4.1 when the bridge is installed horizontally, the support span is generally 1.5-3m, and the spacing of fixed points is not easy to be greater than 2m when it is laid vertically.

4.2橋架應平整，無扭曲變形，內壁無毛刺，各種附件齊全

4.2 the bridge shall be flat without distortion and deformation, the inner wall shall be free of burrs, and various accessories shall be complete

4.3橋架接口應平整，接縫處應緊密平直。槽蓋裝上后應平整，無翹角，出線口的位置準確。

4.3 the bridge interface shall be flat, and the joint shall be tight and straight. After the slot cover is installed, it shall be flat without warping angle, and the position of outlet shall be accurate.

4.4在吊頂內敷設時，如果吊頂無法上人時應留有檢修孔。

4.4 when laying in the ceiling, if the ceiling cannot be accessed, an access hole shall be reserved.

4.5橋架的所有非導電部分的鐵件均應相互連接和跨接，使之成為一連續導體，并做好整體接地；每段橋架之間的接地跨接采用編織銅線。

4.5 the iron parts of all non-conductive parts of the bridge shall be connected and bridged to form a continuous conductor, and shall be grounded as a whole; The grounding jumper between each section of bridge adopts braided copper wire.

4.6橋架經過建筑物的變形縫時，橋架本身應斷開，槽內用連接板搭接，不需固定。保護地線和槽內導線應留有補償余量。直線段鋼制橋應認真執行安全施工規章制度加強對施工人員管理，落實安全施工技術措施，檢查和督促施工人員安全作業，做到安全、文明施工。

4.6 when the bridge passes through the deformation joint of the building, the bridge itself shall be disconnected, and the groove shall be overlapped with connecting plates without fixing. Compensation allowance shall be reserved for protective ground wire and conductor in slot. The steel bridge in straight section shall carefully implement the rules and regulations for safe construction, strengthen the management of construction personnel, implement technical measures for safe construction, check and supervise the safe operation of construction personnel, and achieve safe and civilized construction.

1.2組織施工人員學習施工標準和熟悉施工圖紙，嚴格按照設計及有關規定、規范、標準要求進行施工，隨時檢查施工質量，發現問題及時整改。

1.2 organize construction personnel to learn construction standards and be familiar with construction drawings, carry out construction in strict accordance with the design and relevant regulations, specifications and standards, check construction quality at any time, and rectify problems in time.

1.3對施工現場搭設腳手架、并架和施工現場使用的電氣、機械設備、安全防護裝置應符合相關安全規定并驗收合格后才能使用。?施工人員在整個施工過程中應遵守下列規定：

1.3 scaffolds shall be erected and combined on the construction site, and electrical, mechanical equipment and safety protection devices used on the construction site shall comply with relevant safety regulations and can only be used after passing the acceptance.? Construction personnel shall abide by the following regulations during the whole construction process:

2.1建議遵守和執行相關的安全生產、文明施工的管理制度并應接受建設單位監理人員的檢查監督。建議戴安全帽進入施工現場，高空作業建議系好安全帶。

2.1 relevant management systems for safe production and civilized construction must be observed and implemented, and shall be subject to the inspection and supervision of the supervisor of the owner. Safety helmet must be worn to enter the construction site, and safety belt must be fastened for high-altitude operation.

2.3在控制室、開關室工作建議要有監護人員在場，并在斷電的情況下進行作業，應摘下手表、鑰匙、打火機、鋼筆等金屬物品，并戴絕緣手套，穿絕緣鞋。

2.3 when working in the control room and switch room, supervisors must be present and work in case of power failure. Take off metal items such as watches, keys, lighters and pens, and wear insulating gloves and insulating shoes.

2.4需要整理排放電纜時，事前應征求監護人員的同意，并在監護人員監護下進行。

2.4 when it is necessary to arrange and discharge cables, the consent of the supervisor shall be obtained in advance and carried out under the supervision of the supervisor.

2.5施工完畢后，應將施工現場清理干凈。

2.5 after construction, the construction site shall be cleaned.

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