UB – universal beams

914x305x521

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 = 319d = 981tf = 58.9tf = 58.9tw = 33tw = 33
Cross-section, to scaledimensions in mm

Dimensions

Depthd
981mm
Flange widthbf
319mm
Web thicknesstw
33mm
Flange thicknesstf
58.9mm
Root radiusr
19mm

Mass and area

Mass per lengthm
521kg/m
Cross-sectional areaA
66,374mm²
Outside perimeterP
3,139mm

Strong axis x–x

Moment of inertiaIx
9,82410⁶ mm⁴
Elastic section modulusSx
20,02910³ mm³
Plastic section modulusZx
23,60510³ mm³
Radius of gyrationrx
384.7mm

Weak axis y–y

Moment of inertiaIy
321.410⁶ mm⁴
Elastic section modulusSy
2,01510³ mm³
Plastic section modulusZy
3,23810³ mm³
Radius of gyrationry
69.59mm

Torsion and stability

Torsional constantJ
54,05110³ mm⁴
Warping constantCw
67,73810⁹ mm⁶

Equivalents in other standards