Thanks, Jim.
Those are comforting words. He's a foundation repair guy, so it seemed likely
he would be familiar with stabilizing stuff in this area.
73, Mike
On May 16, 2014, at 12:16 PM, Jim Lux <jimlux@earthlink.net> wrote:
> On 5/16/14, 8:44 AM, Mike Reublin NF4L wrote:
>> Thanks Dave. It's a crank-up and has a rebar cage that the tower bolts to.
>
> Then you don't need to do anything special for a Ufer.. the tower bolts to
> the cage which presumably has many feet of rebar in it, and that makes the
> connection to the concrete, which in turn contacts the culvert, which in turn
> contacts the soil surrounding the culvert.
>
> If there happened to be a void between concrete and culvert, the current
> density that point is low enough (since the lightning impulse has "spread"
> from the point of entry at the tower bolt), it won't boil the water in the
> void, so spalling or steam expansion isn't likely.
>
>
> And dropping $1000 of culvert into the hole is probably cheaper in materials
> and labor than trying to build forms, etc. Especially labor.. Same backhoe
> that digs the hole picks up the culvert from the truck and drops it in the
> hole, then puts the rebar in, and you're done.
>
>
> Sounds like a great way to solve the "soft soil and water table" thing.
> You've got a contractor who knows how to do stuff.
>
>
>>>>> -----Original Message-----
>>>>> From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
>>>>> Mike
>>>>> Reublin NF4L
>>>>> Sent: Friday, May 16, 2014 12:39
>>>>> To: towertalk reflector
>>>>> Subject: [TowerTalk] Tower base/Ufer ground
>>>>>
>>>>> I have a proposal from a contractor to pour the concrete into a piece of
>>>>> 48" diameter x 12' long piece of steel culvert capped on the bottom end
>>>>> with
>>>>> a plywood disc. Very high ground water is the reason.
>>>>>
>>>>> Will this constitute a Ufer ground?
>>>>>
>>>>> 73, Mike NF4L
>
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