IR – wide flange (ASTM A6 W)

IR 310x179

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 = 312d = 333tf = 28.2tf = 28.2tw = 18tw = 18
Cross-section, to scaledimensions in mm

Dimensions

Depthd
333mm
Flange widthbf
312mm
Web thicknesstw
18mm
Flange thicknesstf
28.2mm
Distance k (design)kdes
43.2mm
Distance k (detailing)kdet
50.8mm
Distance k1k1
30.2mm
Web clear depthT
232mm
Distance between flange centroidsho
305mm

Mass and area

Mass per lengthm
179kg/m
Cross-sectional areaA
22,700mm²

Strong axis x–x

Moment of inertiaIx
44510⁶ mm⁴
Elastic section modulusSx
2,67010³ mm³
Plastic section modulusZx
3,05010³ mm³
Radius of gyrationrx
140mm

Weak axis y–y

Moment of inertiaIy
14410⁶ mm⁴
Elastic section modulusSy
91810³ mm³
Plastic section modulusZy
1,40010³ mm³
Radius of gyrationry
79.5mm

Torsion and stability

Torsional constantJ
5,37010³ mm⁴
Warping constantCw
3,33010⁹ mm⁶
Effective radius of gyrationrts
90.4mm

Slenderness ratios

Flange slendernessbf/2tf
5.57
Web slendernessh/tw
13.7

Equivalents in other standards