1. The load level of the straight tray type bridge should be accurately selected. When estimating the weight of cables, it is advisable to consider the weight of the reserved margin; Temporary additional concentrated loads or other special loads that need to be considered for construction and inspection.

2.应编制铝合金桥架系统所需托盘、梯架纵贯、弯通、支吊架及主要附件的规格和数目的明细表，并注明其荷载等级和表面防腐处理等技术要求。

2. A detailed list of the specifications and quantities of trays, ladder frames, vertical runs, bends, supports, hangers, and main accessories required for the aluminum alloy bridge system should be prepared, and their load levels and surface anti-corrosion treatment technical requirements should be indicated.

3.系统平面布置图中应标出铝合金桥架的路径走向，托盘或梯架的规格、层数，各类弯通的位置，变宽、变高板及伸缩板的设置点，支吊架的配置及相关尺寸。

3. The system layout plan should indicate the path direction of the aluminum alloy cable tray, the specifications and layers of the tray or ladder, the positions of various bends, the setting points of the widened, raised, and expansion plates, the configuration and related dimensions of the supports and hangers.

4.系统设计应保证桥架能知足工程所需敷设电缆的总量。

4. The system design should ensure that the bridge can meet the total amount of cables required for the project.

5.系统设计时应优先选用尺度系列产品，对工程所需的非尺度件应给出详图及技术说明。

5. When designing the system, priority should be given to selecting scale series products, and detailed drawings and technical descriptions should be provided for non scale components required by the project.

6.系统剖面图中应标出铝合金桥架的层间间距、支吊架的层间标高、路径走向的标高变动、支吊架的安装方式等。

6. The system profile should indicate the interlayer spacing of the aluminum alloy bridge, the interlayer elevation of the supports and hangers, the elevation changes in the path direction, and the installation method of the supports and hangers.

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