IR – wide flange (ASTM A6 W)
IR 310x253
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 356mm
- Flange widthbf
- 320mm
- Web thicknesstw
- 24.4mm
- Flange thicknesstf
- 39.6mm
- Distance k (design)kdes
- 54.9mm
- Distance k (detailing)kdet
- 61.9mm
- Distance k1k1
- 33.3mm
- Web clear depthT
- 232mm
- Distance between flange centroidsho
- 315mm
Mass and area
- Mass per lengthm
- 253kg/m
- Cross-sectional areaA
- 32,300mm²
Strong axis x–x
- Moment of inertiaIx
- 68710⁶ mm⁴
- Elastic section modulusSx
- 3,85010³ mm³
- Plastic section modulusZx
- 4,51010³ mm³
- Radius of gyrationrx
- 146mm
Weak axis y–y
- Moment of inertiaIy
- 21510⁶ mm⁴
- Elastic section modulusSy
- 1,35010³ mm³
- Plastic section modulusZy
- 2,06010³ mm³
- Radius of gyrationry
- 81.8mm
Torsion and stability
- Torsional constantJ
- 14,80010³ mm⁴
- Warping constantCw
- 5,40010⁹ mm⁶
- Effective radius of gyrationrts
- 94mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.03
- Web slendernessh/tw
- 10.1