UB – universal beams

178x102x19

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
Singapore uses BS / BS EN sections; same data as the United Kingdom.
xybf = 101.2d = 177.8tf = 7.9tf = 7.9tw = 4.8tw = 4.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
177.8mm
Flange widthbf
101.2mm
Web thicknesstw
4.8mm
Flange thicknesstf
7.9mm
Root radiusr
7.6mm

Mass and area

Mass per lengthm
19.05kg/m
Cross-sectional areaA
2,426mm²
Outside perimeterP
737.8mm

Strong axis x–x

Moment of inertiaIx
13.5610⁶ mm⁴
Elastic section modulusSx
152.510³ mm³
Plastic section modulusZx
171.310³ mm³
Radius of gyrationrx
74.76mm

Weak axis y–y

Moment of inertiaIy
1.36710⁶ mm⁴
Elastic section modulusSy
27.0210³ mm³
Plastic section modulusZy
41.5910³ mm³
Radius of gyrationry
23.74mm

Torsion and stability

Torsional constantJ
44.1610³ mm⁴
Warping constantCw
9.84810⁹ mm⁶

Equivalents in other standards