UB – universal beams

914x305x345

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 = 308d = 943tf = 39.9tf = 39.9tw = 22.1tw = 22.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
943mm
Flange widthbf
308mm
Web thicknesstw
22.1mm
Flange thicknesstf
39.9mm
Root radiusr
19mm

Mass and area

Mass per lengthm
345.1kg/m
Cross-sectional areaA
43,965mm²
Outside perimeterP
3,041mm

Strong axis x–x

Moment of inertiaIx
6,25610⁶ mm⁴
Elastic section modulusSx
13,26810³ mm³
Plastic section modulusZx
15,34810³ mm³
Radius of gyrationrx
377.2mm

Weak axis y–y

Moment of inertiaIy
195.210⁶ mm⁴
Elastic section modulusSy
1,26710³ mm³
Plastic section modulusZy
2,00310³ mm³
Radius of gyrationry
66.62mm

Torsion and stability

Torsional constantJ
16,58410³ mm⁴
Warping constantCw
39,61710⁹ mm⁶

Equivalents in other standards