IR – wide flange (ASTM A6 W)

IR 360x900

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 = 442d = 531tf = 106tf = 106tw = 66tw = 66
Cross-section, to scaledimensions in mm

Dimensions

Depthd
531mm
Flange widthbf
442mm
Web thicknesstw
66mm
Flange thicknesstf
106mm
Distance k (design)kdes
121mm
Distance k (detailing)kdet
138mm
Distance k1k1
63.5mm
Web clear depthT
254mm
Distance between flange centroidsho
424mm

Mass and area

Mass per lengthm
900kg/m
Cross-sectional areaA
115,000mm²

Strong axis x–x

Moment of inertiaIx
4,50010⁶ mm⁴
Elastic section modulusSx
17,00010³ mm³
Plastic section modulusZx
21,60010³ mm³
Radius of gyrationrx
198mm

Weak axis y–y

Moment of inertiaIy
1,53010⁶ mm⁴
Elastic section modulusSy
6,93010³ mm³
Plastic section modulusZy
10,70010³ mm³
Radius of gyrationry
116mm

Torsion and stability

Torsional constantJ
362,00010³ mm⁴
Warping constantCw
69,30010⁹ mm⁶
Effective radius of gyrationrts
138mm

Slenderness ratios

Flange slendernessbf/2tf
2.09
Web slendernessh/tw
4.39

Equivalents in other standards