The bridge shall be provided with fixed support points within 500mm of the three ends of the junction box, box, cabinet, corner, turning and deformation joints and T-joints. It is strictly forbidden to cut the hangers with electric welding; it is strictly forbidden to use wooden bricks to fix the hangers and hangers.

 

Bridge installation

 

4.1 When the bridge is installed horizontally, the span of the support is generally 1.5-3m, and the spacing of the fixed points during vertical laying is not more than 2m.

 

4.2 The bridge should be flat, no distortion, no burr on the inner wall, complete accessories

 

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

 

4.4 When laying in the ceiling, if the ceiling cannot be used, the inspection hole should be left.

 

4.5 All non-conductive parts of the bridge shall be connected and bridged to make them a continuous conductor and grounded integrally; the grounding bridge between each bridge shall be braided copper wire.

 

4.6 When the bridge passes through the deformation joint of the building, the bridge itself should be disconnected, and the joint is overlapped by the connecting plate, which does not need to be fixed. The grounding wire and the wire inside the slot should have a compensation margin. Straight section steel bridges should conscientiously implement safety construction rules and regulations to strengthen the management of construction personnel, implement safety construction technical measures, inspect and supervise the safe operation of construction personnel, and achieve safe and civilized construction.

 

1.2 Organize the construction personnel to learn the construction standards and familiar with the construction drawings, strictly follow the design and relevant regulations, specifications, standards and requirements for construction, check the construction quality at any time, and find problems in time for rectification.

 

1.3 The electrical, mechanical equipment and safety protection devices used for scaffolding, parallel installation and construction site shall be in compliance with relevant safety regulations and qualified before acceptance. Construction personnel should observe the following regulations throughout the construction process:

 

2.1 It is necessary to abide by and implement the relevant safety production and civilized construction management system and accept the inspection and supervision of the construction unit supervision personnel. A helmet must be worn to enter the construction site, and the seat belt must be fastened at height.

 

2.3 In the control room, switch room work must have the presence of guardians, and in the case of power failure, should take off metal objects such as watches, keys, lighters, pens, and wear insulated gloves, wear insulated shoes.

 

2.4 When it is necessary to organize the discharge cable, the consent of the guardian should be sought beforehand and under the supervision of the guardian.

 

2.5 After the construction is completed, the construction site should be cleaned up.

 

Safety construction management system

1. The time, number of people and work content must be registered in and out of the work area.

 

2. Construction workers should wear a work badge, wear a helmet and wear overalls when entering the construction site.

 

3, into the work area construction, smoking is strictly prohibited.

 

4. The live working area must be allowed to wear insulated gloves and insulated shoes when working.