IR – wide flange (ASTM A6 W)
IR 310x226
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 348mm
- Flange widthbf
- 318mm
- Web thicknesstw
- 22.1mm
- Flange thicknesstf
- 35.6mm
- Distance k (design)kdes
- 50.8mm
- Distance k (detailing)kdet
- 58.7mm
- Distance k1k1
- 31.8mm
- Web clear depthT
- 232mm
- Distance between flange centroidsho
- 312mm
Mass and area
- Mass per lengthm
- 226kg/m
- Cross-sectional areaA
- 28,800mm²
Strong axis x–x
- Moment of inertiaIx
- 59510⁶ mm⁴
- Elastic section modulusSx
- 3,42010³ mm³
- Plastic section modulusZx
- 3,98010³ mm³
- Radius of gyrationrx
- 144mm
Weak axis y–y
- Moment of inertiaIy
- 18910⁶ mm⁴
- Elastic section modulusSy
- 1,19010³ mm³
- Plastic section modulusZy
- 1,82010³ mm³
- Radius of gyrationry
- 81mm
Torsion and stability
- Torsional constantJ
- 10,70010³ mm⁴
- Warping constantCw
- 4,62010⁹ mm⁶
- Effective radius of gyrationrts
- 93mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.46
- Web slendernessh/tw
- 11.2