IR – wide flange (ASTM A6 W)
IR 840x392
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 876mm
- Flange widthbf
- 401mm
- Web thicknesstw
- 22.1mm
- Flange thicknesstf
- 39.9mm
- Distance k (design)kdes
- 59.9mm
- Distance k (detailing)kdet
- 71.4mm
- Distance k1k1
- 41.3mm
- Web clear depthT
- 733mm
- Distance between flange centroidsho
- 836mm
Mass and area
- Mass per lengthm
- 392kg/m
- Cross-sectional areaA
- 49,900mm²
Strong axis x–x
- Moment of inertiaIx
- 6,62010⁶ mm⁴
- Elastic section modulusSx
- 15,10010³ mm³
- Plastic section modulusZx
- 17,00010³ mm³
- Radius of gyrationrx
- 363mm
Weak axis y–y
- Moment of inertiaIy
- 43310⁶ mm⁴
- Elastic section modulusSy
- 2,15010³ mm³
- Plastic section modulusZy
- 3,31010³ mm³
- Radius of gyrationry
- 93mm
Torsion and stability
- Torsional constantJ
- 20,30010³ mm⁴
- Warping constantCw
- 75,50010⁹ mm⁶
- Effective radius of gyrationrts
- 109mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.03
- Web slendernessh/tw
- 34.3