i have A hg54hd that says it needs to be 6' deep 36" dia hole if you got rock i
would stop here and just do what others have done bore several holes and epoxy
anchors in the rock then pour your cement in the hole be there long after your
1239 West Till Rd
Fort Wayne, IN 46825
> From: firstname.lastname@example.org
> Date: Fri, 12 Feb 2010 08:53:30 -0600
> To: TowerTalk@contesting.com
> Subject: [TowerTalk] tower installation HG52SS
> Guys, I'm needing some help here.
> I am installing a HG52SS about 16 miles north of San Antonio in an
> area that is nearly all solid rock and I have two sets of factory
> specs on installation instructions from HyGain. One says (and I'm
> going from memory here, but I'm pretty sure I am correct) 30X30X42"
> for the hole and the other says 42"X42"X5.5 feet for the hole. The
> issue is that under an inch or so of soil here it is virtually all
> solid rock. We are now down about 3 1/2 feet into solid rock on all
> four sides, and it has required a large jackhammer and many hours to
> get there. Assuming the base hole is to be designed for both
> compressive and lateral movement, there is no way it is going
> anywhere, either way.
> This location is where I plan to live the remainder of my life, so I
> want it right. The tower will have a 2 el quad on it, and likely
> nothing every bigger than a 3 or maybe 4 el monobander as I have never
> owned a commercial antenna and have always built my own. With it being
> a crank-up, one antenna at a time (especially the 2 el quad) is
> sufficient for me.
> My question is: Is this sufficient, considering the ground materials?
> I am highly considering the hole as is, wth a pad one to two feet tall
> around it above ground and tied into the factory rebar base (which I
> will have to cut down and slightly re-do in order to make it fit the
> current hole). With a sufficiently tied-in top pad, the tower cannot
> move in any direction as the above ground part would try to push down
> onto the rock around it, which it cannot do (as the rock 1" and less
> underground is solid).
> An engineer is out of the questions as I am an average guy, teaching
> college for what often feels like minimum wage. I am also at least 16
> miles form the nearest possible engineer which would add to the cost
> Again, this is an amateur tower installation. The load will never be a
> lot as the tower is not rated for a lot of load. It cranks up and
> down, and I monitor the weather here, so it would be lowered when
> conditions suggested that it would be prudent.
> I could sure use some opinions.
> Michael Goins, k5wmg
> Pipe Creek, Texas
> Fast cars, slow boats, big dogs, and summers off to write
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