IR – wide flange (ASTM A6 W)
IR 360x382
IR designation built from the metric W; cross-check with the IMCA Manual.
Dimensions
- Depthd
- 417mm
- Flange widthbf
- 406mm
- Web thicknesstw
- 30mm
- Flange thicknesstf
- 48mm
- Distance k (design)kdes
- 63.2mm
- Distance k (detailing)kdet
- 81mm
- Distance k1k1
- 46mm
- Web clear depthT
- 254mm
- Distance between flange centroidsho
- 368mm
Mass and area
- Mass per lengthm
- 382kg/m
- Cross-sectional areaA
- 48,800mm²
Strong axis x–x
- Moment of inertiaIx
- 1,42010⁶ mm⁴
- Elastic section modulusSx
- 6,80010³ mm³
- Plastic section modulusZx
- 7,98010³ mm³
- Radius of gyrationrx
- 170mm
Weak axis y–y
- Moment of inertiaIy
- 53710⁶ mm⁴
- Elastic section modulusSy
- 2,64010³ mm³
- Plastic section modulusZy
- 4,03010³ mm³
- Radius of gyrationry
- 105mm
Torsion and stability
- Torsional constantJ
- 32,90010³ mm⁴
- Warping constantCw
- 18,20010⁹ mm⁶
- Effective radius of gyrationrts
- 121mm
Slenderness ratios
- Flange slendernessbf/2tf
- 4.23
- Web slendernessh/tw
- 9.71