IR – wide flange (ASTM A6 W)
IR 920x201
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 904mm
- Flange widthbf
- 305mm
- Web thicknesstw
- 15.2mm
- Flange thicknesstf
- 20.1mm
- Distance k (design)kdes
- 39.1mm
- Distance k (detailing)kdet
- 52.4mm
- Distance k1k1
- 38.1mm
- Web clear depthT
- 800mm
- Distance between flange centroidsho
- 884mm
Mass and area
- Mass per lengthm
- 201kg/m
- Cross-sectional areaA
- 25,700mm²
Strong axis x–x
- Moment of inertiaIx
- 3,25010⁶ mm⁴
- Elastic section modulusSx
- 7,19010³ mm³
- Plastic section modulusZx
- 8,34010³ mm³
- Radius of gyrationrx
- 356mm
Weak axis y–y
- Moment of inertiaIy
- 93.710⁶ mm⁴
- Elastic section modulusSy
- 61810³ mm³
- Plastic section modulusZy
- 97810³ mm³
- Radius of gyrationry
- 60.5mm
Torsion and stability
- Torsional constantJ
- 2,91010³ mm⁴
- Warping constantCw
- 18,30010⁹ mm⁶
- Effective radius of gyrationrts
- 75.9mm
Slenderness ratios
- Flange slendernessbf/2tf
- 7.56
- Web slendernessh/tw
- 54.1