[TowerTalk] Tower Base Removal

[Roger (K8RI) on TT]

On 1/17/2014 7:09 PM, David Gilbert wrote:
>
> I suspect that it would be very difficult to remove the old foundation 
> with a crane.  You're looking at roughly 3 cubic yards of concrete 
> weighing roughly 10,000 pounds (not to mention whatever drag/suction 
> there might be), and I can't imagine the tower base stubs being enough 
> to lift that sucker out of the ground even if you thought it would 
> hold together since it doesn't have any rebar in it.  If it needs to 
> come out I think your only recourse is to somehow break it up ... 
> jackhammer, expansion goop (don't remember what it's called), or 
> dynamite.
>

You have to drill holes for (It's a type of clay that expands with 
moisture...I forgot the name as well)    Dynamite used like that takes 
experience (if you were serious) and what's called a powder license) 
which is difficult to get.  Lots of packing on top with 1/4 sticks.  I 
used a lot on the farm 50 years ago, which I still own and I doubt I 
could even get a license now days. Course I have no need for one.

73

Roger (K8RI)


> Good luck es 73,
> Dave   AB7E
>
>
>
>
> On 1/17/2014 3:38 PM, Mike VE3YF wrote:
>> Hi:
>> I need to have a hole for my new tower 6' x 6' x 7.5' deep. Due to 
>> limited lot size that I live in, and mainly to keep peace in the 
>> family, I am looking at removing my old tower base 4' x 4' x 5' deep 
>> and it contains no re-bar, just tower base stubs. I can't remember 
>> what grade of concrete it is, but it is about 14 years old. I am 
>> limited to 2 types of removal, crane and Armstrong method. The crane 
>> company won't make any guarantee's they can complete the job due to 
>> complications etc, and want a hefty payment up front. I am now 
>> looking at having a young guy come by and use a Jackhammer to do the 
>> job.
>> Has anyone tried demolishing their old tower base and how long did it 
>> take any problems etc. Since this undertaking is new to me I am open 
>> to suggestions and or comments and hopefully some good suggestions.
>>
>> Thanks...
>>
>>
>> 73 De Mike
>> VE3YF
>>
>> http://www.ve3yf.com/
>>
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