IR – wide flange (ASTM A6 W)
IR 460x158
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 475mm
- Flange widthbf
- 284mm
- Web thicknesstw
- 15mm
- Flange thicknesstf
- 23.9mm
- Distance k (design)kdes
- 34mm
- Distance k (detailing)kdet
- 46mm
- Distance k1k1
- 28.6mm
- Web clear depthT
- 384mm
- Distance between flange centroidsho
- 452mm
Mass and area
- Mass per lengthm
- 158kg/m
- Cross-sectional areaA
- 20,100mm²
Strong axis x–x
- Moment of inertiaIx
- 79510⁶ mm⁴
- Elastic section modulusSx
- 3,34010³ mm³
- Plastic section modulusZx
- 3,77010³ mm³
- Radius of gyrationrx
- 199mm
Weak axis y–y
- Moment of inertiaIy
- 91.610⁶ mm⁴
- Elastic section modulusSy
- 64610³ mm³
- Plastic section modulusZy
- 99110³ mm³
- Radius of gyrationry
- 67.6mm
Torsion and stability
- Torsional constantJ
- 3,11010³ mm⁴
- Warping constantCw
- 4,67010⁹ mm⁶
- Effective radius of gyrationrts
- 78.7mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.96
- Web slendernessh/tw
- 27.2