[TowerTalk] TowerTalk Digest, Vol 117, Issue 49

[Warren Wolff]

Notice that I did not include ALL of the previous posts.

Simple response to ground rods.  We have no topsoil or
significant undersoil here.  It was suggested on TowerTalk
a good while back that I try a hammer drill.  Asked my
electrician.  He shows up with his BOSCH, driving one rod
every 5 minutes through heavily rocked and packed material.
Worked here very fine. Electrician said he never met a
rock he hadn't conquered.

Warren; W7WY

Reference (and others)
Message: 1Date: Mon, 17 Sep 2012 21:37:33 -0400From: K8RI <K8RI-on-TowerTalk at tm.net>To: towertalk at contesting.comSubject: Re: [TowerTalk] Ground Rod Installing MachineMessage-ID: <5057D05D.5040309 at tm.net>Content-Type: text/plain; charset=ISO-8859-1; format=flowedOn 9/17/2012 4:00 PM, Art Trampler wrote:> Time to call the well-driller, drill a narrow well about 50' deep and put in a slurry of bentonite and drive'em in, couple them every 10' and keep going...>> Now how much would that 50' hole cost?About $2000 each when doing a bunch of them Maybe less, maybe more depending on the type of rock, but you don't need anything that deep.Create a Ufer ground either with concrete or in the stone.If the stone is Limestone, sand stone, or other "soft" rock a hammer drill with a masonry bit should work well.welded on the end of a rod. Drill oversize and pour bentonite to fill the gap.