Gene, et al,
Thank you guys for the information. The tower position had to be located in
this area due to the village Building Inspector.
Originally, it was going at the end of the driveway. Anyway, the wood framing
has to remain. When the backhoe dug the hole
he created a massive creator that was 6' x 8' x 8'. It looked like a meteor
landed in the yard! The base only needed to be
5'x 5' x 6'. Therefore, I had to build the form that would support the force
the concrete is exerting on it; including
staking it to the ground to keep it from possibly floating up during the pour.
I have seen that before and what a huge mess
that created. Yes, I agree it would be better engineering to be able to remove
the form, but that is not an option at this
point.
Anthony - N2KI
30MDG - 1187
www.n2ki.com
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Gene Smar
Sent: Thursday, September 02, 2010 23:26
To: k2qmf@juno.com; n2ki@amsat.org
Cc: towertalk@contesting.com
Subject: Re: [TowerTalk] Pour Complete
Anthony:
FWIW - I just helped the daughter of a SK up the street from me locate
a buyer for her dad's crank-up tower. It was removed a couple of weeks ago.
The tower was a 72-footer witha KT-34XT atop it. The base was located only
a few feet from the house's block foundation - just like yours. I was in
the Ham's basement during the clean-out and saw no cracks in the walls from
undue forces from the tower base acting on the wall over the 30-plus years
the tower was in place.
I agree with Ted that it would have been better engineering to locate
the tower and its base some distance away from the house - typically chosen
as a length as far away from the house as the depth of the base's
foundation. The objective would be to create a wedge of dirt that went at a
45 degree angle from the bottom of the base to the house's foundation wall
at grade level. But you can also take some consolation from the fact that
my neighbor's house suffered no damage from his nearly-identical
installation. YMMV.
Regarding the wooden form - are you planning on removing it and then
filling in the void with compacted earth? That, too, would be better
engineering. When the wooden form decomposes, there will be a soft material
around the base of the foundation. A stiff wind could begin to tip the
tower and its foundation as there would be no firm material against which
the tower/foundation would push. But again, YMMV.
73 de
Gene Smar AD3F
----- Original Message -----
From: <k2qmf@juno.com>
To: <n2ki@amsat.org>
Cc: <towertalk@contesting.com>
Sent: Thursday, September 02, 2010 3:16 PM
Subject: Re: [TowerTalk] Pour Complete
> Hello Anthony,
>
> I am not an expert on tower installation but
> I see two things that "could" be a problem.
>
> First, they say to pour concrete into a hole against
> undisturbed soil without a wood frame!!
> Your hole sure has disturbed soil on all four sides...
>
> Second, It seems to be too close to the house.
> If you have a basement the tower base could push
> against the basement wall causing it to cave in...
>
> Again, I am no expert in this area. Just my personal observations.
>
> 73,
> Ted K2QMF
>
>
> On Thu, 2 Sep 2010 14:59:08 -0400 "Anthony J. Cioffi \(N2KI\)"
> <n2ki@amsat.org> writes:
>> Let the curing begin! All is done for now here. That had to be some
>> of the hardest work I have done in a long while. 8.5
>> cubic yards of 4000psi concrete. Next step is to put together the
>> tower sections. Probably over the weekend. More pictures
>> on Picasa.
>>
>>
> http://picasaweb.google.com/109109461434829776230/N2KISTowerInstallation?
> authkey=Gv1sRgCKjzp8rAo7jNzwE&feat=directlink
>>
>>
>>
>> Anthony - N2KI
>> 30MDG - 1187
>> www.n2ki.com
>>
>>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com
>> [mailto:towertalk-bounces@contesting.com] On Behalf Of Anthony J.
>> Cioffi (N2KI)
>> Sent: Thursday, September 02, 2010 06:09
>> To: Tower Talk
>> Subject: Re: [TowerTalk] concrete testing
>>
>> Thank you for the suggestions.
>>
>> I called Advanced Testing in my area and got some information.
>> First, I checked the trustworthiness of the concrete company.
>> That checked out. The technical person I spoke with had a lot
>> experience with concrete testing and curing. A 4" slump and
>> no more for this job. However, due to the very warm temperatures in
>> the north east, I should cover it with plastic to keep
>> the moisture from evaporating off the top.
>>
>> I will keep the group posted and post more pictures.
>>
>> Thanks.
>>
>> Anthony
>>
>>
>> -----Original Message-----
>> From: towertalk-bounces@contesting.com
>> [mailto:towertalk-bounces@contesting.com] On Behalf Of jimlux
>> Sent: Wednesday, September 01, 2010 09:30
>> To: Towertalk Reflector
>> Subject: [TowerTalk] concrete testing
>>
>> So you have your concrete delivered, test canisters filled. You
>> wait
>> 28-30 days and have the canister tested and Whoops, it fails the
>> test.
>> What happens next? I know that if it failed by a "little bit", most
>> of
>> us would just figure, heck, use as is, that's what design margin is
>> for.
>>
>> But realistically, say it was totally defective. Is it demolish the
>>
>> (huge) cube o' concrete and send a bill to concrete vendor time?
>> (I'm
>> assuming the delivery contract says that if they don't deliver the
>> right
>> material, they're responsible)
>> _______________________________________________
>>
>>
>>
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