C-Beam™ is a proprietary product of SteelFab, Inc.. It comes in two varieties: Castellated (with hexagonal web openings) and Cellular (with round web openings). C-Beam design has been implemented in the RAM Structural System. A C-Beam is created from a standard wide-flange beam by cutting it longitudinally in a zig-zag or semi-circular pattern, separating and offsetting the two halves, and welding them back together. The result is a deeper, stiffer beam of the same weight as the original. Also, the resulting holes in the webs permit mechanical ducts, plumbing and electrical lines to pass through the beam rather than beneath the beam. A C-Beam may be designed as either composite or noncomposite beams.