IR – wide flange (ASTM A6 W)
IR 310x375
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 391mm
- Flange widthbf
- 330mm
- Web thicknesstw
- 35.6mm
- Flange thicknesstf
- 57.2mm
- Distance k (design)kdes
- 72.4mm
- Distance k (detailing)kdet
- 79.4mm
- Distance k1k1
- 38.1mm
- Web clear depthT
- 232mm
- Distance between flange centroidsho
- 335mm
Mass and area
- Mass per lengthm
- 375kg/m
- Cross-sectional areaA
- 47,800mm²
Strong axis x–x
- Moment of inertiaIx
- 1,13010⁶ mm⁴
- Elastic section modulusSx
- 5,78010³ mm³
- Plastic section modulusZx
- 7,01010³ mm³
- Radius of gyrationrx
- 154mm
Weak axis y–y
- Moment of inertiaIy
- 34510⁶ mm⁴
- Elastic section modulusSy
- 2,08010³ mm³
- Plastic section modulusZy
- 3,21010³ mm³
- Radius of gyrationry
- 84.8mm
Torsion and stability
- Torsional constantJ
- 45,00010³ mm⁴
- Warping constantCw
- 9,61010⁹ mm⁶
- Effective radius of gyrationrts
- 99.8mm
Slenderness ratios
- Flange slendernessbf/2tf
- 2.89
- Web slendernessh/tw
- 6.96