IR – wide flange (ASTM A6 W)
IR 920x491
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 958mm
- Flange widthbf
- 422mm
- Web thicknesstw
- 25.9mm
- Flange thicknesstf
- 47mm
- Distance k (design)kdes
- 71.1mm
- Distance k (detailing)kdet
- 79.4mm
- Distance k1k1
- 44.5mm
- Web clear depthT
- 797mm
- Distance between flange centroidsho
- 912mm
Mass and area
- Mass per lengthm
- 491kg/m
- Cross-sectional areaA
- 62,500mm²
Strong axis x–x
- Moment of inertiaIx
- 9,70010⁶ mm⁴
- Elastic section modulusSx
- 20,30010³ mm³
- Plastic section modulusZx
- 23,10010³ mm³
- Radius of gyrationrx
- 394mm
Weak axis y–y
- Moment of inertiaIy
- 59110⁶ mm⁴
- Elastic section modulusSy
- 2,80010³ mm³
- Plastic section modulusZy
- 4,34010³ mm³
- Radius of gyrationry
- 97.3mm
Torsion and stability
- Torsional constantJ
- 35,10010³ mm⁴
- Warping constantCw
- 122,00010⁹ mm⁶
- Effective radius of gyrationrts
- 115mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.49
- Web slendernessh/tw
- 31.4