IR – wide flange (ASTM A6 W)
IR 360x237
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 381mm
- Flange widthbf
- 396mm
- Web thicknesstw
- 18.9mm
- Flange thicknesstf
- 30.2mm
- Distance k (design)kdes
- 45.5mm
- Distance k (detailing)kdet
- 63.5mm
- Distance k1k1
- 39.7mm
- Web clear depthT
- 254mm
- Distance between flange centroidsho
- 351mm
Mass and area
- Mass per lengthm
- 237kg/m
- Cross-sectional areaA
- 30,100mm²
Strong axis x–x
- Moment of inertiaIx
- 79110⁶ mm⁴
- Elastic section modulusSx
- 4,16010³ mm³
- Plastic section modulusZx
- 4,70010³ mm³
- Radius of gyrationrx
- 162mm
Weak axis y–y
- Moment of inertiaIy
- 31110⁶ mm⁴
- Elastic section modulusSy
- 1,58010³ mm³
- Plastic section modulusZy
- 2,39010³ mm³
- Radius of gyrationry
- 102mm
Torsion and stability
- Torsional constantJ
- 8,20010³ mm⁴
- Warping constantCw
- 9,56010⁹ mm⁶
- Effective radius of gyrationrts
- 115mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.54
- Web slendernessh/tw
- 15.3