TFB – tapered-flange beams

100TFB7.2

Standard: AS/NZS 3679.1Source: InfraBuild dimensions, Hot Rolled & Structural Steel Products (ed. 9) — calculated properties
Published area (Ag) shown as a check: difference < 1.5% on every section.
xybf = 45d = 100tf = 6tf = 6tw = 4tw = 4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
100mm
Flange widthbf
45mm
Web thicknesstw
4mm
Flange thicknesstf
6mm
Root radiusr1
7mm
Toe radiusr2
3.5mm

Mass and area

Mass per lengthm
7.18kg/m
Cross-sectional areaA
914.6mm²
Published area (standard)A pub.
917mm²
Outside perimeterP
348.4mm

Strong axis x–x

Moment of inertiaIx
1.45510⁶ mm⁴
Elastic section modulusSx
29.110³ mm³
Plastic section modulusZx
3410³ mm³
Radius of gyrationrx
39.88mm

Weak axis y–y

Moment of inertiaIy
0.0784810⁶ mm⁴
Elastic section modulusSy
3.48810³ mm³
Plastic section modulusZy
5.95910³ mm³
Radius of gyrationry
9.264mm

Equivalents in other standards