1) When cable tray, trunking and its supports and hangers are used in corrosive environment, they shall be made of corrosion-resistant rigid materials, or anti-corrosion treatment shall be adopted. The anti-corrosion treatment shall meet the requirements of engineering environment and durability.

2)电缆桥架在有防火要求的区段内，可在电缆梯架、托盘内添加具有耐火或难燃性能的板、网等材料构成封闭或半封闭式结构，并采取在桥架及其支吊架表面涂刷防火涂层等措施，其整体耐火性能应满足有关规范或标准的要求。

2) In the section with fire protection requirements for cable tray, plates, nets and other materials with fire resistance or flame retardant performance can be added in the cable ladder and tray to form a closed or semi closed structure, and measures such as painting fire retardant coating on the surface of the bridge and its supports and hangers shall be taken. The overall fire resistance shall meet the requirements of relevant national codes or standards.

3)在工程防火要求较高的场所，不宜采用铝合金电缆桥架。

3) In places with high fire protection requirements, aluminum alloy cable tray should not be used.

4)电缆梯架宽度和高度的选择应符合填充率的要求，电缆的梯架的填充率在一般情况下，电力电缆可取40%～50%，控制电缆可取50%～70%，且宜预留10%～25%工程发展裕量。

4) The selection of cable ladder width and height should meet the requirements of filling rate. In general, the filling rate of cable ladder can be 40% to 50% for power cables, 50% to 70% for control cables, and a 10% to 25% engineering development margin should be reserved.

5)在选择电缆梯架的荷载等级时，电缆桥架的工作均布荷载不应大于所选电缆桥架荷载等级的额定均布荷载，如果电缆桥架的支吊架的实际跨距不等于2m 时，则 工作均布荷载应满足要求。

5) When selecting the load level of cable ladder, the working uniform load of cable tray shall not be greater than the rated uniform load of the selected load level of cable tray. If the actual span of the supports and hangers of cable tray is not equal to 2m, the working uniform load shall meet the requirements.

6)各种组件及支吊架在满足相应荷载的条件下，其规格尺寸应与托盘、梯架的直线段、弯通系列相匹配

6) Under the conditions of meeting corresponding loads, the specifications and dimensions of various components and supports and hangers should match the straight section and bending series of trays and ladders

7)在选择电缆桥架的弯通或引上、引下装置时，不应小于电缆桥架内电缆小允许弯曲半径。

7) When selecting the bending or leading up and down device of cable tray, it shall not be less than the minimum allowable bending radius of cable in cable tray.

8)对于跨距大于6m 的钢制电缆桥架和跨距大于2m 或承载要求大于荷载等级D级的铝合金电缆桥架，应按工程条件进行强度、刚度及稳定性的计算或试验验证。

8) For steel cable tray with span greater than 6m and aluminum alloy cable tray with span greater than 2m or bearing requirement greater than load level D, strength, stiffness and stability shall be calculated or tested for verification according to engineering conditions.

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