And use two of the upper and lower two layers of steel bars in the foundation beam to be electrically connected to form a ring-shaped foundation grounding network
And the use of the upper and lower two layers of steel in the base beam of two more than 16 main ribs long electrical connection into a ring of the basic ground network.
In addition, the circular foundation grounding grid is formed by connecting two layers of steel bars larger than 16 in the upper and lower layers of foundation beam