UB – universal beams

914x305x271

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
xybf = 307d = 923tf = 30tf = 30tw = 18.4tw = 18.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
923mm
Flange widthbf
307mm
Web thicknesstw
18.4mm
Flange thicknesstf
30mm
Root radiusr
19mm

Mass and area

Mass per lengthm
271.7kg/m
Cross-sectional areaA
34,609mm²
Outside perimeterP
3,005mm

Strong axis x–x

Moment of inertiaIx
4,71610⁶ mm⁴
Elastic section modulusSx
10,21810³ mm³
Plastic section modulusZx
11,78310³ mm³
Radius of gyrationrx
369.1mm

Weak axis y–y

Moment of inertiaIy
145.210⁶ mm⁴
Elastic section modulusSy
945.810³ mm³
Plastic section modulusZy
1,49110³ mm³
Radius of gyrationry
64.77mm

Torsion and stability

Torsional constantJ
7,75010³ mm⁴
Warping constantCw
28,84210⁹ mm⁶

Equivalents in other standards