The pier pin is hardened steel to the best of my knowledge. Hardware store
threaded rod is Grade 3.
The pin is the correct way to install a guyed tower and it makes the guys do
the work and not generate undue stress and potential cracks in the bottom
section. Ive simply sunk a section in concrete for some light duty installs
but when serious windloading is planned then the pin is the choice.
Dont ever put a ground rod in the concrete base. A lightining strike can
easily explode the concrete.
----- Original Message -----
From: "D. Scott MacKenzie" <email@example.com>
Sent: Sunday, May 13, 2007 2:06 PM
Subject: [TowerTalk] Rohn BPC25G
> I have the Rohn BPC25G, which is the concrete base plate for 25G. It
> requires a single pier pin, but there are two holes - one in the center,
> one at the edge of the plate. I realize I use the center pin, but what
> purpose does the other hole serve?
> The pier pin, Rohn 3/4x12PP, is also a smooth pin, without any other
> features. There is nothing to hold it in the concrete.
> Would 3/4" threaded rod (material is similar to the pier pin), with large
> fender washers also serve as a better pin - at least there would be
> something to hold it in the concrete. There is nothing that I have found
> the Rohn catalog that would provide me guidance.
> I would appreciate your guidance.
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