IR – wide flange (ASTM A6 W)

IR 310x32.7

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 = 102d = 312tf = 10.8tf = 10.8tw = 6.6tw = 6.6
Cross-section, to scaledimensions in mm

Dimensions

Depthd
312mm
Flange widthbf
102mm
Web thicknesstw
6.6mm
Flange thicknesstf
10.8mm
Distance k (design)kdes
18.4mm
Distance k (detailing)kdet
23.8mm
Distance k1k1
15.9mm
Web clear depthT
264mm
Distance between flange centroidsho
302mm

Mass and area

Mass per lengthm
32.7kg/m
Cross-sectional areaA
4,180mm²

Strong axis x–x

Moment of inertiaIx
64.910⁶ mm⁴
Elastic section modulusSx
41610³ mm³
Plastic section modulusZx
48010³ mm³
Radius of gyrationrx
125mm

Weak axis y–y

Moment of inertiaIy
1.9410⁶ mm⁴
Elastic section modulusSy
37.910³ mm³
Plastic section modulusZy
6010³ mm³
Radius of gyrationry
21.5mm

Torsion and stability

Torsional constantJ
12210³ mm⁴
Warping constantCw
4410⁹ mm⁶
Effective radius of gyrationrts
26.4mm

Slenderness ratios

Flange slendernessbf/2tf
4.74
Web slendernessh/tw
41.8

Equivalents in other standards