GB 50303 Acceptance Code 11.2.3 Consultation
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4. For cable trays or trays installed in electrical shafts, their fixing brackets shall not be mounted on the crossmembers used to secure the cables, and load-bearing brackets shall be provided every 3 to 5 floors. 8. When fixed using metal hangers, the diameter of the round steel shall not be less than 8 mm, and anti-vibration supports shall be provided; fixing supports shall be installed at branches or 0.3 m to 0.5 m from the ends. What is a anti-vibration bracket? What is a fixed bracket? What is a load-bearing bracket? Are there any reference atlases or images?
The various types of brackets mentioned in the GB 50303 acceptance standards have different functions: 1. **Anti-sway brace**: Used to reduce the lateral swaying of cable trays or trays, thereby enhancing the stability of the structure. Such brackets are generally installed on the sides of the ladder frame or at the connection points, especially at corners or branching points. 2. **Fixed bracket**: Used to securely attach cable trays or trays to the building structure, ensuring their stable position. Fixed brackets are usually installed at both ends of the ladder frame or at important connection points. 3. **Load-bearing bracket**: It primarily bears the weight of the cable trays or pallets as well as their loads, ensuring the load-bearing capacity of the entire structure. The placement of load-bearing supports is usually determined by the length of the ladder frame and its load-bearing requirements; generally, one support is installed every few floors. As for reference atlases or images, it is recommended to consult the relevant electrical installation standard manuals. Detailed schematic diagrams and installation instructions are usually provided
22D701-3 Cable Tray Installation