IR – wide flange (ASTM A6 W)
IR 310x283
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 366mm
- Flange widthbf
- 323mm
- Web thicknesstw
- 26.9mm
- Flange thicknesstf
- 44.2mm
- Distance k (design)kdes
- 59.2mm
- Distance k (detailing)kdet
- 66.7mm
- Distance k1k1
- 34.9mm
- Web clear depthT
- 232mm
- Distance between flange centroidsho
- 323mm
Mass and area
- Mass per lengthm
- 283kg/m
- Cross-sectional areaA
- 36,100mm²
Strong axis x–x
- Moment of inertiaIx
- 78710⁶ mm⁴
- Elastic section modulusSx
- 4,31010³ mm³
- Plastic section modulusZx
- 5,10010³ mm³
- Radius of gyrationrx
- 148mm
Weak axis y–y
- Moment of inertiaIy
- 24510⁶ mm⁴
- Elastic section modulusSy
- 1,52010³ mm³
- Plastic section modulusZy
- 2,34010³ mm³
- Radius of gyrationry
- 82.6mm
Torsion and stability
- Torsional constantJ
- 20,30010³ mm⁴
- Warping constantCw
- 6,34010⁹ mm⁶
- Effective radius of gyrationrts
- 95.8mm
Slenderness ratios
- Flange slendernessbf/2tf
- 3.65
- Web slendernessh/tw
- 9.16