IR – wide flange (ASTM A6 W)
IR 610x155
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 612mm
- Flange widthbf
- 325mm
- Web thicknesstw
- 12.7mm
- Flange thicknesstf
- 19.1mm
- Distance k (design)kdes
- 31.8mm
- Distance k (detailing)kdet
- 52.4mm
- Distance k1k1
- 36.5mm
- Web clear depthT
- 508mm
- Distance between flange centroidsho
- 594mm
Mass and area
- Mass per lengthm
- 155kg/m
- Cross-sectional areaA
- 19,800mm²
Strong axis x–x
- Moment of inertiaIx
- 1,29010⁶ mm⁴
- Elastic section modulusSx
- 4,23010³ mm³
- Plastic section modulusZx
- 4,74010³ mm³
- Radius of gyrationrx
- 257mm
Weak axis y–y
- Moment of inertiaIy
- 10810⁶ mm⁴
- Elastic section modulusSy
- 66710³ mm³
- Plastic section modulusZy
- 1,02010³ mm³
- Radius of gyrationry
- 73.9mm
Torsion and stability
- Torsional constantJ
- 1,96010³ mm⁴
- Warping constantCw
- 9,45010⁹ mm⁶
- Effective radius of gyrationrts
- 86.9mm
Slenderness ratios
- Flange slendernessbf/2tf
- 8.5
- Web slendernessh/tw
- 43.1