IR – wide flange (ASTM A6 W)
IR 920x1269
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 1,090mm
- Flange widthbf
- 462mm
- Web thicknesstw
- 64mm
- Flange thicknesstf
- 115mm
- Distance k (design)kdes
- 134mm
- Distance k (detailing)kdet
- 137mm
- Distance k1k1
- 52.4mm
- Web clear depthT
- 822mm
- Distance between flange centroidsho
- 980mm
Mass and area
- Mass per lengthm
- 1,270kg/m
- Cross-sectional areaA
- 162,000mm²
Strong axis x–x
- Moment of inertiaIx
- 29,10010⁶ mm⁴
- Elastic section modulusSx
- 53,30010³ mm³
- Plastic section modulusZx
- 64,20010³ mm³
- Radius of gyrationrx
- 424mm
Weak axis y–y
- Moment of inertiaIy
- 1,91010⁶ mm⁴
- Elastic section modulusSy
- 8,28010³ mm³
- Plastic section modulusZy
- 13,20010³ mm³
- Radius of gyrationry
- 109mm
Torsion and stability
- Torsional constantJ
- 516,00010³ mm⁴
- Warping constantCw
- 459,00010⁹ mm⁶
- Effective radius of gyrationrts
- 133mm
Slenderness ratios
- Flange slendernessbf/2tf
- 2.01
- Web slendernessh/tw
- 12.9