IR – wide flange (ASTM A6 W)

IR 760x284

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 = 381d = 780tf = 30.2tf = 30.2tw = 18tw = 18
Cross-section, to scaledimensions in mm

Dimensions

Depthd
780mm
Flange widthbf
381mm
Web thicknesstw
18mm
Flange thicknesstf
30.2mm
Distance k (design)kdes
50mm
Distance k (detailing)kdet
63.5mm
Distance k1k1
39.7mm
Web clear depthT
654mm
Distance between flange centroidsho
749mm

Mass and area

Mass per lengthm
284kg/m
Cross-sectional areaA
36,200mm²

Strong axis x–x

Moment of inertiaIx
3,83010⁶ mm⁴
Elastic section modulusSx
9,83010³ mm³
Plastic section modulusZx
11,10010³ mm³
Radius of gyrationrx
325mm

Weak axis y–y

Moment of inertiaIy
28010⁶ mm⁴
Elastic section modulusSy
1,47010³ mm³
Plastic section modulusZy
2,26010³ mm³
Radius of gyrationry
87.9mm

Torsion and stability

Torsional constantJ
8,74010³ mm⁴
Warping constantCw
39,20010⁹ mm⁶
Effective radius of gyrationrts
103mm

Slenderness ratios

Flange slendernessbf/2tf
6.35
Web slendernessh/tw
37.7

Equivalents in other standards