IR – wide flange (ASTM A6 W)

IR 250x115

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 = 259d = 269tf = 22.1tf = 22.1tw = 13.5tw = 13.5
Cross-section, to scaledimensions in mm

Dimensions

Depthd
269mm
Flange widthbf
259mm
Web thicknesstw
13.5mm
Flange thicknesstf
22.1mm
Distance k (design)kdes
34.8mm
Distance k (detailing)kdet
39.7mm
Distance k1k1
22.2mm
Web clear depthT
191mm
Distance between flange centroidsho
247mm

Mass and area

Mass per lengthm
115kg/m
Cross-sectional areaA
14,600mm²

Strong axis x–x

Moment of inertiaIx
18910⁶ mm⁴
Elastic section modulusSx
1,41010³ mm³
Plastic section modulusZx
1,60010³ mm³
Radius of gyrationrx
114mm

Weak axis y–y

Moment of inertiaIy
64.110⁶ mm⁴
Elastic section modulusSy
49310³ mm³
Plastic section modulusZy
75210³ mm³
Radius of gyrationry
66mm

Torsion and stability

Torsional constantJ
2,13010³ mm⁴
Warping constantCw
97510⁹ mm⁶
Effective radius of gyrationrts
74.9mm

Slenderness ratios

Flange slendernessbf/2tf
5.86
Web slendernessh/tw
14.8

Equivalents in other standards