IR – wide flange (ASTM A6 W)

IR 920x271

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 = 307d = 922tf = 30tf = 30tw = 18.4tw = 18.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
922mm
Flange widthbf
307mm
Web thicknesstw
18.4mm
Flange thicknesstf
30mm
Distance k (design)kdes
49mm
Distance k (detailing)kdet
60.3mm
Distance k1k1
39.7mm
Web clear depthT
800mm
Distance between flange centroidsho
892mm

Mass and area

Mass per lengthm
271kg/m
Cross-sectional areaA
34,600mm²

Strong axis x–x

Moment of inertiaIx
4,70010⁶ mm⁴
Elastic section modulusSx
10,20010³ mm³
Plastic section modulusZx
11,80010³ mm³
Radius of gyrationrx
368mm

Weak axis y–y

Moment of inertiaIy
14410⁶ mm⁴
Elastic section modulusSy
94410³ mm³
Plastic section modulusZy
1,49010³ mm³
Radius of gyrationry
64.8mm

Torsion and stability

Torsional constantJ
7,70010³ mm⁴
Warping constantCw
28,70010⁹ mm⁶
Effective radius of gyrationrts
79.5mm

Slenderness ratios

Flange slendernessbf/2tf
5.12
Web slendernessh/tw
44.8

Equivalents in other standards