[TowerTalk] Speaking of structure issues

[Blake Bowers]

You poured to Rohn Specs?  Rohn does not spec that kind of
soil, which is far from what Rohn does spec - "Normal Soil".

I can't even imagine building a tower in an old river bed, with
5 feet of spongy soil, without having a local engineer involved.


----- Original Message ----- 
From: "Pete Smith" <n4zr at contesting.com>
To: <towertalk at contesting.com>
Sent: Monday, January 16, 2006 7:43 AM
Subject: [TowerTalk] Speaking of structure issues


>I was out working at the base of my tower yesterday (97 feet of Rohn 25), 
>and was surprised to discover that the base concrete block - poured to Rohn 
>specs -  is visibly tilted.  Because I have a pier pin base, this isn't a 
>big concern - the hole in the base for the pier pin is more than large 
>enough to handle the misalignment - but I was wondering what would have 
>happened if I had used a rigid embedded base section.  Maybe the concrete 
>block wouldn't have tilted.
>
> The tower is in an old river bed, with about 5 feet of spongy topsoil, and 
> it gets pretty squishy nearby in the spring.  Fortunately, a guyed tower 
> base isn't called on to take much but vertical loads.
>
> 73, Pete N4ZR
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