The Seismic Bracing System Our seismic brace consists of four basic components: the Wire Rope/Cable™, a factory-attached stake eye end treatment, an oval sleeve used to secure the cable loop, and a universal restraint clip (URC). High-seismicity projects place much greater demands on cable tray systems than ordinary installations. During an earthquake, cable trays are exposed not only to gravity loads and normal service loads, but also to lateral movement, vertical acceleration, vibration, and building drift. The bracing system was designed to meet building code requirements in addition to the owner's design criteria. Recommendations are made for improvements in the design procedures for seismic bracing of. In regions prone to seismic activity, ensuring that your cable tray system is capable of withstanding such events is vital. 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. Eaton's TOLCO seismic bracing solutions help protect people and non-structural components during an earthquake. For over 60 years, the mechanical, electrical, and fire protection trades have relied on TOLCO seismic bracing solutions. Why is seismic bracing important? International Building Code. THIS REPORT WAS PREPARED BY THE ORGANIZATION(S) NAMED BELOW AS AN ACCOUNT OF WORK SPONSORED OR COSPONSORED BY THE ELECTRIC POWER RESEARCH INSTITUTE, INC.