UB – universal beams

914x305x238

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 = 305d = 915tf = 25.9tf = 25.9tw = 16.5tw = 16.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
915mm
Flange widthbf
305mm
Web thicknesstw
16.5mm
Flange thicknesstf
25.9mm
Root radiusr
19mm

Mass and area

Mass per lengthm
238.3kg/m
Cross-sectional areaA
30,352mm²
Outside perimeterP
2,984mm

Strong axis x–x

Moment of inertiaIx
4,06410⁶ mm⁴
Elastic section modulusSx
8,88310³ mm³
Plastic section modulusZx
10,23010³ mm³
Radius of gyrationrx
365.9mm

Weak axis y–y

Moment of inertiaIy
122.910⁶ mm⁴
Elastic section modulusSy
805.610³ mm³
Plastic section modulusZy
1,26710³ mm³
Radius of gyrationry
63.62mm

Torsion and stability

Torsional constantJ
5,18810³ mm⁴
Warping constantCw
24,20410⁹ mm⁶

Equivalents in other standards