In conclusion, whether or not you need seismic braces for your cable trays depends on several factors, including local building codes, the importance of the cables being supported, application-specific needs, and advancements in seismic brace technology. In areas with a high risk of seismic activity, the requirements for cable tray installations are often very strict. For example, in earthquake-prone regions like California, Japan, or parts of. Cable tray type matters in seismic design because stiffness, mass, joint behavior, and cable containment all affect performance. In many high-seismicity applications, ladder tray is often preferred for primary distribution because it provides a strong structural form with relatively efficient. Cable bracing works in tension, so it requires two opposing brace assemblies at each brace location. However, use of rigid bracing is limited depending on the drop length. In addition, the owner of the facility imposed additional design criteria for the seismic bracing. Use 2 EZ BN 3/8 to attach cables to FAS PCH for sway bracing.
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