IR – wide flange (ASTM A6 W)
IR 920x313
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 932mm
- Flange widthbf
- 310mm
- Web thicknesstw
- 21.1mm
- Flange thicknesstf
- 34.5mm
- Distance k (design)kdes
- 53.6mm
- Distance k (detailing)kdet
- 66.7mm
- Distance k1k1
- 41.3mm
- Web clear depthT
- 800mm
- Distance between flange centroidsho
- 897mm
Mass and area
- Mass per lengthm
- 313kg/m
- Cross-sectional areaA
- 39,900mm²
Strong axis x–x
- Moment of inertiaIx
- 5,49010⁶ mm⁴
- Elastic section modulusSx
- 11,80010³ mm³
- Plastic section modulusZx
- 13,70010³ mm³
- Radius of gyrationrx
- 371mm
Weak axis y–y
- Moment of inertiaIy
- 17110⁶ mm⁴
- Elastic section modulusSy
- 1,11010³ mm³
- Plastic section modulusZy
- 1,75010³ mm³
- Radius of gyrationry
- 65.5mm
Torsion and stability
- Torsional constantJ
- 11,70010³ mm⁴
- Warping constantCw
- 34,40010⁹ mm⁶
- Effective radius of gyrationrts
- 80.8mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.48
- Web slendernessh/tw
- 39.1