IR – wide flange (ASTM A6 W)
IR 840x473
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 894mm
- Flange widthbf
- 406mm
- Web thicknesstw
- 26.4mm
- Flange thicknesstf
- 48mm
- Distance k (design)kdes
- 68.1mm
- Distance k (detailing)kdet
- 81mm
- Distance k1k1
- 44.5mm
- Web clear depthT
- 733mm
- Distance between flange centroidsho
- 846mm
Mass and area
- Mass per lengthm
- 473kg/m
- Cross-sectional areaA
- 60,500mm²
Strong axis x–x
- Moment of inertiaIx
- 8,12010⁶ mm⁴
- Elastic section modulusSx
- 18,20010³ mm³
- Plastic section modulusZx
- 20,80010³ mm³
- Radius of gyrationrx
- 368mm
Weak axis y–y
- Moment of inertiaIy
- 53710⁶ mm⁴
- Elastic section modulusSy
- 2,64010³ mm³
- Plastic section modulusZy
- 4,10010³ mm³
- Radius of gyrationry
- 94.2mm
Torsion and stability
- Torsional constantJ
- 35,10010³ mm⁴
- Warping constantCw
- 95,90010⁹ mm⁶
- Effective radius of gyrationrts
- 112mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.23
- Web slendernessh/tw
- 28.7