UB – universal beams

914x305x474

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 = 316d = 971tf = 54.1tf = 54.1tw = 30tw = 30
Cross-section, to scaledimensions in mm

Dimensions

Depthd
971mm
Flange widthbf
316mm
Web thicknesstw
30mm
Flange thicknesstf
54.1mm
Root radiusr
19mm

Mass and area

Mass per lengthm
474kg/m
Cross-sectional areaA
60,385mm²
Outside perimeterP
3,113mm

Strong axis x–x

Moment of inertiaIx
8,85710⁶ mm⁴
Elastic section modulusSx
18,24310³ mm³
Plastic section modulusZx
21,39110³ mm³
Radius of gyrationrx
383mm

Weak axis y–y

Moment of inertiaIy
286.610⁶ mm⁴
Elastic section modulusSy
1,81410³ mm³
Plastic section modulusZy
2,90110³ mm³
Radius of gyrationry
68.89mm

Torsion and stability

Torsional constantJ
41,46710³ mm⁴
Warping constantCw
59,79910⁹ mm⁶

Equivalents in other standards