IR – wide flange (ASTM A6 W)
IR 920x656
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 988mm
- Flange widthbf
- 432mm
- Web thicknesstw
- 34.5mm
- Flange thicknesstf
- 62mm
- Distance k (design)kdes
- 86.1mm
- Distance k (detailing)kdet
- 95.3mm
- Distance k1k1
- 47.6mm
- Web clear depthT
- 797mm
- Distance between flange centroidsho
- 927mm
Mass and area
- Mass per lengthm
- 656kg/m
- Cross-sectional areaA
- 83,900mm²
Strong axis x–x
- Moment of inertiaIx
- 13,40010⁶ mm⁴
- Elastic section modulusSx
- 27,00010³ mm³
- Plastic section modulusZx
- 31,30010³ mm³
- Radius of gyrationrx
- 399mm
Weak axis y–y
- Moment of inertiaIy
- 82810⁶ mm⁴
- Elastic section modulusSy
- 3,85010³ mm³
- Plastic section modulusZy
- 6,03010³ mm³
- Radius of gyrationry
- 99.6mm
Torsion and stability
- Torsional constantJ
- 80,70010³ mm⁴
- Warping constantCw
- 178,00010⁹ mm⁶
- Effective radius of gyrationrts
- 119mm
Slenderness ratios
- Flange slendernessbf/2tf
- 3.48
- Web slendernessh/tw
- 23.6