IR – wide flange (ASTM A6 W)

IR 920x521

Standard: ASTM A6 / IMCASource: SI values from the AISC v16.0 database
IR designation built from the metric W; cross-check with the IMCA Manual.
xybf = 320d = 980tf = 58.9tf = 58.9tw = 33tw = 33
Cross-section, to scaledimensions in mm

Dimensions

Depthd
980mm
Flange widthbf
320mm
Web thicknesstw
33mm
Flange thicknesstf
58.9mm
Distance k (design)kdes
78mm
Distance k (detailing)kdet
90.5mm
Distance k1k1
47.6mm
Web clear depthT
800mm
Distance between flange centroidsho
922mm

Mass and area

Mass per lengthm
521kg/m
Cross-sectional areaA
66,500mm²

Strong axis x–x

Moment of inertiaIx
9,82010⁶ mm⁴
Elastic section modulusSx
20,00010³ mm³
Plastic section modulusZx
23,60010³ mm³
Radius of gyrationrx
384mm

Weak axis y–y

Moment of inertiaIy
32510⁶ mm⁴
Elastic section modulusSy
2,03010³ mm³
Plastic section modulusZy
3,26010³ mm³
Radius of gyrationry
69.9mm

Torsion and stability

Torsional constantJ
53,70010³ mm⁴
Warping constantCw
69,00010⁹ mm⁶
Effective radius of gyrationrts
86.6mm

Slenderness ratios

Flange slendernessbf/2tf
2.72
Web slendernessh/tw
25

Equivalents in other standards