IR – wide flange (ASTM A6 W)

IR 920x1377

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 = 472d = 1,090tf = 115tf = 115tw = 76.7tw = 76.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,090mm
Flange widthbf
472mm
Web thicknesstw
76.7mm
Flange thicknesstf
115mm
Distance k (design)kdes
134mm
Distance k (detailing)kdet
137mm
Distance k1k1
58.7mm
Web clear depthT
822mm
Distance between flange centroidsho
980mm

Mass and area

Mass per lengthm
1,380kg/m
Cross-sectional areaA
175,000mm²

Strong axis x–x

Moment of inertiaIx
30,40010⁶ mm⁴
Elastic section modulusSx
55,60010³ mm³
Plastic section modulusZx
67,70010³ mm³
Radius of gyrationrx
417mm

Weak axis y–y

Moment of inertiaIy
2,06010⁶ mm⁴
Elastic section modulusSy
8,70010³ mm³
Plastic section modulusZy
14,10010³ mm³
Radius of gyrationry
108mm

Torsion and stability

Torsional constantJ
595,00010³ mm⁴
Warping constantCw
494,00010⁹ mm⁶
Effective radius of gyrationrts
135mm

Slenderness ratios

Flange slendernessbf/2tf
2.05
Web slendernessh/tw
10.8

Equivalents in other standards