IR – wide flange (ASTM A6 W)
IR 360x64
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 348mm
- Flange widthbf
- 203mm
- Web thicknesstw
- 7.75mm
- Flange thicknesstf
- 13.5mm
- Distance k (design)kdes
- 28.4mm
- Distance k (detailing)kdet
- 34.9mm
- Distance k1k1
- 25.4mm
- Web clear depthT
- 276mm
- Distance between flange centroidsho
- 335mm
Mass and area
- Mass per lengthm
- 64kg/m
- Cross-sectional areaA
- 8,130mm²
Strong axis x–x
- Moment of inertiaIx
- 17810⁶ mm⁴
- Elastic section modulusSx
- 1,03010³ mm³
- Plastic section modulusZx
- 1,14010³ mm³
- Radius of gyrationrx
- 148mm
Weak axis y–y
- Moment of inertiaIy
- 18.810⁶ mm⁴
- Elastic section modulusSy
- 18510³ mm³
- Plastic section modulusZy
- 28310³ mm³
- Radius of gyrationry
- 48mm
Torsion and stability
- Torsional constantJ
- 43710³ mm⁴
- Warping constantCw
- 52410⁹ mm⁶
- Effective radius of gyrationrts
- 55.4mm
Slenderness ratios
- Flange slendernessbf/2tf
- 7.54
- Web slendernessh/tw
- 37.4