IR – wide flange (ASTM A6 W)
IR 310x38.7
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 310mm
- Flange widthbf
- 165mm
- Web thicknesstw
- 5.84mm
- Flange thicknesstf
- 9.65mm
- Distance k (design)kdes
- 17.3mm
- Distance k (detailing)kdet
- 27mm
- Distance k1k1
- 19.1mm
- Web clear depthT
- 257mm
- Distance between flange centroidsho
- 300mm
Mass and area
- Mass per lengthm
- 38.7kg/m
- Cross-sectional areaA
- 4,940mm²
Strong axis x–x
- Moment of inertiaIx
- 84.910⁶ mm⁴
- Elastic section modulusSx
- 54710³ mm³
- Plastic section modulusZx
- 61010³ mm³
- Radius of gyrationrx
- 131mm
Weak axis y–y
- Moment of inertiaIy
- 7.210⁶ mm⁴
- Elastic section modulusSy
- 87.510³ mm³
- Plastic section modulusZy
- 13410³ mm³
- Radius of gyrationry
- 38.4mm
Torsion and stability
- Torsional constantJ
- 12510³ mm⁴
- Warping constantCw
- 16310⁹ mm⁶
- Effective radius of gyrationrts
- 44.4mm
Slenderness ratios
- Flange slendernessbf/2tf
- 8.54
- Web slendernessh/tw
- 47.2