IR – wide flange (ASTM A6 W)

IR 690x140

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 = 254d = 683tf = 18.9tf = 18.9tw = 12.4tw = 12.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
683mm
Flange widthbf
254mm
Web thicknesstw
12.4mm
Flange thicknesstf
18.9mm
Distance k (design)kdes
34mm
Distance k (detailing)kdet
49.2mm
Distance k1k1
36.5mm
Web clear depthT
584mm
Distance between flange centroidsho
665mm

Mass and area

Mass per lengthm
140kg/m
Cross-sectional areaA
17,800mm²

Strong axis x–x

Moment of inertiaIx
1,36010⁶ mm⁴
Elastic section modulusSx
3,98010³ mm³
Plastic section modulusZx
4,56010³ mm³
Radius of gyrationrx
277mm

Weak axis y–y

Moment of inertiaIy
51.610⁶ mm⁴
Elastic section modulusSy
40610³ mm³
Plastic section modulusZy
63610³ mm³
Radius of gyrationry
53.8mm

Torsion and stability

Torsional constantJ
1,68010³ mm⁴
Warping constantCw
5,72010⁹ mm⁶
Effective radius of gyrationrts
65.8mm

Slenderness ratios

Flange slendernessbf/2tf
6.7
Web slendernessh/tw
49.5

Equivalents in other standards