ASCE 7 + IBC set the U. seismic restraint rules for cable trays, conduits, bus duct, hangers, and anchors. IEEE 693 is for test-qualified utility and substation assemblies, often through shake-table testing. According to the “ GB50981-2014 Code for Seismic Design of Building Mechanical and Electrical Engineering”, seismic bracing for piping and cable trays in power systems is required if one of the following two conditions is met: The inner diameter of the electrical conduit is greater than or equal to. Overview of a cable tray seismic bracing load path from tray rail to structure. This guide serves EPC engineers, MEP contractors, procurement teams, and site inspectors working on industrial plants, data centers, metro and tunnel projects, and commercial buildings. Confirm the Governing Seismic Design Basis Before selecting tray hardware, confirm the seismic design basis for the project. These codes mandate specific reinforcement. Recommendations are made for improvements in the design procedures for seismic bracing of nonstructural components. INTRODUCTION large telecommunication company embarked on a program that included building a series of telecommunications facilities in the Seattle, Washington area.
