IR – wide flange (ASTM A6 W)
IR 840x576
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 914mm
- Flange widthbf
- 411mm
- Web thicknesstw
- 32mm
- Flange thicknesstf
- 57.9mm
- Distance k (design)kdes
- 78mm
- Distance k (detailing)kdet
- 90.5mm
- Distance k1k1
- 46mm
- Web clear depthT
- 733mm
- Distance between flange centroidsho
- 856mm
Mass and area
- Mass per lengthm
- 576kg/m
- Cross-sectional areaA
- 73,500mm²
Strong axis x–x
- Moment of inertiaIx
- 10,10010⁶ mm⁴
- Elastic section modulusSx
- 22,10010³ mm³
- Plastic section modulusZx
- 25,60010³ mm³
- Radius of gyrationrx
- 371mm
Weak axis y–y
- Moment of inertiaIy
- 67410⁶ mm⁴
- Elastic section modulusSy
- 3,28010³ mm³
- Plastic section modulusZy
- 5,11010³ mm³
- Radius of gyrationry
- 95.8mm
Torsion and stability
- Torsional constantJ
- 61,60010³ mm⁴
- Warping constantCw
- 123,00010⁹ mm⁶
- Effective radius of gyrationrts
- 114mm
Slenderness ratios
- Flange slendernessbf/2tf
- 3.55
- Web slendernessh/tw
- 23.7