IR – wide flange (ASTM A6 W)

IR 360x314

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 = 401d = 399tf = 39.6tf = 39.6tw = 24.9tw = 24.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
399mm
Flange widthbf
401mm
Web thicknesstw
24.9mm
Flange thicknesstf
39.6mm
Distance k (design)kdes
54.9mm
Distance k (detailing)kdet
73mm
Distance k1k1
42.9mm
Web clear depthT
254mm
Distance between flange centroidsho
358mm

Mass and area

Mass per lengthm
314kg/m
Cross-sectional areaA
40,000mm²

Strong axis x–x

Moment of inertiaIx
1,11010⁶ mm⁴
Elastic section modulusSx
5,54010³ mm³
Plastic section modulusZx
6,39010³ mm³
Radius of gyrationrx
166mm

Weak axis y–y

Moment of inertiaIy
42910⁶ mm⁴
Elastic section modulusSy
2,13010³ mm³
Plastic section modulusZy
3,24010³ mm³
Radius of gyrationry
103mm

Torsion and stability

Torsional constantJ
18,60010³ mm⁴
Warping constantCw
13,80010⁹ mm⁶
Effective radius of gyrationrts
118mm

Slenderness ratios

Flange slendernessbf/2tf
5.06
Web slendernessh/tw
11.6

Equivalents in other standards