IR – wide flange (ASTM A6 W)

IR 1100x343

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 = 1,090tf = 31tf = 31tw = 18tw = 18
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,090mm
Flange widthbf
401mm
Web thicknesstw
18mm
Flange thicknesstf
31mm
Distance k (design)kdes
51.1mm
Distance k (detailing)kdet
61.9mm
Distance k1k1
39.7mm
Web clear depthT
965mm
Distance between flange centroidsho
1,060mm

Mass and area

Mass per lengthm
343kg/m
Cross-sectional areaA
43,700mm²

Strong axis x–x

Moment of inertiaIx
8,66010⁶ mm⁴
Elastic section modulusSx
15,90010³ mm³
Plastic section modulusZx
18,00010³ mm³
Radius of gyrationrx
445mm

Weak axis y–y

Moment of inertiaIy
33110⁶ mm⁴
Elastic section modulusSy
1,66010³ mm³
Plastic section modulusZy
2,57010³ mm³
Radius of gyrationry
87.1mm

Torsion and stability

Torsional constantJ
10,40010³ mm⁴
Warping constantCw
92,90010⁹ mm⁶
Effective radius of gyrationrts
105mm

Slenderness ratios

Flange slendernessbf/2tf
6.45
Web slendernessh/tw
54.8

Equivalents in other standards