Deep Well Groundbeds: Where soil resistivity at the surface are very high, a series of vertical anodes are sometimes installed in deep well groundbeds (up to 100 m and more deep).
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Deepwell Anode Groundbed
For underground structures requiring cathodic protection, the location and nature of the site where the anode is placed needs careful consideration. The location which is specifically prepared to house a single or a combination of anodes is called a groundbed.
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Vertical Anode GroundbedXa kev nug