IR – wide flange (ASTM A6 W)
IR 410x67
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 409mm
- Flange widthbf
- 179mm
- Web thicknesstw
- 8.76mm
- Flange thicknesstf
- 14.4mm
- Distance k (design)kdes
- 24.6mm
- Distance k (detailing)kdet
- 31.8mm
- Distance k1k1
- 20.6mm
- Web clear depthT
- 346mm
- Distance between flange centroidsho
- 394mm
Mass and area
- Mass per lengthm
- 67kg/m
- Cross-sectional areaA
- 8,580mm²
Strong axis x–x
- Moment of inertiaIx
- 24410⁶ mm⁴
- Elastic section modulusSx
- 1,19010³ mm³
- Plastic section modulusZx
- 1,35010³ mm³
- Radius of gyrationrx
- 169mm
Weak axis y–y
- Moment of inertiaIy
- 13.710⁶ mm⁴
- Elastic section modulusSy
- 15310³ mm³
- Plastic section modulusZy
- 23810³ mm³
- Radius of gyrationry
- 39.9mm
Torsion and stability
- Torsional constantJ
- 46210³ mm⁴
- Warping constantCw
- 53410⁹ mm⁶
- Effective radius of gyrationrts
- 47.5mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.23
- Web slendernessh/tw
- 41.1