IR – wide flange (ASTM A6 W)

IR 360x347

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 = 404d = 406tf = 43.7tf = 43.7tw = 27.2tw = 27.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
406mm
Flange widthbf
404mm
Web thicknesstw
27.2mm
Flange thicknesstf
43.7mm
Distance k (design)kdes
58.9mm
Distance k (detailing)kdet
76.2mm
Distance k1k1
44.5mm
Web clear depthT
254mm
Distance between flange centroidsho
363mm

Mass and area

Mass per lengthm
347kg/m
Cross-sectional areaA
44,200mm²

Strong axis x–x

Moment of inertiaIx
1,25010⁶ mm⁴
Elastic section modulusSx
6,15010³ mm³
Plastic section modulusZx
7,14010³ mm³
Radius of gyrationrx
168mm

Weak axis y–y

Moment of inertiaIy
47910⁶ mm⁴
Elastic section modulusSy
2,38010³ mm³
Plastic section modulusZy
3,62010³ mm³
Radius of gyrationry
104mm

Torsion and stability

Torsional constantJ
24,80010³ mm⁴
Warping constantCw
15,80010⁹ mm⁶
Effective radius of gyrationrts
119mm

Slenderness ratios

Flange slendernessbf/2tf
4.62
Web slendernessh/tw
10.7

Equivalents in other standards