C shapes (standard channels)

C8X11.5 C200X17.1

Standard: AISC Shapes Database v16.0Source: AISC (aisc.org) — Shapes Database v16.0 (Excel file)
Values published by AISC, in US customary (original) and SI units.
xybf = 2.26d = 8tf = 0.39tf = 0.39tw = 0.22tw = 0.22
Cross-section, to scaledimensions in inches

Dimensions

Depthd
8in
Flange widthbf
2.26in
Web thicknesstw
0.22in
Flange thicknesstf
0.39in
Distance k (design)kdes
0.938in
Distance k (detailing)kdet
0.9375in
Web clear depthT
6.125in
Distance between flange centroidsho
7.61in

Mass and area

Mass per lengthm
11.5lb/ft
Cross-sectional areaA
3.37in²

Strong axis x–x

Moment of inertiaIx
32.5in⁴
Elastic section modulusSx
8.14in³
Plastic section modulusZx
9.63in³
Radius of gyrationrx
3.11in

Weak axis y–y

Moment of inertiaIy
1.31in⁴
Elastic section modulusSy
0.775in³
Plastic section modulusZy
1.57in³
Radius of gyrationry
0.623in

Torsion and stability

Torsional constantJ
0.13in⁴
Warping constantCw
16.5in⁶
Effective radius of gyrationrts
0.756in
Polar radius (shear center)r̄o
3.41in
Flexural constantH
0.862
Shear centereo
0.697in

Centers

Centroidx̄
0.572in
Plastic neutral axisxp
0.211in

Slenderness ratios

Web slendernessh/tw
28.9
Wall slendernessb/t
5.79

Equivalents in other standards