C – standard channels

C310x45

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 = 80.5d = 305tf = 12.7tf = 12.7tw = 13tw = 13
Cross-section, to scaledimensions in mm

Dimensions

Depthd
305mm
Flange widthbf
80.5mm
Web thicknesstw
13mm
Flange thicknesstf
12.7mm
Distance k (design)kdes
28.7mm
Distance k (detailing)kdet
28.6mm
Web clear depthT
248mm
Distance between flange centroidsho
292mm

Mass and area

Mass per lengthm
45kg/m
Cross-sectional areaA
5,680mm²

Strong axis x–x

Moment of inertiaIx
67.410⁶ mm⁴
Elastic section modulusSx
44210³ mm³
Plastic section modulusZx
55410³ mm³
Radius of gyrationrx
109mm

Weak axis y–y

Moment of inertiaIy
2.1310⁶ mm⁴
Elastic section modulusSy
33.610³ mm³
Plastic section modulusZy
70.810³ mm³
Radius of gyrationry
19.4mm

Torsion and stability

Torsional constantJ
35810³ mm⁴
Warping constantCw
40.510⁹ mm⁶
Effective radius of gyrationrts
25.7mm
Polar radius (shear center)r̄o
115mm
Flexural constantH
0.919
Shear centereo
15.7mm

Centers

Centroidx̄
17.1mm
Plastic neutral axisxp
9.32mm

Slenderness ratios

Web slendernessh/tw
19.4
Wall slendernessb/t
6.33

Equivalents in other standards