UB – universal beams

914x305x425

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 = 313d = 961tf = 49tf = 49tw = 26.9tw = 26.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
961mm
Flange widthbf
313mm
Web thicknesstw
26.9mm
Flange thicknesstf
49mm
Root radiusr
19mm

Mass and area

Mass per lengthm
425.5kg/m
Cross-sectional areaA
54,199mm²
Outside perimeterP
3,088mm

Strong axis x–x

Moment of inertiaIx
7,88210⁶ mm⁴
Elastic section modulusSx
16,40310³ mm³
Plastic section modulusZx
19,12810³ mm³
Radius of gyrationrx
381.3mm

Weak axis y–y

Moment of inertiaIy
251.910⁶ mm⁴
Elastic section modulusSy
1,61010³ mm³
Plastic section modulusZy
2,56210³ mm³
Radius of gyrationry
68.18mm

Torsion and stability

Torsional constantJ
30,54110³ mm⁴
Warping constantCw
52,07210⁹ mm⁶

Equivalents in other standards