IR – wide flange (ASTM A6 W)
IR 250x28.4
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 259mm
- Flange widthbf
- 102mm
- Web thicknesstw
- 6.35mm
- Flange thicknesstf
- 10mm
- Distance k (design)kdes
- 17.7mm
- Distance k (detailing)kdet
- 23.8mm
- Distance k1k1
- 15.9mm
- Web clear depthT
- 213mm
- Distance between flange centroidsho
- 249mm
Mass and area
- Mass per lengthm
- 28.4kg/m
- Cross-sectional areaA
- 3,630mm²
Strong axis x–x
- Moment of inertiaIx
- 40.110⁶ mm⁴
- Elastic section modulusSx
- 30810³ mm³
- Plastic section modulusZx
- 35410³ mm³
- Radius of gyrationrx
- 105mm
Weak axis y–y
- Moment of inertiaIy
- 1.7910⁶ mm⁴
- Elastic section modulusSy
- 35.110³ mm³
- Plastic section modulusZy
- 54.910³ mm³
- Radius of gyrationry
- 22.2mm
Torsion and stability
- Torsional constantJ
- 9710³ mm⁴
- Warping constantCw
- 27.910⁹ mm⁶
- Effective radius of gyrationrts
- 26.9mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.09
- Web slendernessh/tw
- 35.4