AFAIK, manufacturers reccomend two inches of gravel at bottom of the base
to drain water from tower legs.
73, Mirko, S57AD
2012/9/17 Frank <frankkamp@att.net>
> R. Morris wrote:
>
> On 09/17/2012 09:10 AM, Frank wrote:
>>
>> I fail to see why a ground is needed at all. Surely the lower two feet
>>> of tower is firmly embedded in dirt with the concrete anchor above that.
>>>
>>
>> You may want to look at some tower base diagrams. Never have I seen any
>> suggesting "two feet" in dirt.
>>
>> That is because they are doing it wrong.
>
> Ever wonder what happens to the rain water that collects in the tower legs?
>
> Mine drains into the soil. If you block the ends of the tower legs with
> concrete, the rainwater rots your tower legs from the inside out. My tower
> has been up since 1976 with no sign of corrosion.
>
> Maybe they just want to sell ground rods and cad welding equipment and
> tower sections.
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