IR – wide flange (ASTM A6 W)

IR 360x72

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 = 204d = 351tf = 15.1tf = 15.1tw = 8.64tw = 8.64
Cross-section, to scaledimensions in mm

Dimensions

Depthd
351mm
Flange widthbf
204mm
Web thicknesstw
8.64mm
Flange thicknesstf
15.1mm
Distance k (design)kdes
30.2mm
Distance k (detailing)kdet
36.5mm
Distance k1k1
25.4mm
Web clear depthT
276mm
Distance between flange centroidsho
335mm

Mass and area

Mass per lengthm
72kg/m
Cross-sectional areaA
9,100mm²

Strong axis x–x

Moment of inertiaIx
20110⁶ mm⁴
Elastic section modulusSx
1,15010³ mm³
Plastic section modulusZx
1,28010³ mm³
Radius of gyrationrx
149mm

Weak axis y–y

Moment of inertiaIy
21.410⁶ mm⁴
Elastic section modulusSy
21010³ mm³
Plastic section modulusZy
32110³ mm³
Radius of gyrationry
48.5mm

Torsion and stability

Torsional constantJ
60410³ mm⁴
Warping constantCw
60210⁹ mm⁶
Effective radius of gyrationrts
55.9mm

Slenderness ratios

Flange slendernessbf/2tf
6.75
Web slendernessh/tw
33.6

Equivalents in other standards