Groove type cable tray construction plan: according to the map reading and investigation records, selected cable tray in the installation of different structural sections form; According to the contract time limit for a project to determine the construction organization and construction personnel. Determining the construction plan should follow the following provisions:

　?。?）電纜橋架應盡可能在將筑物、構筑物（如墻柱梁、樓板等）上安裝。

　　(1) the cable tray should as far as possible in the structures and structures (such as wall beam, floor, etc.) on the installation.

　?。?）電纜橋架的總平面布置應做到距離短有滿足施工安裝、電纜敷設的要求。

　　(2) the cable tray of the general layout should be the shortest distance is to meet the requirements of the construction, installation and cable laying.

　?。?）梯架或有孔托盤水平敷設時距地面高度不低于2.5ｍ；線槽、無孔托盤局地高度不低于2.2ｍ。但敷設在電氣專用房間（如配電室、電汽豎井、技術層）內除外。

　　(3) the ladder or perforated tray when laying off the ground height not less than 2.5 m; Trough, no local hole tray height not less than 2.2 m. But equipped in electrical dedicated room (such as transformer room, electric steam shaft, technology layer) except within.

　?。?）橋架垂直敷設時，在距第1.8ｍ以下部分應加金屬蓋保護，但敷設在電氣裝用房間內是可除外。

　　(4) bridge vertical run, from 1.8 m in the following sections should add metal cover protection, but is equipped in electrical room can be excluded.

　?。?）槽式電纜橋架多層敷設時其層間距離一般為：

　　(5) the slot type cable tray multi-layer laying its interlayer distance is commonly:

　　a、橋架上布局頂板或其他障礙物不應小于0.3ｍ。

　　A roof, bridge frame layout or other obstacles should not be less than 0.3 m.

　　b、電力電纜橋架間距不應小于0.3ｍ。

　　B, electric cable bridge span should not be less than 0.3 m.

　　c、控制電纜橋架間不應小于0.2ｍ。

　　C, control of cable tray should not be less than 0.2 m.

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