IR – wide flange (ASTM A6 W)
IR 360x79
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 353mm
- Flange widthbf
- 205mm
- Web thicknesstw
- 9.4mm
- Flange thicknesstf
- 16.8mm
- Distance k (design)kdes
- 31.8mm
- Distance k (detailing)kdet
- 38.1mm
- Distance k1k1
- 25.4mm
- Web clear depthT
- 276mm
- Distance between flange centroidsho
- 335mm
Mass and area
- Mass per lengthm
- 79kg/m
- Cross-sectional areaA
- 10,100mm²
Strong axis x–x
- Moment of inertiaIx
- 22510⁶ mm⁴
- Elastic section modulusSx
- 1,27010³ mm³
- Plastic section modulusZx
- 1,43010³ mm³
- Radius of gyrationrx
- 150mm
Weak axis y–y
- Moment of inertiaIy
- 2410⁶ mm⁴
- Elastic section modulusSy
- 23410³ mm³
- Plastic section modulusZy
- 36110³ mm³
- Radius of gyrationry
- 48.8mm
Torsion and stability
- Torsional constantJ
- 80710³ mm⁴
- Warping constantCw
- 68210⁹ mm⁶
- Effective radius of gyrationrts
- 56.4mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.11
- Web slendernessh/tw
- 30.9