C shapes (standard channels)

C7X12.25 C180X18.2

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 = 2.19d = 7tf = 0.366tf = 0.366tw = 0.314tw = 0.314
Cross-section, to scaledimensions in inches

Dimensions

Depthd
7in
Flange widthbf
2.19in
Web thicknesstw
0.314in
Flange thicknesstf
0.366in
Distance k (design)kdes
0.875in
Distance k (detailing)kdet
0.875in
Web clear depthT
5.25in
Distance between flange centroidsho
6.63in

Mass and area

Mass per lengthm
12.25lb/ft
Cross-sectional areaA
3.59in²

Strong axis x–x

Moment of inertiaIx
24.2in⁴
Elastic section modulusSx
6.92in³
Plastic section modulusZx
8.46in³
Radius of gyrationrx
2.59in

Weak axis y–y

Moment of inertiaIy
1.16in⁴
Elastic section modulusSy
0.696in³
Plastic section modulusZy
1.42in³
Radius of gyrationry
0.568in

Torsion and stability

Torsional constantJ
0.161in⁴
Warping constantCw
11.2in⁶
Effective radius of gyrationrts
0.722in
Polar radius (shear center)r̄o
2.86in
Flexural constantH
0.862
Shear centereo
0.538in

Centers

Centroidx̄
0.525in
Plastic neutral axisxp
0.257in

Slenderness ratios

Web slendernessh/tw
17.3
Wall slendernessb/t
5.98

Equivalents in other standards