MC – miscellaneous channels

MC310x74

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 = 105d = 305tf = 17.8tf = 17.8tw = 21.2tw = 21.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Flange widthbf
105mm
Web thicknesstw
21.2mm
Flange thicknesstf
17.8mm
Distance k (design)kdes
33.3mm
Distance k (detailing)kdet
33.3mm
Web clear depthT
238mm
Distance between flange centroidsho
287mm

Mass and area

Mass per lengthm
74kg/m
Cross-sectional areaA
9,480mm²

Strong axis x–x

Moment of inertiaIx
11210⁶ mm⁴
Elastic section modulusSx
73610³ mm³
Plastic section modulusZx
92610³ mm³
Radius of gyrationrx
109mm

Weak axis y–y

Moment of inertiaIy
7.2410⁶ mm⁴
Elastic section modulusSy
92.410³ mm³
Plastic section modulusZy
17910³ mm³
Radius of gyrationry
27.7mm

Torsion and stability

Torsional constantJ
1,34010³ mm⁴
Warping constantCw
11010⁹ mm⁶
Effective radius of gyrationrts
34.8mm
Polar radius (shear center)r̄o
121mm
Flexural constantH
0.859
Shear centereo
18.8mm

Centers

Centroidx̄
26.7mm
Plastic neutral axisxp
15.6mm

Slenderness ratios

Web slendernessh/tw
11
Wall slendernessb/t
5.91

Equivalents in other standards