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Re: [TowerTalk] Tower Mast Wind Loading

To: <towertalk@contesting.com>
Subject: Re: [TowerTalk] Tower Mast Wind Loading
From: "Ed Sawyer" <sawyered@earthlink.net>
Reply-to: sawyered@earthlink.net
Date: Wed, 6 Jul 2016 08:00:24 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
I have a 22 ft .25in wall steel molly mast.  It is very strong.  

 

I think you are asking the wrong question.  With only 4 ft in the tower and
12 ft above, with the torque translated by this very strong based overwhelm
the top of the tower connections - thrust bearing and rotor connection.

 

The usual rule of thumb is to have 50% of the length in the tower.  I have
10 ft of the 22 ft mast in the tower and the top antenna is 9 ft above the
tower.  The last 3 ft are for a truss.

 

Ed

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