IR – wide flange (ASTM A6 W)
IR 920x344
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 927mm
- Flange widthbf
- 419mm
- Web thicknesstw
- 19.3mm
- Flange thicknesstf
- 32mm
- Distance k (design)kdes
- 56.1mm
- Distance k (detailing)kdet
- 65.1mm
- Distance k1k1
- 39.7mm
- Web clear depthT
- 797mm
- Distance between flange centroidsho
- 894mm
Mass and area
- Mass per lengthm
- 344kg/m
- Cross-sectional areaA
- 44,000mm²
Strong axis x–x
- Moment of inertiaIx
- 6,49010⁶ mm⁴
- Elastic section modulusSx
- 14,00010³ mm³
- Plastic section modulusZx
- 15,80010³ mm³
- Radius of gyrationrx
- 384mm
Weak axis y–y
- Moment of inertiaIy
- 39110⁶ mm⁴
- Elastic section modulusSy
- 1,87010³ mm³
- Plastic section modulusZy
- 2,88010³ mm³
- Radius of gyrationry
- 94.2mm
Torsion and stability
- Torsional constantJ
- 11,90010³ mm⁴
- Warping constantCw
- 78,40010⁹ mm⁶
- Effective radius of gyrationrts
- 112mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.54
- Web slendernessh/tw
- 42.2