IR – wide flange (ASTM A6 W)
IR 1000x249
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 980mm
- Flange widthbf
- 300mm
- Web thicknesstw
- 16.5mm
- Flange thicknesstf
- 26.2mm
- Distance k (design)kdes
- 56.1mm
- Distance k (detailing)kdet
- 58.7mm
- Distance k1k1
- 39.7mm
- Web clear depthT
- 864mm
- Distance between flange centroidsho
- 955mm
Mass and area
- Mass per lengthm
- 249kg/m
- Cross-sectional areaA
- 31,800mm²
Strong axis x–x
- Moment of inertiaIx
- 4,83010⁶ mm⁴
- Elastic section modulusSx
- 9,83010³ mm³
- Plastic section modulusZx
- 11,40010³ mm³
- Radius of gyrationrx
- 389mm
Weak axis y–y
- Moment of inertiaIy
- 11810⁶ mm⁴
- Elastic section modulusSy
- 78510³ mm³
- Plastic section modulusZy
- 1,25010³ mm³
- Radius of gyrationry
- 61mm
Torsion and stability
- Torsional constantJ
- 5,83010³ mm⁴
- Warping constantCw
- 26,80010⁹ mm⁶
- Effective radius of gyrationrts
- 75.7mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.76
- Web slendernessh/tw
- 52.6