IR – wide flange (ASTM A6 W)
IR 360x39
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 353mm
- Flange widthbf
- 128mm
- Web thicknesstw
- 6.48mm
- Flange thicknesstf
- 10.7mm
- Distance k (design)kdes
- 20.8mm
- Distance k (detailing)kdet
- 28.6mm
- Distance k1k1
- 19.1mm
- Web clear depthT
- 295mm
- Distance between flange centroidsho
- 343mm
Mass and area
- Mass per lengthm
- 39kg/m
- Cross-sectional areaA
- 4,960mm²
Strong axis x–x
- Moment of inertiaIx
- 10210⁶ mm⁴
- Elastic section modulusSx
- 57810³ mm³
- Plastic section modulusZx
- 65910³ mm³
- Radius of gyrationrx
- 144mm
Weak axis y–y
- Moment of inertiaIy
- 3.7110⁶ mm⁴
- Elastic section modulusSy
- 58.210³ mm³
- Plastic section modulusZy
- 90.810³ mm³
- Radius of gyrationry
- 27.4mm
Torsion and stability
- Torsional constantJ
- 14910³ mm⁴
- Warping constantCw
- 10910⁹ mm⁶
- Effective radius of gyrationrts
- 33mm
Slenderness ratios
- Flange slendernessbf/2tf
- 5.98
- Web slendernessh/tw
- 48.1