C shapes (standard channels)

C10X20 C250X30

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 = 2.74d = 10tf = 0.436tf = 0.436tw = 0.379tw = 0.379
Cross-section, to scaledimensions in inches

Dimensions

Depthd
10in
Flange widthbf
2.74in
Web thicknesstw
0.379in
Flange thicknesstf
0.436in
Distance k (design)kdes
1in
Distance k (detailing)kdet
1.063in
Web clear depthT
8in
Distance between flange centroidsho
9.56in

Mass and area

Mass per lengthm
20lb/ft
Cross-sectional areaA
5.87in²

Strong axis x–x

Moment of inertiaIx
78.9in⁴
Elastic section modulusSx
15.8in³
Plastic section modulusZx
19.4in³
Radius of gyrationrx
3.67in

Weak axis y–y

Moment of inertiaIy
2.8in⁴
Elastic section modulusSy
1.31in³
Plastic section modulusZy
2.7in³
Radius of gyrationry
0.69in

Torsion and stability

Torsional constantJ
0.368in⁴
Warping constantCw
56.9in⁶
Effective radius of gyrationrts
0.894in
Polar radius (shear center)r̄o
3.93in
Flexural constantH
0.9
Shear centereo
0.636in

Centers

Centroidx̄
0.606in
Plastic neutral axisxp
0.294in

Slenderness ratios

Web slendernessh/tw
21.6
Wall slendernessb/t
6.28

Equivalents in other standards