-40x4 hot galvanized flat steel, a water 1m, what do you mean?
The protective layer to protect the housing outside the gutter and rain water is the life of the building apron. The water is hot galvanized flat steel by this protective layer 1 meters. Hope to be of help to you!
Water is to protect the wall foundation using cement mortar width not less than 600 of a circle along the walls of the cement ground, if the main part of the project before the electrical engineering, auxiliary grounding length less than in bulk water, auxiliary grounding, ditching to destroy the water, so that the design requirements of 1 meters water is conducive to the construction of welding, may be more than one meter in order to facilitate their work.
This is an auxiliary grounding electrode lead, if the main body foundation has reached the design resistance of less than 4 ohms, can not be auxiliary grounding electrode.
