IR – wide flange (ASTM A6 W)

IR 920x1077

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 = 452d = 1,060tf = 99.1tf = 99.1tw = 55.1tw = 55.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
1,060mm
Flange widthbf
452mm
Web thicknesstw
55.1mm
Flange thicknesstf
99.1mm
Distance k (design)kdes
118mm
Distance k (detailing)kdet
119mm
Distance k1k1
47.6mm
Web clear depthT
822mm
Distance between flange centroidsho
963mm

Mass and area

Mass per lengthm
1,080kg/m
Cross-sectional areaA
137,000mm²

Strong axis x–x

Moment of inertiaIx
23,80010⁶ mm⁴
Elastic section modulusSx
44,90010³ mm³
Plastic section modulusZx
53,60010³ mm³
Radius of gyrationrx
417mm

Weak axis y–y

Moment of inertiaIy
1,54010⁶ mm⁴
Elastic section modulusSy
6,82010³ mm³
Plastic section modulusZy
10,80010³ mm³
Radius of gyrationry
106mm

Torsion and stability

Torsional constantJ
327,00010³ mm⁴
Warping constantCw
357,00010⁹ mm⁶
Effective radius of gyrationrts
129mm

Slenderness ratios

Flange slendernessbf/2tf
2.28
Web slendernessh/tw
15

Equivalents in other standards