[TowerTalk] AN Wireless tower

[Roger D Johnson]

Where do you guys find cinder block? I haven't seen one for over 50 years!

73, Roger

On 9/16/2012 7:19 PM, David Gilbert wrote:
>
> Sorry, but that's an old wives tale.  Concrete itself is porous as hell and 
> will pass moisture almost as easily as any cinder block. There is no way on 
> this earth that concrete will keep moisture away from the iron, but the 
> alkalinity of the concrete will indeed keep the iron from rusting and that's 
> why our bridges hold together and our towers don't fall over.
>
> 73,
> Dave   AB7E
>

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