IR – wide flange (ASTM A6 W)

IR 250x67

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 = 204d = 257tf = 15.7tf = 15.7tw = 8.89tw = 8.89
Cross-section, to scaledimensions in mm

Dimensions

Depthd
257mm
Flange widthbf
204mm
Web thicknesstw
8.89mm
Flange thicknesstf
15.7mm
Distance k (design)kdes
28.4mm
Distance k (detailing)kdet
33.3mm
Distance k1k1
20.6mm
Web clear depthT
191mm
Distance between flange centroidsho
241mm

Mass and area

Mass per lengthm
67kg/m
Cross-sectional areaA
8,580mm²

Strong axis x–x

Moment of inertiaIx
10310⁶ mm⁴
Elastic section modulusSx
80510³ mm³
Plastic section modulusZx
90010³ mm³
Radius of gyrationrx
110mm

Weak axis y–y

Moment of inertiaIy
22.210⁶ mm⁴
Elastic section modulusSy
21810³ mm³
Plastic section modulusZy
33310³ mm³
Radius of gyrationry
51.1mm

Torsion and stability

Torsional constantJ
62910³ mm⁴
Warping constantCw
32210⁹ mm⁶
Effective radius of gyrationrts
57.7mm

Slenderness ratios

Flange slendernessbf/2tf
6.47
Web slendernessh/tw
22.5

Equivalents in other standards