IR – wide flange (ASTM A6 W)
IR 200x71
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 216mm
- Flange widthbf
- 206mm
- Web thicknesstw
- 10.2mm
- Flange thicknesstf
- 17.4mm
- Distance k (design)kdes
- 27.4mm
- Distance k (detailing)kdet
- 34.9mm
- Distance k1k1
- 20.6mm
- Web clear depthT
- 146mm
- Distance between flange centroidsho
- 199mm
Mass and area
- Mass per lengthm
- 71kg/m
- Cross-sectional areaA
- 9,100mm²
Strong axis x–x
- Moment of inertiaIx
- 76.610⁶ mm⁴
- Elastic section modulusSx
- 70810³ mm³
- Plastic section modulusZx
- 80310³ mm³
- Radius of gyrationrx
- 91.7mm
Weak axis y–y
- Moment of inertiaIy
- 25.310⁶ mm⁴
- Elastic section modulusSy
- 24610³ mm³
- Plastic section modulusZy
- 37510³ mm³
- Radius of gyrationry
- 52.8mm
Torsion and stability
- Torsional constantJ
- 81610³ mm⁴
- Warping constantCw
- 25010⁹ mm⁶
- Effective radius of gyrationrts
- 59.7mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.92
- Web slendernessh/tw
- 15.9