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)電纜橋架在有防火要求的區(qū)段內(nèi)，可在電纜梯架、托盤內(nèi)添加具有耐火或難燃性能的板、網(wǎng)等材料構(gòu)成封閉或半封閉式結(jié)構(gòu)，并采取在橋架及其支吊架表面涂刷防火涂層等措施，其整體耐火性能應(yīng)滿足有關(guān)規(guī)范或標(biāo)準(zhǔn)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)在工程防火要求較高的場所，不宜采用鋁合金電纜橋架。

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

4)電纜梯架寬度和高度的選擇應(yīng)符合填充率的要求，電纜的梯架的填充率在一般情況下，電力電纜可取40%～50%，控制電纜可取50%～70%，且宜預(yù)留10%～25%工程發(fā)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)在選擇電纜梯架的荷載等級時，電纜橋架的工作均布荷載不應(yīng)大于所選電纜橋架荷載等級的額定均布荷載，如果電纜橋架的支吊架的實(shí)際跨距不等于2m 時，則 工作均布荷載應(yīng)滿足要求。

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)各種組件及支吊架在滿足相應(yīng)荷載的條件下，其規(guī)格尺寸應(yīng)與托盤、梯架的直線段、彎通系列相匹配

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)在選擇電纜橋架的彎通或引上、引下裝置時，不應(yīng)小于電纜橋架內(nèi)電纜小允許彎曲半徑。

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)對于跨距大于6m 的鋼制電纜橋架和跨距大于2m 或承載要求大于荷載等級D級的鋁合金電纜橋架，應(yīng)按工程條件進(jìn)行強(qiáng)度、剛度及穩(wěn)定性的計(jì)算或試驗(yàn)驗(yàn)證。

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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