When seismic bracing is required for piping, ductwork, conduit, and cable tray under ASCE 7-22 §13. Threshold rules, longitudinal vs transverse bracing, MSS SP-58/SP-127 and SMACNA guidance, and the hospital-specific I_p = 1. Distribution systems — piping, ductwork, conduit. Suspended systems such as piping, equipment and ductwork need seis-mic braces to keep them from swaying during an earthquake. Seismic braces can be flexible using aircraft quality cables, or rigid (solid) using steel sections such as pipe, angles, or strut channels. We have decades of experience with real-world applications in severe seismic zones, supplying orld-class products and solutions. Our strong legacy includes OSHPD OPA and OPM approvals, Structural Engineer approvals, and compliance with Internation-al Building. An innovative bracing system was designed to provide lateral bracing for the cable tray system. Recommendations are made for improvements in the design procedures for seismic bracing of. Seismic Bracing Requirements The rules and requirements for the seismic restraints are published in the model building codes: The UniformBuilding Code (International Conference of Building Officials), National Building Code (Building Officials and Code Administrators), StandardBuilding Code.
