As I pointed out - similar, but my issue was bedrock, his is water
table. It's never too late....
73,
Joe
WDØM
David Gilbert wrote:
> Your foundation is pinned to the bedrock ... his isn't.
>
> It seems to me that the opportunity for N2WQ to properly engineer his
> installation may have come and gone.
>
> 73,
> Dave AB7E
>
>
>
> Joe - WDØM wrote:
>
>> Hi Rudy,
>>
>> My situation is similar, although different. I have an above ground
>> base but without the water table issues. My problem was bedrock. The
>> tower has been up for over 5 years without a problem, and has withstood
>> 90 mph gusts that blew out the windows on my home.
>>
>> http://www.wd0m.com/
>>
>> Click on Ham Radio, then Tower Project. I hope this gives you some
>> confidence that it will work!
>>
>> 73,
>>
>> Joe
>> WDØM
>>
>>
>> Rudy Bakalov wrote:
>>
>>
>>> Looks like first post came out very difficult to read so here it is again.
>>>
>>> I have a rather complex situation that certainly can benefit from the
>>> collective wisdom and experience of this reflector.
>>>
>>> My property has a very high water table and as a result my builder and I
>>> decided to build the tower foundation mostly above ground. Specifically, we
>>> dug a hole, filled it with compacted gravel that is above the water table,
>>> covered the gravel with very thick sheets of plastic, and inserted 2'
>>> styrofoam boards around the base. Then we poured the concrete. As a
>>> result, only about 1.5' of the foundation is below ground, 3.5' are above.
>>> The overall dimensions are 10' x 10' x 5'.
>>>
>>> Now I wonder what are the additional engineering issues we need to address
>>> to make sure the foundation will last and the 90' AN Wireless tower will
>>> stay up. Currently, we have identified the following next steps:
>>>
>>> 1) Waterproof the concrete using silica based solutions, such as Penetron,
>>> Xypex, etc. as permanent solution against water getting into the foundation
>>>
>>> 2) Add extra waterproofing using tar/asphalt-like solutions to make sure we
>>> have extra protection should cracks emerge
>>>
>>> 3) Add styrofoam boards to prevent against freezing (it gets as cold as
>>> -25F in Ontario)
>>>
>>> 4) Backfill around the structure to create a mound that takes the rain and
>>> melting snow water away from the concrete. I have also proposed we layer
>>> more plastic sheets about a foot below the mound surface to make sure no
>>> water gets near the foundation
>>>
>>> Any further comments and suggestions will be greatly appreciated.
>>>
>>> Rudy N2WQ
>>>
>>> _______________________________________________
>>>
>>>
>>>
>>> _______________________________________________
>>> TowerTalk mailing list
>>> TowerTalk@contesting.com
>>> http://lists.contesting.com/mailman/listinfo/towertalk
>>>
>>>
>>>
>>>
>> _______________________________________________
>>
>>
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>>
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