C – standard channels

C250x37

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 = 73.4d = 254tf = 11.1tf = 11.1tw = 13.4tw = 13.4
Cross-section, to scaledimensions in mm

Dimensions

Depthd
254mm
Flange widthbf
73.4mm
Web thicknesstw
13.4mm
Flange thicknesstf
11.1mm
Distance k (design)kdes
25.4mm
Distance k (detailing)kdet
27mm
Web clear depthT
203mm
Distance between flange centroidsho
243mm

Mass and area

Mass per lengthm
37kg/m
Cross-sectional areaA
4,740mm²

Strong axis x–x

Moment of inertiaIx
37.910⁶ mm⁴
Elastic section modulusSx
29810³ mm³
Plastic section modulusZx
37910³ mm³
Radius of gyrationrx
89.4mm

Weak axis y–y

Moment of inertiaIy
1.3910⁶ mm⁴
Elastic section modulusSy
24.110³ mm³
Plastic section modulusZy
52.110³ mm³
Radius of gyrationry
17.1mm

Torsion and stability

Torsional constantJ
28610³ mm⁴
Warping constantCw
18.310⁹ mm⁶
Effective radius of gyrationrts
23.1mm
Polar radius (shear center)r̄o
95.5mm
Flexural constantH
0.912
Shear centereo
12.5mm

Centers

Centroidx̄
15.7mm
Plastic neutral axisxp
9.32mm

Slenderness ratios

Web slendernessh/tw
15.5
Wall slendernessb/t
6.63

Equivalents in other standards