UB – universal beams

127x76x13

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
xybf = 76d = 127tf = 7.6tf = 7.6tw = 4tw = 4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
127mm
Flange widthbf
76mm
Web thicknesstw
4mm
Flange thicknesstf
7.6mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
12.97kg/m
Cross-sectional areaA
1,652mm²
Outside perimeterP
537mm

Strong axis x–x

Moment of inertiaIx
4.73410⁶ mm⁴
Elastic section modulusSx
74.5610³ mm³
Plastic section modulusZx
84.1510³ mm³
Radius of gyrationrx
53.53mm

Weak axis y–y

Moment of inertiaIy
0.557410⁶ mm⁴
Elastic section modulusSy
14.6710³ mm³
Plastic section modulusZy
22.5810³ mm³
Radius of gyrationry
18.37mm

Torsion and stability

Torsional constantJ
27.9610³ mm⁴
Warping constantCw
1.98210⁹ mm⁶

Equivalents in other standards