[TowerTalk] Bearing plate for pier pin foundation?

[john at kk9a.com]

About 15 years ago I purchased a Rohn 65G tower with a pier pin base.  The 
drawings showed a bearing plate, but one was not included with my tower 
package.  I called Rohn and I was told that it was not needed for my 
installation so I set the tower right on the concrete.

John KK9A


To: towertalk at contesting.com
Subject: [TowerTalk] Bearing plate for pier pin foundation?
From: "Brian Machesney"
Date: Mon, 6 Oct 2008 10:35:41 -0400


To the tower knowledgeable:

Rohn's mechanical drawing of concrete bases for guyed towers shows a
"bearing plate" on top of the concrete base, apparently concentric with the
pier pin. I can't find such an article - the only references I find to a
"bearing plate" are mounting arrangements for a thrust bearing.
Is this a drawing error?
Do I need to place something between the pier pin base assembly and the
concrete?
Can someone recommend a substitute?

I finally had concrete poured last week, so I'm gearing "up" for some fun!

Thanks,

Brian K1LI