IR – wide flange (ASTM A6 W)

IR 1000x494

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 = 310d = 1,040tf = 54.1tf = 54.1tw = 31tw = 31
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,040mm
Flange widthbf
310mm
Web thicknesstw
31mm
Flange thicknesstf
54.1mm
Distance k (design)kdes
84.1mm
Distance k (detailing)kdet
85.7mm
Distance k1k1
46mm
Web clear depthT
864mm
Distance between flange centroidsho
983mm

Mass and area

Mass per lengthm
494kg/m
Cross-sectional areaA
63,000mm²

Strong axis x–x

Moment of inertiaIx
10,30010⁶ mm⁴
Elastic section modulusSx
19,80010³ mm³
Plastic section modulusZx
23,40010³ mm³
Radius of gyrationrx
404mm

Weak axis y–y

Moment of inertiaIy
26810⁶ mm⁴
Elastic section modulusSy
1,74010³ mm³
Plastic section modulusZy
2,82010³ mm³
Radius of gyrationry
65.3mm

Torsion and stability

Torsional constantJ
43,70010³ mm⁴
Warping constantCw
64,70010⁹ mm⁶
Effective radius of gyrationrts
81.5mm

Slenderness ratios

Flange slendernessbf/2tf
2.86
Web slendernessh/tw
28

Equivalents in other standards