C shapes (standard channels)

C12X25 C310X37

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 = 3.05d = 12tf = 0.501tf = 0.501tw = 0.387tw = 0.387
Cross-section, to scaledimensions in inches

Dimensions

Depthd
12in
Flange widthbf
3.05in
Web thicknesstw
0.387in
Flange thicknesstf
0.501in
Distance k (design)kdes
1.13in
Distance k (detailing)kdet
1.125in
Web clear depthT
9.75in
Distance between flange centroidsho
11.5in

Mass and area

Mass per lengthm
25lb/ft
Cross-sectional areaA
7.34in²

Strong axis x–x

Moment of inertiaIx
144in⁴
Elastic section modulusSx
24in³
Plastic section modulusZx
29.4in³
Radius of gyrationrx
4.43in

Weak axis y–y

Moment of inertiaIy
4.45in⁴
Elastic section modulusSy
1.87in³
Plastic section modulusZy
3.82in³
Radius of gyrationry
0.779in

Torsion and stability

Torsional constantJ
0.538in⁴
Warping constantCw
130in⁶
Effective radius of gyrationrts
1in
Polar radius (shear center)r̄o
4.72in
Flexural constantH
0.909
Shear centereo
0.746in

Centers

Centroidx̄
0.674in
Plastic neutral axisxp
0.306in

Slenderness ratios

Web slendernessh/tw
25.6
Wall slendernessb/t
6.09

Equivalents in other standards