The buried depth of buried grounding flat steel meets the design and specification requirements.
6.
Graphic analysis of basic grounding construction process: 1.
The equipotential box in the toilet shall be reserved with grounding reinforcement and reliably welded with the grading ring.
The down lead in the column is reliably welded with the grading ring in the beam, which adopts double-sided welding, and the weld length meets the specification requirements.
5.
4.
Process flow: Construction of pile foundation downlead in foundation → laying of grounding flat steel → construction of downlead in column → welding of grading ring → grounding construction of doors and windows → construction of equipotential box → welding of roof lightning protection network → grounding resistance test → production and installation of grounding signs Key control points: lap weld length, downlead marking, equipotential box installation, roof lightning protection network construction and grounding resistance test.
The grading ring in the beam is welded with double-sided welding, The weld length shall meet the specification requirements.
The grounding connecting plate shall be reserved for the aluminum alloy doors and windows of the outer wall and reliably welded with the downlead in the column.
The equipotential box shall be flush with the wall after installation, and the box shall be clean and tidy..
The installation elevation of the equipotential box in the toilet shall be accurate, and the filling between the toilet and the masonry shall be full.
When the foundation grounding bus passes through the retaining wall, Embedded hot-dip galvanized grounding flat steel and reliably welded with the down lead in the wall.
3.
When the foundation grounding bus passes through the column base, the hot-dip galvanized grounding flat steel shall be embedded and reliably welded with the downlead in the column.
Graphic analysis of floor lightning protection grounding construction process: 1.
3.
2.
2.
