IR – wide flange (ASTM A6 W)
IR 920x238
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 914mm
- Flange widthbf
- 305mm
- Web thicknesstw
- 16.5mm
- Flange thicknesstf
- 25.9mm
- Distance k (design)kdes
- 45mm
- Distance k (detailing)kdet
- 57.2mm
- Distance k1k1
- 39.7mm
- Web clear depthT
- 800mm
- Distance between flange centroidsho
- 889mm
Mass and area
- Mass per lengthm
- 238kg/m
- Cross-sectional areaA
- 30,300mm²
Strong axis x–x
- Moment of inertiaIx
- 4,06010⁶ mm⁴
- Elastic section modulusSx
- 8,88010³ mm³
- Plastic section modulusZx
- 10,20010³ mm³
- Radius of gyrationrx
- 366mm
Weak axis y–y
- Moment of inertiaIy
- 12310⁶ mm⁴
- Elastic section modulusSy
- 80510³ mm³
- Plastic section modulusZy
- 1,27010³ mm³
- Radius of gyrationry
- 63.5mm
Torsion and stability
- Torsional constantJ
- 5,16010³ mm⁴
- Warping constantCw
- 24,20010⁹ mm⁶
- Effective radius of gyrationrts
- 78.5mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.88
- Web slendernessh/tw
- 49.9