UB – universal beams

356x171x51

Standard: BS 4-1:2005Source: Primary geometry (h, b, tw, tf, r) — calculated properties (exact engine)
xybf = 171.5d = 355tf = 11.5tf = 11.5tw = 7.4tw = 7.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
355mm
Flange widthbf
171.5mm
Web thicknesstw
7.4mm
Flange thicknesstf
11.5mm
Root radiusr
10.2mm

Mass and area

Mass per lengthm
50.95kg/m
Cross-sectional areaA
6,491mm²
Outside perimeterP
1,364mm

Strong axis x–x

Moment of inertiaIx
141.410⁶ mm⁴
Elastic section modulusSx
796.410³ mm³
Plastic section modulusZx
89610³ mm³
Radius of gyrationrx
147.6mm

Weak axis y–y

Moment of inertiaIy
9.68310⁶ mm⁴
Elastic section modulusSy
112.910³ mm³
Plastic section modulusZy
174.210³ mm³
Radius of gyrationry
38.62mm

Torsion and stability

Torsional constantJ
24010³ mm⁴
Warping constantCw
285.210⁹ mm⁶

Equivalents in other standards