IR – wide flange (ASTM A6 W)

IR 310x158

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 = 310d = 328tf = 25.1tf = 25.1tw = 15.5tw = 15.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
328mm
Flange widthbf
310mm
Web thicknesstw
15.5mm
Flange thicknesstf
25.1mm
Distance k (design)kdes
40.4mm
Distance k (detailing)kdet
47.6mm
Distance k1k1
28.6mm
Web clear depthT
232mm
Distance between flange centroidsho
302mm

Mass and area

Mass per lengthm
158kg/m
Cross-sectional areaA
20,100mm²

Strong axis x–x

Moment of inertiaIx
38810⁶ mm⁴
Elastic section modulusSx
2,38010³ mm³
Plastic section modulusZx
2,69010³ mm³
Radius of gyrationrx
139mm

Weak axis y–y

Moment of inertiaIy
12510⁶ mm⁴
Elastic section modulusSy
80810³ mm³
Plastic section modulusZy
1,23010³ mm³
Radius of gyrationry
79mm

Torsion and stability

Torsional constantJ
3,80010³ mm⁴
Warping constantCw
2,87010⁹ mm⁶
Effective radius of gyrationrts
89.4mm

Slenderness ratios

Flange slendernessbf/2tf
6.17
Web slendernessh/tw
15.9

Equivalents in other standards