IR – wide flange (ASTM A6 W)
IR 840x359
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 869mm
- Flange widthbf
- 404mm
- Web thicknesstw
- 21.1mm
- Flange thicknesstf
- 35.6mm
- Distance k (design)kdes
- 55.6mm
- Distance k (detailing)kdet
- 68.3mm
- Distance k1k1
- 41.3mm
- Web clear depthT
- 733mm
- Distance between flange centroidsho
- 833mm
Mass and area
- Mass per lengthm
- 359kg/m
- Cross-sectional areaA
- 45,900mm²
Strong axis x–x
- Moment of inertiaIx
- 5,91010⁶ mm⁴
- Elastic section modulusSx
- 13,60010³ mm³
- Plastic section modulusZx
- 15,40010³ mm³
- Radius of gyrationrx
- 358mm
Weak axis y–y
- Moment of inertiaIy
- 38810⁶ mm⁴
- Elastic section modulusSy
- 1,93010³ mm³
- Plastic section modulusZy
- 2,98010³ mm³
- Radius of gyrationry
- 91.9mm
Torsion and stability
- Torsional constantJ
- 15,10010³ mm⁴
- Warping constantCw
- 67,40010⁹ mm⁶
- Effective radius of gyrationrts
- 109mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.66
- Web slendernessh/tw
- 35.9