C shapes (standard channels)

C15X50 C380X74

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 = 3.72d = 15tf = 0.65tf = 0.65tw = 0.716tw = 0.716
Cross-section, to scaledimensions in inches

Dimensions

Depthd
15in
Flange widthbf
3.72in
Web thicknesstw
0.716in
Flange thicknesstf
0.65in
Distance k (design)kdes
1.44in
Distance k (detailing)kdet
1.438in
Web clear depthT
12.13in
Distance between flange centroidsho
14.4in

Mass and area

Mass per lengthm
50lb/ft
Cross-sectional areaA
14.7in²

Strong axis x–x

Moment of inertiaIx
404in⁴
Elastic section modulusSx
53.8in³
Plastic section modulusZx
68.5in³
Radius of gyrationrx
5.24in

Weak axis y–y

Moment of inertiaIy
11in⁴
Elastic section modulusSy
3.77in³
Plastic section modulusZy
8.14in³
Radius of gyrationry
0.865in

Torsion and stability

Torsional constantJ
2.65in⁴
Warping constantCw
492in⁶
Effective radius of gyrationrts
1.17in
Polar radius (shear center)r̄o
5.49in
Flexural constantH
0.937
Shear centereo
0.583in

Centers

Centroidx̄
0.799in
Plastic neutral axisxp
0.49in

Slenderness ratios

Web slendernessh/tw
17.3
Wall slendernessb/t
5.72

Equivalents in other standards