IR – wide flange (ASTM A6 W)
IR 760x434
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 813mm
- Flange widthbf
- 389mm
- Web thicknesstw
- 25.9mm
- Flange thicknesstf
- 47mm
- Distance k (design)kdes
- 67.1mm
- Distance k (detailing)kdet
- 79.4mm
- Distance k1k1
- 44.5mm
- Web clear depthT
- 654mm
- Distance between flange centroidsho
- 767mm
Mass and area
- Mass per lengthm
- 434kg/m
- Cross-sectional areaA
- 55,500mm²
Strong axis x–x
- Moment of inertiaIx
- 6,20010⁶ mm⁴
- Elastic section modulusSx
- 15,20010³ mm³
- Plastic section modulusZx
- 17,40010³ mm³
- Radius of gyrationrx
- 335mm
Weak axis y–y
- Moment of inertiaIy
- 45810⁶ mm⁴
- Elastic section modulusSy
- 2,36010³ mm³
- Plastic section modulusZy
- 3,65010³ mm³
- Radius of gyrationry
- 90.9mm
Torsion and stability
- Torsional constantJ
- 31,30010³ mm⁴
- Warping constantCw
- 67,10010⁹ mm⁶
- Effective radius of gyrationrts
- 107mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.12
- Web slendernessh/tw
- 26.2