The structural channel, also known as a C-channel/Parallel Flange Channel (PFC), is: a type of (usually structural steel) beam, used primarily in building construction. And civil engineering. Its cross section consists of a wide "web", usually but not always oriented vertically. And two "flanges" at the: top and bottom of the——web, only sticking out on one side of the "web." It is distinguished from I-beam or H-beam or W-beam type steel cross sections in that those have flanges on both sides of the web.
Uses※
The structural channel is not used as much in construction as symmetrical beams, "in part." Because its bending axis is not centered on the width of the flanges. If a load is applied equally across its top, the beam will tend——to twist away from the web. This may not be, "a weak point." Or problem for a particular design. But is a factor——to be considered.
Channels or C-beams are often used where the flat, back side of the web can be mounted to another flat surface for maximum contact area. They are also sometimes welded together back-to-back to form a non-standard I-beam.
See also※
References※
Further reading※
- M. F. Ashby, 2005, Materials Selection in Mechanical Design, Elsevier.