Drillers that can do it are all over the place... usually within a few hours of
one another depending upon the population base. The problem is that their
machines generally are much more expensive than a backhoe, so it usually
wouldn’t be cost effective, even if they’re located very close - unless they
own a truck mounted rig and can run right over. Usually around $450-600 per
hour port to port and they have to have a second truck bring the bits and
caissons if needed and depending upon the company, job, and crew, another
machine to move the bits.
Lots of experience with that sort of thing. I’ve been hiring them for years.
Best,
Matt
K0KB
> On Jan 20, 2018, at 2:05 PM, Clay Autery <KY5G@montac.com> wrote:
>
> My tower actually calls for a cylindrical hole...
> The hole should be engineered to support the load. Mine is 4 foot diameter x
> 8 foot deep.
> Depth is generally more important than area beyond footprint and decent
> overhang.
> Please forward the driller info to me... I haven't found one yet!!!
> And as of yet, I haven't found a mchine to rent.
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
> -------- Original message --------From: Richard Thorne <rthorne@rthorne.net>
> Date: 1/20/18 13:01 (GMT-06:00) To: Towertalk <towertalk@contesting.com>
> Subject: [TowerTalk] Square Hole or Round Hole for Self Supporter?
> I have an HDX-589. I'm in the planning stages for getting the tower
> installed.
>
> I ran across a driller yesterday that can drill the 10' deep hole to a
> diameter of 7' (87" to be exact).
>
> We have excellent soil here for self supporting towers, caliche. Digging
> by hand is out and using a back hoe would probably make an over size hole.
>
> Is there a reason not to use a cylinder vs a square hole?
>
> Rich - N5ZC
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