IR – wide flange (ASTM A6 W)

IR 1100x390

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 = 1,100tf = 36.1tf = 36.1tw = 19.9tw = 19.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,100mm
Flange widthbf
401mm
Web thicknesstw
19.9mm
Flange thicknesstf
36.1mm
Distance k (design)kdes
55.9mm
Distance k (detailing)kdet
66.7mm
Distance k1k1
41.3mm
Web clear depthT
965mm
Distance between flange centroidsho
1,060mm

Mass and area

Mass per lengthm
390kg/m
Cross-sectional areaA
49,800mm²

Strong axis x–x

Moment of inertiaIx
10,00010⁶ mm⁴
Elastic section modulusSx
18,20010³ mm³
Plastic section modulusZx
20,80010³ mm³
Radius of gyrationrx
450mm

Weak axis y–y

Moment of inertiaIy
38410⁶ mm⁴
Elastic section modulusSy
1,92010³ mm³
Plastic section modulusZy
2,98010³ mm³
Radius of gyrationry
88.1mm

Torsion and stability

Torsional constantJ
15,50010³ mm⁴
Warping constantCw
109,00010⁹ mm⁶
Effective radius of gyrationrts
106mm

Slenderness ratios

Flange slendernessbf/2tf
5.57
Web slendernessh/tw
49.6

Equivalents in other standards