IR – wide flange (ASTM A6 W)
IR 1000x321
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 991mm
- Flange widthbf
- 401mm
- Web thicknesstw
- 16.5mm
- Flange thicknesstf
- 31mm
- Distance k (design)kdes
- 61mm
- Distance k (detailing)kdet
- 63.5mm
- Distance k1k1
- 39.7mm
- Web clear depthT
- 864mm
- Distance between flange centroidsho
- 960mm
Mass and area
- Mass per lengthm
- 321kg/m
- Cross-sectional areaA
- 41,000mm²
Strong axis x–x
- Moment of inertiaIx
- 6,95010⁶ mm⁴
- Elastic section modulusSx
- 14,10010³ mm³
- Plastic section modulusZx
- 15,80010³ mm³
- Radius of gyrationrx
- 411mm
Weak axis y–y
- Moment of inertiaIy
- 33410⁶ mm⁴
- Elastic section modulusSy
- 1,66010³ mm³
- Plastic section modulusZy
- 2,56010³ mm³
- Radius of gyrationry
- 89.9mm
Torsion and stability
- Torsional constantJ
- 10,30010³ mm⁴
- Warping constantCw
- 76,30010⁹ mm⁶
- Effective radius of gyrationrts
- 106mm
Slenderness ratios
- Flange slendernessbf/2tf
- 6.45
- Web slendernessh/tw
- 52.6