[TowerTalk] Square Hole or Round Hole for Self Supporter?
rcblumen at centurylink.net
Sat Jan 20 15:52:32 EST 2018
The design drawings call for a rectangular hole with a rectangular rebar cage. An 87” dia hole will be a LOT larger and greatly increase your volume of expensive concrete. I just finished my tower foundation with a back hoe that is very similar to your project. One can make a fairly decent hole with a backhoe and a helper to help guide the operator. Also, what are you going to do at the top; have a round or rectangular edge?
Finally, if you are going to have to pull a permit and not do it according to the engineering drawings, you might have a tough time with a county/city inspector who won’t understand why you deviated from the instructions.
Feel free to check out project I finished in our monthly newsletters starting with Aug 2017 at:
> On Jan 20, 2018, at 2:01 PM, Richard Thorne <rthorne at rthorne.net> wrote:
> 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
> TowerTalk mailing list
> TowerTalk at contesting.com
More information about the TowerTalk