IR – wide flange (ASTM A6 W)
IR 610x551
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 711mm
- Flange widthbf
- 348mm
- Web thicknesstw
- 38.6mm
- Flange thicknesstf
- 69.1mm
- Distance k (design)kdes
- 81.8mm
- Distance k (detailing)kdet
- 102mm
- Distance k1k1
- 50.8mm
- Web clear depthT
- 508mm
- Distance between flange centroidsho
- 643mm
Mass and area
- Mass per lengthm
- 551kg/m
- Cross-sectional areaA
- 70,300mm²
Strong axis x–x
- Moment of inertiaIx
- 5,58010⁶ mm⁴
- Elastic section modulusSx
- 15,70010³ mm³
- Plastic section modulusZx
- 18,50010³ mm³
- Radius of gyrationrx
- 282mm
Weak axis y–y
- Moment of inertiaIy
- 48310⁶ mm⁴
- Elastic section modulusSy
- 2,79010³ mm³
- Plastic section modulusZy
- 4,38010³ mm³
- Radius of gyrationry
- 83.1mm
Torsion and stability
- Torsional constantJ
- 83,70010³ mm⁴
- Warping constantCw
- 49,90010⁹ mm⁶
- Effective radius of gyrationrts
- 99.6mm
Slenderness ratios
- Flange slendernessbf/2tf
- 2.51
- Web slendernessh/tw
- 14.2