W – wide flange

W310x38.7

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 = 165d = 310tf = 9.65tf = 9.65tw = 5.84tw = 5.84
Cross-section, to scaledimensions in mm

Dimensions

Depthd
310mm
Flange widthbf
165mm
Web thicknesstw
5.84mm
Flange thicknesstf
9.65mm
Distance k (design)kdes
17.3mm
Distance k (detailing)kdet
27mm
Distance k1k1
19.1mm
Web clear depthT
257mm
Distance between flange centroidsho
300mm

Mass and area

Mass per lengthm
38.7kg/m
Cross-sectional areaA
4,940mm²

Strong axis x–x

Moment of inertiaIx
84.910⁶ mm⁴
Elastic section modulusSx
54710³ mm³
Plastic section modulusZx
61010³ mm³
Radius of gyrationrx
131mm

Weak axis y–y

Moment of inertiaIy
7.210⁶ mm⁴
Elastic section modulusSy
87.510³ mm³
Plastic section modulusZy
13410³ mm³
Radius of gyrationry
38.4mm

Torsion and stability

Torsional constantJ
12510³ mm⁴
Warping constantCw
16310⁹ mm⁶
Effective radius of gyrationrts
44.4mm

Slenderness ratios

Flange slendernessbf/2tf
8.54
Web slendernessh/tw
47.2

Equivalents in other standards