C – standard channels

C380x74

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 = 94.5d = 381tf = 16.5tf = 16.5tw = 18.2tw = 18.2
Cross-section, to scaledimensions in mm

Dimensions

Depthd
381mm
Flange widthbf
94.5mm
Web thicknesstw
18.2mm
Flange thicknesstf
16.5mm
Distance k (design)kdes
36.6mm
Distance k (detailing)kdet
36.5mm
Web clear depthT
308mm
Distance between flange centroidsho
366mm

Mass and area

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

Strong axis x–x

Moment of inertiaIx
16810⁶ mm⁴
Elastic section modulusSx
88210³ mm³
Plastic section modulusZx
1,12010³ mm³
Radius of gyrationrx
133mm

Weak axis y–y

Moment of inertiaIy
4.5810⁶ mm⁴
Elastic section modulusSy
61.810³ mm³
Plastic section modulusZy
13310³ mm³
Radius of gyrationry
22mm

Torsion and stability

Torsional constantJ
1,10010³ mm⁴
Warping constantCw
13210⁹ mm⁶
Effective radius of gyrationrts
29.7mm
Polar radius (shear center)r̄o
139mm
Flexural constantH
0.937
Shear centereo
14.8mm

Centers

Centroidx̄
20.3mm
Plastic neutral axisxp
12.4mm

Slenderness ratios

Web slendernessh/tw
17.3
Wall slendernessb/t
5.72

Equivalents in other standards