gents When installing free standing towers on ROCK, you have a few options. My buddy has a huge trylon, that is located on solid rock. Instead of messing about with jack hammers, he used TRYLON'S sug
Okay, I guess I'm going to end the discussion by sincerely thanking all who responded. The array of answers, here and privately, was impressive to say the least and ran the gamut from really helpful,
My QTH/property is on rock. In fact in many places the rock protrudes above the grass. We put up a 120 foot free-standing tower for a Jacobs wind turbine 11 years ago. After getting down as deep as w
I'd think that a wind turbine is a fairly hefty load.. and on a 120ft pole, too!.. just a bit more load than a 50 foot tower in a 50 mi/hr wind<grin>. That's similar to what they do around here in So
I based it upon my original decision to locate the tower where it is. Once we found rock and did the initial hole (such as it is), I decided it was not practical to continue to chip away rock to repl
Answer to question posed: I exceeded what the vendor of the Jacobs turbine and tower told me, and BTW he is not associated with the company. He said "sauna tubes" at the places where tower legs touch
I'm not a soils guy, but I'm pretty sure there is an actual definition for what "average soil" is from a foundation design standpoint. Probably something to do with density and resistance to movement
Probably "Sonotube" (a trade name for the big cardboard tubes used for the forms) http://www.sonotube.com/. _______________________________________________ ___________________________________________
I guess one could argue the other side of the coin. "You guys are over-engineering all of this. Just drill three 1" holes in the rock and epoxy the rebar or anchor bolts in. No concrete needed" I gue
in a situation like that only a real engineer knows for sure. Consult one and sleep well on windy nights. David Robbins K1TTT e-mail: mailto:k1ttt@arrl.net web: http://www.k1ttt.net AR-Cluster node: