IR – wide flange (ASTM A6 W)

IR 360x147

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 = 371d = 361tf = 19.8tf = 19.8tw = 12.3tw = 12.3
Cross-section, to scaledimensions in mm

Dimensions

Depthd
361mm
Flange widthbf
371mm
Web thicknesstw
12.3mm
Flange thicknesstf
19.8mm
Distance k (design)kdes
35.1mm
Distance k (detailing)kdet
52.4mm
Distance k1k1
36.5mm
Web clear depthT
254mm
Distance between flange centroidsho
340mm

Mass and area

Mass per lengthm
147kg/m
Cross-sectional areaA
18,800mm²

Strong axis x–x

Moment of inertiaIx
46210⁶ mm⁴
Elastic section modulusSx
2,57010³ mm³
Plastic section modulusZx
2,83010³ mm³
Radius of gyrationrx
157mm

Weak axis y–y

Moment of inertiaIy
16710⁶ mm⁴
Elastic section modulusSy
90510³ mm³
Plastic section modulusZy
1,37010³ mm³
Radius of gyrationry
94.2mm

Torsion and stability

Torsional constantJ
2,24010³ mm⁴
Warping constantCw
4,83010⁹ mm⁶
Effective radius of gyrationrts
105mm

Slenderness ratios

Flange slendernessbf/2tf
9.34
Web slendernessh/tw
23.5

Equivalents in other standards