UB – universal beams

1016x305x249

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 = 300d = 980.1tf = 26tf = 26tw = 16.5tw = 16.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
980.1mm
Flange widthbf
300mm
Web thicknesstw
16.5mm
Flange thicknesstf
26mm
Root radiusr
30mm

Mass and area

Mass per lengthm
248.7kg/m
Cross-sectional areaA
31,686mm²
Outside perimeterP
3,076mm

Strong axis x–x

Moment of inertiaIx
4,81210⁶ mm⁴
Elastic section modulusSx
9,81910³ mm³
Plastic section modulusZx
11,34910³ mm³
Radius of gyrationrx
389.7mm

Weak axis y–y

Moment of inertiaIy
117.510⁶ mm⁴
Elastic section modulusSy
783.610³ mm³
Plastic section modulusZy
1,24510³ mm³
Radius of gyrationry
60.91mm

Torsion and stability

Torsional constantJ
5,84410³ mm⁴
Warping constantCw
26,62710⁹ mm⁶

Equivalents in other standards