UB – universal beams

914x305x313

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 = 309d = 932tf = 34.5tf = 34.5tw = 21.1tw = 21.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
932mm
Flange widthbf
309mm
Web thicknesstw
21.1mm
Flange thicknesstf
34.5mm
Root radiusr
19mm

Mass and area

Mass per lengthm
312.7kg/m
Cross-sectional areaA
39,840mm²
Outside perimeterP
3,025mm

Strong axis x–x

Moment of inertiaIx
5,48210⁶ mm⁴
Elastic section modulusSx
11,76510³ mm³
Plastic section modulusZx
13,62910³ mm³
Radius of gyrationrx
371mm

Weak axis y–y

Moment of inertiaIy
170.410⁶ mm⁴
Elastic section modulusSy
1,10310³ mm³
Plastic section modulusZy
1,74810³ mm³
Radius of gyrationry
65.4mm

Torsion and stability

Torsional constantJ
11,71510³ mm⁴
Warping constantCw
34,16310⁹ mm⁶

Equivalents in other standards