IR – wide flange (ASTM A6 W)

IR 310x342

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 = 328d = 384tf = 52.6tf = 52.6tw = 32.8tw = 32.8
Cross-section, to scaledimensions in mm

Dimensions

Depthd
384mm
Flange widthbf
328mm
Web thicknesstw
32.8mm
Flange thicknesstf
52.6mm
Distance k (design)kdes
67.8mm
Distance k (detailing)kdet
74.6mm
Distance k1k1
38.1mm
Web clear depthT
232mm
Distance between flange centroidsho
330mm

Mass and area

Mass per lengthm
342kg/m
Cross-sectional areaA
43,700mm²

Strong axis x–x

Moment of inertiaIx
1,01010⁶ mm⁴
Elastic section modulusSx
5,26010³ mm³
Plastic section modulusZx
6,33010³ mm³
Radius of gyrationrx
152mm

Weak axis y–y

Moment of inertiaIy
30910⁶ mm⁴
Elastic section modulusSy
1,88010³ mm³
Plastic section modulusZy
2,90010³ mm³
Radius of gyrationry
84.1mm

Torsion and stability

Torsional constantJ
34,90010³ mm⁴
Warping constantCw
8,38010⁹ mm⁶
Effective radius of gyrationrts
98.3mm

Slenderness ratios

Flange slendernessbf/2tf
3.11
Web slendernessh/tw
7.56

Equivalents in other standards