Mike, if you look in the phone book for a geotechnical engineer you will probably find what you are looking for. A geotechnical engineer will tell you how to prepare the soil. A structural engineer w
TIA-222 has very little to say about the tower foundations except to say that a geotechnical report is required and frost depth is required. It is a standard used to calculate the loading conditions
As for the utilities usually the municipality doesn't inspect their installations as they are self regulating. The "screw anchors" ie "helical piers" are installed to a certain torque which the softw
You wouldnt want to only rely on helical piers for a free standing tower. If its a guyed tower the guys resist nearly all of the lateral load so the base only has to support the dead weight of the to
It all depends on the forces involved. As a general rule an anchor is good at keeping something from sliding around but if the bolt/anchor system could be subjected to pulling out you are better off
Ken, Depending on where you live (how dry the soil is, what type of soil), and how much you expect the new foundation to cost you may save money hiring an engineer to design your new foundation. If y
If it's a guyed tower then go for it! If it's a self supporting tower here is my answer: Yes you can ... kind of, depending on how you have the old bolts in place. If they are just cast into the conc
You are going to need to get a structural engineer and a geotechnical engineer involved. Its very possible to do this, it won't be cheap, but done incorrectly you could cause some severe damage to yo
I would ask your friend where he got his civil engineering degree. I would be interested to know. Bad, bad, bad idea, unless you know what you are doing (he doesn't). Doing this could likely turn 400
Bryan,Not sure were you are getting your information from but an HDBX48 but looking at the spec's on the tower from Rohn it handles more than under 1sq foot at 90mph. Why would anyone put one up if t
It is such a minimal intrusion I don't even design for it when I design a foundation. Really the outside edges of the concrete and the embedded steel carry almost all of the load from a tower so the
I have not heard of this concrete ground before. Is it made with conductive concrete? Best regards - Brian Carling AF4K Crystals Co. 117 Sterling Pine St. Sanford, FL 32773 Tel: +USA 321-262-5471 ___
910 micro Henry sounds like a very useful loading coil to me!! I have had no difficulty using a ground rod as a counterpoise to my vertical. In fact it's done extremely well. I added two radios becau
Aaargh! Siri strikes again! Best regards - Brian Carling AF4K Crystals Co. 117 Sterling Pine St. Sanford, FL 32773 Tel: +USA 321-262-5471 _______________________________________________ _____________
My 5BTV is like the Bumble Bee that defies 100 years of aviation theory that says it can't fly. Of course a pair of 3500ZGs can help with that. It was an old recommendation from Wayne Green. Best reg
The advice varies about this considerably. This week is the first time I've even heard of UF ER or conductive concrete! The professional experts that I know recommend putting a 20 to 30 foot ground r
So far I am not convinced about using concrete. I'm going to do some resistance testing on the concrete in my yard. Best regards - Brian Carling AF4K Crystals Co. 117 Sterling Pine St. Sanford, FL 32
I suspect it's not as conductive as some may have us think... Best regards - Brian Carling AF4K Crystals Co. 117 Sterling Pine St. Sanford, FL 32773 Tel: +USA 321-262-5471 ___________________________
So the text books say.... However some of this is counter-intuitive and very counter-empirical. Best regards - Brian AF4K _______________________________________________ _____________________________
I did mention, it's a 5BTV that breaks all the rules. I love it. It outperforms most other antennas I've ever used. Must be the wonderfully wet Florida soil or something! Best regards - Brian Carling