IR – wide flange (ASTM A6 W)

IR 690x125

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 = 678tf = 16.3tf = 16.3tw = 11.7tw = 11.7
Cross-section, to scaledimensions in mm

Dimensions

Depthd
678mm
Flange widthbf
254mm
Web thicknesstw
11.7mm
Flange thicknesstf
16.3mm
Distance k (design)kdes
31.5mm
Distance k (detailing)kdet
47.6mm
Distance k1k1
36.5mm
Web clear depthT
584mm
Distance between flange centroidsho
663mm

Mass and area

Mass per lengthm
125kg/m
Cross-sectional areaA
15,900mm²

Strong axis x–x

Moment of inertiaIx
1,19010⁶ mm⁴
Elastic section modulusSx
3,49010³ mm³
Plastic section modulusZx
4,00010³ mm³
Radius of gyrationrx
272mm

Weak axis y–y

Moment of inertiaIy
44.110⁶ mm⁴
Elastic section modulusSy
34710³ mm³
Plastic section modulusZy
54410³ mm³
Radius of gyrationry
52.6mm

Torsion and stability

Torsional constantJ
1,17010³ mm⁴
Warping constantCw
4,81010⁹ mm⁶
Effective radius of gyrationrts
64.5mm

Slenderness ratios

Flange slendernessbf/2tf
7.78
Web slendernessh/tw
52.7

Equivalents in other standards