IR – wide flange (ASTM A6 W)

IR 310x415

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 = 333d = 404tf = 62.7tf = 62.7tw = 38.9tw = 38.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
404mm
Flange widthbf
333mm
Web thicknesstw
38.9mm
Flange thicknesstf
62.7mm
Distance k (design)kdes
78mm
Distance k (detailing)kdet
85.7mm
Distance k1k1
41.3mm
Web clear depthT
232mm
Distance between flange centroidsho
340mm

Mass and area

Mass per lengthm
415kg/m
Cross-sectional areaA
52,800mm²

Strong axis x–x

Moment of inertiaIx
1,29010⁶ mm⁴
Elastic section modulusSx
6,44010³ mm³
Plastic section modulusZx
7,88010³ mm³
Radius of gyrationrx
156mm

Weak axis y–y

Moment of inertiaIy
39010⁶ mm⁴
Elastic section modulusSy
2,34010³ mm³
Plastic section modulusZy
3,61010³ mm³
Radius of gyrationry
85.9mm

Torsion and stability

Torsional constantJ
59,50010³ mm⁴
Warping constantCw
11,30010⁹ mm⁶
Effective radius of gyrationrts
102mm

Slenderness ratios

Flange slendernessbf/2tf
2.66
Web slendernessh/tw
6.35

Equivalents in other standards