To: | Randy <randy@verizon.net> |
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Subject: | Re: [TowerTalk] Conductive Concrete and Grounding |
From: | Gary Schafer <garyschafer@comcast.net> |
Reply-to: | garyschafer@comcast.net |
Date: | Wed, 26 Jan 2005 15:04:57 -0500 |
List-post: | <mailto:towertalk@contesting.com> |
Randy wrote: It *will* cause concrete to explode exactly like wood, trees, etc., i.e. Personally, I wouldn't want such a system in either Ufer grounds can be quite effective if done properly. But they should not be the only ground used. In a tower base you already have a connection into the concrete if you have J bolts that the tower is bolted to. The rebar should be bonded together when using a Ufer ground (as it should be in the tower base). That will prevent arcs within. Concrete retains lots of moisture so it makes a pretty good ground. I have seen a couple of tower bases cracked / split from lightning going into the J bolts. But these were on installations with no ground rods attached! I also saw a large chunk of concrete that was blown apart on a sea wall near where my boat was tied. Lightning hit a palm tree a few feet away and found a small existing crack in the concrete on its way to ground. Ufer grounds are fine if installed properly and other ground systems are also used. _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA. _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/listinfo/towertalk |
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