axis x–x

Moment of inertiaIx
28.4110⁶ mm⁴
Elastic section modulusSx
223.710³ mm³
Plastic section modulusZx
25910³ mm³
Radius of gyrationrx
100.7mm

Weak axis y–y

Moment of inertiaIy
1.19310⁶ mm⁴
Elastic section modulusSy
23.4910³ mm³
Plastic section modulusZy
37.2710³ mm³
Radius of gyrationry
20.64mm

Torsion and stability

Torsional constantJ
43.4810³ mm⁴
Warping constantCw
18.1610⁹ mm⁶

Equivalents in other standards