IR – wide flange (ASTM A6 W)
IR 310x79
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 307mm
- Flange widthbf
- 254mm
- Web thicknesstw
- 8.76mm
- Flange thicknesstf
- 14.6mm
- Distance k (design)kdes
- 30mm
- Distance k (detailing)kdet
- 34.9mm
- Distance k1k1
- 23.8mm
- Web clear depthT
- 235mm
- Distance between flange centroidsho
- 292mm
Mass and area
- Mass per lengthm
- 79kg/m
- Cross-sectional areaA
- 10,100mm²
Strong axis x–x
- Moment of inertiaIx
- 17710⁶ mm⁴
- Elastic section modulusSx
- 1,16010³ mm³
- Plastic section modulusZx
- 1,28010³ mm³
- Radius of gyrationrx
- 133mm
Weak axis y–y
- Moment of inertiaIy
- 39.910⁶ mm⁴
- Elastic section modulusSy
- 31510³ mm³
- Plastic section modulusZy
- 47710³ mm³
- Radius of gyrationry
- 63mm
Torsion and stability
- Torsional constantJ
- 65810³ mm⁴
- Warping constantCw
- 84910⁹ mm⁶
- Effective radius of gyrationrts
- 70.9mm
Slenderness ratios
- Flange slendernessbf/2tf
- 8.69
- Web slendernessh/tw
- 28.1