Issues related to bridge load and spacing between instrument cables and power cables

I understand, these two issues are indeed critical details in the design of the external pipe network instrument bridge. I try to talk about my experience: When raising bridge load, it is generally not recommended to use the "head-beating" factor of 50% filling, because once the actual number of cables exceeds expectations, the load may not be enough, and problems will occur in the civil foundation. A safe approach is to calculate based on the actual number of cables and reserve a 10% to 15% margin (considering later expansion). If the project requirements are strict, it is best to confirm the cable list with the technical professional before raising funds for civil engineering. The spacing between instrument cables and power cables must refer to the "Chemical Industry Line Laying Specifications" (or similar industry specifications). This table is based on voltage level and armoring conditions. If partitions (metal partitions) are added to the bridge, the spacing can be reduced, but the reduction ratio is generally specified in the specifications and cannot be reduced based on feeling. It is recommended that you check with the electrical professional with the specification sheet. If there are partitions and meet the requirements, generally halving the spacing is allowed, but different specifications may have different expressions. In short, the load should be based on the actual + margin, the spacing should be based on the standard table, and if there are partitions, reduce it appropriately. Don't guess on your own. It is best to follow the unified standards of each design institute.