IR – wide flange (ASTM A6 W)
IR 250x32.7
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 259mm
- Flange widthbf
- 146mm
- Web thicknesstw
- 6.1mm
- Flange thicknesstf
- 9.14mm
- Distance k (design)kdes
- 16.8mm
- Distance k (detailing)kdet
- 23.8mm
- Distance k1k1
- 15.9mm
- Web clear depthT
- 210mm
- Distance between flange centroidsho
- 250mm
Mass and area
- Mass per lengthm
- 32.7kg/m
- Cross-sectional areaA
- 4,190mm²
Strong axis x–x
- Moment of inertiaIx
- 49.110⁶ mm⁴
- Elastic section modulusSx
- 38010³ mm³
- Plastic section modulusZx
- 42610³ mm³
- Radius of gyrationrx
- 108mm
Weak axis y–y
- Moment of inertiaIy
- 4.7510⁶ mm⁴
- Elastic section modulusSy
- 65.110³ mm³
- Plastic section modulusZy
- 10010³ mm³
- Radius of gyrationry
- 33.8mm
Torsion and stability
- Torsional constantJ
- 99.510³ mm⁴
- Warping constantCw
- 73.810⁹ mm⁶
- Effective radius of gyrationrts
- 39.4mm
Slenderness ratios
- Flange slendernessbf/2tf
- 7.99
- Web slendernessh/tw
- 36.9