C shapes (standard channels)

C7X9.8 C180X14.6

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 = 2.09d = 7tf = 0.366tf = 0.366tw = 0.21tw = 0.21
Cross-section, to scaledimensions in inches

Dimensions

Depthd
7in
Flange widthbf
2.09in
Web thicknesstw
0.21in
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
9.8lb/ft
Cross-sectional areaA
2.87in²

Strong axis x–x

Moment of inertiaIx
21.2in⁴
Elastic section modulusSx
6.07in³
Plastic section modulusZx
7.19in³
Radius of gyrationrx
2.72in

Weak axis y–y

Moment of inertiaIy
0.957in⁴
Elastic section modulusSy
0.617in³
Plastic section modulusZy
1.26in³
Radius of gyrationry
0.578in

Torsion and stability

Torsional constantJ
0.0996in⁴
Warping constantCw
9.15in⁶
Effective radius of gyrationrts
0.698in
Polar radius (shear center)r̄o
3.02in
Flexural constantH
0.845
Shear centereo
0.647in

Centers

Centroidx̄
0.541in
Plastic neutral axisxp
0.205in

Slenderness ratios

Web slendernessh/tw
25.8
Wall slendernessb/t
5.71

Equivalents in other standards