UB – universal beams

305x127x48

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 = 125.3d = 311tf = 14tf = 14tw = 9tw = 9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
311mm
Flange widthbf
125.3mm
Web thicknesstw
9mm
Flange thicknesstf
14mm
Root radiusr
8.9mm

Mass and area

Mass per lengthm
48.07kg/m
Cross-sectional areaA
6,123mm²
Outside perimeterP
1,090mm

Strong axis x–x

Moment of inertiaIx
95.7510⁶ mm⁴
Elastic section modulusSx
615.710³ mm³
Plastic section modulusZx
710.710³ mm³
Radius of gyrationrx
125mm

Weak axis y–y

Moment of inertiaIy
4.6110⁶ mm⁴
Elastic section modulusSy
73.5910³ mm³
Plastic section modulusZy
116.110³ mm³
Radius of gyrationry
27.44mm

Torsion and stability

Torsional constantJ
321.810³ mm⁴
Warping constantCw
101.210⁹ mm⁶

Equivalents in other standards