C – standard channels

C250x22.8

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 = 66d = 254tf = 11.1tf = 11.1tw = 6.1tw = 6.1
Cross-section, to scaledimensions in mm

Dimensions

Depthd
254mm
Flange widthbf
66mm
Web thicknesstw
6.1mm
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
22.8kg/m
Cross-sectional areaA
2,890mm²

Strong axis x–x

Moment of inertiaIx
2810⁶ mm⁴
Elastic section modulusSx
22110³ mm³
Plastic section modulusZx
26110³ mm³
Radius of gyrationrx
98.6mm

Weak axis y–y

Moment of inertiaIy
0.94510⁶ mm⁴
Elastic section modulusSy
18.810³ mm³
Plastic section modulusZy
38.310³ mm³
Radius of gyrationry
18.1mm

Torsion and stability

Torsional constantJ
8710³ mm⁴
Warping constantCw
12.210⁹ mm⁶
Effective radius of gyrationrts
22mm
Polar radius (shear center)r̄o
106mm
Flexural constantH
0.884
Shear centereo
20.2mm

Centers

Centroidx̄
16.1mm
Plastic neutral axisxp
5.69mm

Slenderness ratios

Web slendernessh/tw
34
Wall slendernessb/t
5.96

Equivalents in other standards