IR – wide flange (ASTM A6 W)

IR 920x1194

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 = 457d = 1,080tf = 109tf = 109tw = 60.5tw = 60.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,080mm
Flange widthbf
457mm
Web thicknesstw
60.5mm
Flange thicknesstf
109mm
Distance k (design)kdes
128mm
Distance k (detailing)kdet
130mm
Distance k1k1
50.8mm
Web clear depthT
822mm
Distance between flange centroidsho
973mm

Mass and area

Mass per lengthm
1,190kg/m
Cross-sectional areaA
152,000mm²

Strong axis x–x

Moment of inertiaIx
27,00010⁶ mm⁴
Elastic section modulusSx
49,80010³ mm³
Plastic section modulusZx
60,00010³ mm³
Radius of gyrationrx
422mm

Weak axis y–y

Moment of inertiaIy
1,75010⁶ mm⁴
Elastic section modulusSy
7,67010³ mm³
Plastic section modulusZy
12,20010³ mm³
Radius of gyrationry
107mm

Torsion and stability

Torsional constantJ
437,00010³ mm⁴
Warping constantCw
414,00010⁹ mm⁶
Effective radius of gyrationrts
131mm

Slenderness ratios

Flange slendernessbf/2tf
2.1
Web slendernessh/tw
13.7

Equivalents in other standards