IR – wide flange (ASTM A6 W)
IR 250x38.5
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 262mm
- Flange widthbf
- 147mm
- Web thicknesstw
- 6.6mm
- Flange thicknesstf
- 11.2mm
- Distance k (design)kdes
- 18.8mm
- Distance k (detailing)kdet
- 27mm
- Distance k1k1
- 17.5mm
- Web clear depthT
- 210mm
- Distance between flange centroidsho
- 250mm
Mass and area
- Mass per lengthm
- 38.5kg/m
- Cross-sectional areaA
- 4,910mm²
Strong axis x–x
- Moment of inertiaIx
- 59.910⁶ mm⁴
- Elastic section modulusSx
- 45710³ mm³
- Plastic section modulusZx
- 51310³ mm³
- Radius of gyrationrx
- 110mm
Weak axis y–y
- Moment of inertiaIy
- 5.8710⁶ mm⁴
- Elastic section modulusSy
- 80.110³ mm³
- Plastic section modulusZy
- 12310³ mm³
- Radius of gyrationry
- 34.5mm
Torsion and stability
- Torsional constantJ
- 16710³ mm⁴
- Warping constantCw
- 92.610⁹ mm⁶
- Effective radius of gyrationrts
- 40.1mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.56
- Web slendernessh/tw
- 34