C – standard channels

C200x27.9

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 = 64.3d = 203tf = 9.91tf = 9.91tw = 12.4tw = 12.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
203mm
Flange widthbf
64.3mm
Web thicknesstw
12.4mm
Flange thicknesstf
9.91mm
Distance k (design)kdes
23.8mm
Distance k (detailing)kdet
23.8mm
Web clear depthT
156mm
Distance between flange centroidsho
193mm

Mass and area

Mass per lengthm
27.9kg/m
Cross-sectional areaA
3,550mm²

Strong axis x–x

Moment of inertiaIx
18.310⁶ mm⁴
Elastic section modulusSx
18010³ mm³
Plastic section modulusZx
22810³ mm³
Radius of gyrationrx
71.6mm

Weak axis y–y

Moment of inertiaIy
0.8210⁶ mm⁴
Elastic section modulusSy
16.610³ mm³
Plastic section modulusZy
35.610³ mm³
Radius of gyrationry
15.2mm

Torsion and stability

Torsional constantJ
18110³ mm⁴
Warping constantCw
6.7410⁹ mm⁶
Effective radius of gyrationrts
20.3mm
Polar radius (shear center)r̄o
77.5mm
Flexural constantH
0.894
Shear centereo
10.9mm

Centers

Centroidx̄
14.4mm
Plastic neutral axisxp
8.74mm

Slenderness ratios

Web slendernessh/tw
13
Wall slendernessb/t
6.49

Equivalents in other standards