W – wide flange

W310x253

Standard: ASTM A6/A6M (désignations métriques)Source: SI values from the AISC v16.0 database (ASTM A6 shapes common to Canada)
ASTM A6 rolled shapes are the same in Canada; the CISC list may differ slightly (availability).
xybf = 320d = 356tf = 39.6tf = 39.6tw = 24.4tw = 24.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
356mm
Flange widthbf
320mm
Web thicknesstw
24.4mm
Flange thicknesstf
39.6mm
Distance k (design)kdes
54.9mm
Distance k (detailing)kdet
61.9mm
Distance k1k1
33.3mm
Web clear depthT
232mm
Distance between flange centroidsho
315mm

Mass and area

Mass per lengthm
253kg/m
Cross-sectional areaA
32,300mm²

Strong axis x–x

Moment of inertiaIx
68710⁶ mm⁴
Elastic section modulusSx
3,85010³ mm³
Plastic section modulusZx
4,51010³ mm³
Radius of gyrationrx
146mm

Weak axis y–y

Moment of inertiaIy
21510⁶ mm⁴
Elastic section modulusSy
1,35010³ mm³
Plastic section modulusZy
2,06010³ mm³
Radius of gyrationry
81.8mm

Torsion and stability

Torsional constantJ
14,80010³ mm⁴
Warping constantCw
5,40010⁹ mm⁶
Effective radius of gyrationrts
94mm

Slenderness ratios

Flange slendernessbf/2tf
4.03
Web slendernessh/tw
10.1

Equivalents in other standards