IR – wide flange (ASTM A6 W)
IR 920x390
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 937mm
- Flange widthbf
- 422mm
- Web thicknesstw
- 21.3mm
- Flange thicknesstf
- 36.6mm
- Distance k (design)kdes
- 60.7mm
- Distance k (detailing)kdet
- 69.9mm
- Distance k1k1
- 41.3mm
- Web clear depthT
- 797mm
- Distance between flange centroidsho
- 902mm
Mass and area
- Mass per lengthm
- 390kg/m
- Cross-sectional areaA
- 49,800mm²
Strong axis x–x
- Moment of inertiaIx
- 7,45010⁶ mm⁴
- Elastic section modulusSx
- 15,90010³ mm³
- Plastic section modulusZx
- 18,00010³ mm³
- Radius of gyrationrx
- 389mm
Weak axis y–y
- Moment of inertiaIy
- 45410⁶ mm⁴
- Elastic section modulusSy
- 2,16010³ mm³
- Plastic section modulusZy
- 3,34010³ mm³
- Radius of gyrationry
- 95.5mm
Torsion and stability
- Torsional constantJ
- 17,30010³ mm⁴
- Warping constantCw
- 91,80010⁹ mm⁶
- Effective radius of gyrationrts
- 113mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.75
- Web slendernessh/tw
- 38.2