This article will explore the importance of seismic resistance in cable trays, discuss when seismic braces are necessary, and help you understand how to make informed decisions for your installation. Why is seismic bracing important? International Building Code. This appendix provides the design criteria for seismic Category I cable trays and their supports. 1 Codes and Standards The design of cable trays and their supports conform to. Technical overview of seismic cable tray design considerations including bracing splice reinforcement movement accommodation cable retention and support verification. During an earthquake, cable. Cable trays are systems used for the safe transportation and protection of electrical cables, designed to fit the pathways within buildings and structural installations. Mechanical Support Systems New! Founded in 2006 as a subsidiary of Çemesan Group, which has been operating in the steel industry. Seismic forces are generated by the movement of the Earth's crust during an earthquake. These forces can cause ground shaking, which in turn can lead to the displacement, acceleration, and rotation of structures.