IR – wide flange (ASTM A6 W)

IR 840x329

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 = 861tf = 32.5tf = 32.5tw = 19.7tw = 19.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
861mm
Flange widthbf
401mm
Web thicknesstw
19.7mm
Flange thicknesstf
32.5mm
Distance k (design)kdes
52.3mm
Distance k (detailing)kdet
63.5mm
Distance k1k1
41.3mm
Web clear depthT
733mm
Distance between flange centroidsho
828mm

Mass and area

Mass per lengthm
329kg/m
Cross-sectional areaA
42,100mm²

Strong axis x–x

Moment of inertiaIx
5,37010⁶ mm⁴
Elastic section modulusSx
12,40010³ mm³
Plastic section modulusZx
14,00010³ mm³
Radius of gyrationrx
358mm

Weak axis y–y

Moment of inertiaIy
35010⁶ mm⁴
Elastic section modulusSy
1,74010³ mm³
Plastic section modulusZy
2,69010³ mm³
Radius of gyrationry
91.2mm

Torsion and stability

Torsional constantJ
11,60010³ mm⁴
Warping constantCw
60,20010⁹ mm⁶
Effective radius of gyrationrts
108mm

Slenderness ratios

Flange slendernessbf/2tf
6.2
Web slendernessh/tw
38.5

Equivalents in other standards