IR – wide flange (ASTM A6 W)

IR 920x425

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 = 312d = 960tf = 49tf = 49tw = 26.9tw = 26.9
Cross-section, to scaledimensions in mm

Dimensions

Depthd
960mm
Flange widthbf
312mm
Web thicknesstw
26.9mm
Flange thicknesstf
49mm
Distance k (design)kdes
68.1mm
Distance k (detailing)kdet
79.4mm
Distance k1k1
44.5mm
Web clear depthT
800mm
Distance between flange centroidsho
912mm

Mass and area

Mass per lengthm
425kg/m
Cross-sectional areaA
54,100mm²

Strong axis x–x

Moment of inertiaIx
7,87010⁶ mm⁴
Elastic section modulusSx
16,40010³ mm³
Plastic section modulusZx
19,00010³ mm³
Radius of gyrationrx
381mm

Weak axis y–y

Moment of inertiaIy
25110⁶ mm⁴
Elastic section modulusSy
1,60010³ mm³
Plastic section modulusZy
2,56010³ mm³
Radius of gyrationry
68.1mm

Torsion and stability

Torsional constantJ
30,30010³ mm⁴
Warping constantCw
52,10010⁹ mm⁶
Effective radius of gyrationrts
83.6mm

Slenderness ratios

Flange slendernessbf/2tf
3.19
Web slendernessh/tw
30.6

Equivalents in other standards