AMERICAN STANDARD STEEL CHANNEL SIZES
American Standard Steel Channel Size Calculator has been developed to show basic
dimensions and sectional properties of steel channels (C shapes).
Steel channel or "C" channel is generally known as American Standard Channel and it's a section with two
tapering parallel flanges connected by a web. Steel channels are similar to
standard I beams
except that with steel channels, the flanges extend on only one side of
the web. Fabrication method of steel channels is
generally with hot rolling. The designation of the steel channels gives information about the width and weight per unit length. For example
C10 X 30 means 10 inches depth and 30 pounds per foot weight per unit length.
The dimensions of the American standard steel channels are defined in the annex of ASTM A 6/A 6M standard.
Calculator:

OUTPUT PARAMETERS 
Parameter 
Symbol 
Value 
Unit 
Designation 
 


 
Weight per unit length 
W 


lb/ft

Cross section area 
A 


in^2

Depth 
d 


in

Web thickness 
t_{w} 


Flange width 
b_{f} 


Flange thickness 
t_{f} 


Second moment of area 
I_{xx} 


in^4

Second moment of area 
I_{yy} 


Section modulus 
S_{xx} 


in^3

Section modulus 
S_{yy} 


Radius of gyration 
r_{x} 


in 
Radius of gyration 
r_{y} 


Distance from Cog of section to
outer face of structural shape 
x 


Note: Use dot "." as decimal separator.
Definitions:
Second Moment of Area: The
capacity of a crosssection to resist bending.
Radius of Gyration (Area): The
distance from an axis at which the area of a body may be assumed to be
concentrated and the second moment area of this configuration equal to the
second moment area of the actual body about the same axis.
Section Modulus: The moment of
inertia of the area of the cross section of a structural member divided by the
distance from the center of gravity to the farthest point of the section; a
measure of the flexural strength of the beam.
Reference:

Oberg, E. , Jones ,F.D. , Horton H.L. , Ryffel H.H., (2012) .
Machinery's Handbook
. 29th edition. Industrial Press Inc., pp 2594  2597
 A 6/A 6M  05a , Standard Speciﬁcation for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling