IR – wide flange (ASTM A6 W)
IR 690x152
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 688mm
- Flange widthbf
- 254mm
- Web thicknesstw
- 13.1mm
- Flange thicknesstf
- 21.1mm
- Distance k (design)kdes
- 36.3mm
- Distance k (detailing)kdet
- 52.4mm
- Distance k1k1
- 36.5mm
- Web clear depthT
- 584mm
- Distance between flange centroidsho
- 668mm
Mass and area
- Mass per lengthm
- 152kg/m
- Cross-sectional areaA
- 19,400mm²
Strong axis x–x
- Moment of inertiaIx
- 1,51010⁶ mm⁴
- Elastic section modulusSx
- 4,38010³ mm³
- Plastic section modulusZx
- 5,00010³ mm³
- Radius of gyrationrx
- 279mm
Weak axis y–y
- Moment of inertiaIy
- 57.910⁶ mm⁴
- Elastic section modulusSy
- 45610³ mm³
- Plastic section modulusZy
- 71110³ mm³
- Radius of gyrationry
- 54.6mm
Torsion and stability
- Torsional constantJ
- 2,20010³ mm⁴
- Warping constantCw
- 6,44010⁹ mm⁶
- Effective radius of gyrationrts
- 66.5mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.03
- Web slendernessh/tw
- 47.1