M – miscellaneous shapes

M310x16.1

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 = 78d = 305tf = 5.33tf = 5.33tw = 4.06tw = 4.06
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Flange widthbf
78mm
Web thicknesstw
4.06mm
Flange thicknesstf
5.33mm
Distance k (design)kdes
14.3mm
Distance k (detailing)kdet
14.3mm
Distance k1k1
9.53mm
Web clear depthT
276mm
Distance between flange centroidsho
300mm

Mass and area

Mass per lengthm
16.1kg/m
Cross-sectional areaA
2,050mm²

Strong axis x–x

Moment of inertiaIx
27.810⁶ mm⁴
Elastic section modulusSx
18210³ mm³
Plastic section modulusZx
21610³ mm³
Radius of gyrationrx
116mm

Weak axis y–y

Moment of inertiaIy
0.4210⁶ mm⁴
Elastic section modulusSy
10.810³ mm³
Plastic section modulusZy
17.510³ mm³
Radius of gyrationry
14.3mm

Torsion and stability

Torsional constantJ
16.410³ mm⁴
Warping constantCw
9.410⁹ mm⁶
Effective radius of gyrationrts
18.6mm

Slenderness ratios

Flange slendernessbf/2tf
7.3
Web slendernessh/tw
69.2

Equivalents in other standards