I faced a similar problem - bedrock is just 6 inches under the soil on
my 5 acres. The subsurface rock is sandstone. I put up a 55 foot UST
TX-455 tower by placing about 4 feet of concrete on TOP of the bedrock,
anchored by 25 rods cemented into the bedrock. It's withstood 90 mph
gusts, and works fine. It's been there for almost 5 years.
Your conditions may be far different, but there still could be a
solution, as others have suggested. You can see how I did it at:
Click on Ham Radio, then Tower Project.
Good luck - hope to hear you on the air.
Joe Hannigan - WDØM
Pagosa Springs, CO
>> From: patrick jankowiak <firstname.lastname@example.org>
>> Sent: May 27, 2008 1:25 AM
>> To: email@example.com
>> Subject: [TowerTalk] new member with tower question
>> I'm new to the list, so I hope my first action of posting a question
>> here will be acceptable. first let me intro. myself a little.
>> It looks like I cannot economically put up my 56FT tower due to
>> "caliche" being 1-2FT under the soil. For those that don't know, "The
>> caliche reserves in the Llano Estacado in Texas can be used in the
>> manufacture of Portland cement; the caliche meets the chemical
>> composition requirements and has been used as a principal raw material
>> in Portland cement production in at least one Texas plant. Where the
>> calcium carbonate content is over 80 %, caliche can also be fired and
>> used as a source of lime in areas, which can then be used for soil
>> stabilization." I suppose this means I am on concrete for ground.
>> Anyway, you can't dig into it.
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