How to make a lightning protection grounding network?

The ground network plan is as follows:

A. Buried hot-dip galvanized angle steel ground electrode (5 × 50 × 50 × 2500mm) with a distance of 5 meters.

B. The angle steel ground electrode is composed of 4 × 40mm flat steel, and the ring network is connected.

Ground network construction procedures: Before construction, you must fully understand the topography and geological structure of the construction site, and then determine the hole locations of the ground electrodes and connecting conductor trenches according to the plan design and site conditions before construction and installation. Pay attention to avoid cable trenches, pipelines and other conductive devices. Before construction, a written application must be submitted to the construction unit to agree to the construction. (The resistivity of the design soil is 250Ω · m.)

A. Trenching: Use excavation tools reasonably and adopt layer-by-layer digging method. The trench depth should be at least 0.8 meters, and the trench width should be deep enough.

B. Driving: Use an appropriate tool to drive the angle steel ground electrode. The angle steel ground electrode is buried below 0.8 meters deep, that is, the bottom of the flat groove on the head of the ground electrode.

C. Connection: Connect the installed angle steel ground electrode with 40 * 4 flat steel to form a mesh; all connections are welded.

D. Backfill: first fill the soil, tamp the layers, and arrange the road surface.