IR – wide flange (ASTM A6 W)

IR 1100x548

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 = 406d = 1,130tf = 50tf = 50tw = 27.9tw = 27.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,130mm
Flange widthbf
406mm
Web thicknesstw
27.9mm
Flange thicknesstf
50mm
Distance k (design)kdes
70.1mm
Distance k (detailing)kdet
81mm
Distance k1k1
44.5mm
Web clear depthT
965mm
Distance between flange centroidsho
1,080mm

Mass and area

Mass per lengthm
548kg/m
Cross-sectional areaA
69,700mm²

Strong axis x–x

Moment of inertiaIx
14,40010⁶ mm⁴
Elastic section modulusSx
25,60010³ mm³
Plastic section modulusZx
29,50010³ mm³
Radius of gyrationrx
455mm

Weak axis y–y

Moment of inertiaIy
56210⁶ mm⁴
Elastic section modulusSy
2,77010³ mm³
Plastic section modulusZy
4,34010³ mm³
Radius of gyrationry
89.9mm

Torsion and stability

Torsional constantJ
41,60010³ mm⁴
Warping constantCw
163,00010⁹ mm⁶
Effective radius of gyrationrts
109mm

Slenderness ratios

Flange slendernessbf/2tf
4.06
Web slendernessh/tw
35.4

Equivalents in other standards