What is the difference between the external wall and the door and the wall? Feeling the same ah
The use of building natural grounding device for grounding, grounding resistance requirements are the same.
The equipotential bonding of the curtain wall is common with a steel base with a cement base applied to the roof, forming a grid, and bridging the curtain wall steel beam at the same time. Most of the metal doors and windows are dark connection, the curtain wall is a lot of apply.
Curtain wall grounding is generally completed with the civil construction, the external walls of the doors and windows are added or completed after the completion of the civil, some metal doors and windows in the construction did not leave the location of the ground, need to tick the main bar to connect. If the external walls of metal doors and windows in the civil construction to stay out of the bar, you can use the terminal connected to the cord and straight welding two practices, the curtain wall is generally straight welding, in the expansion joints can be used to connect the soft connection.
