Looks like first post came out very difficult to read so here it is again. I have a rather complex situation that certainly can benefit from the collective wisdom and experience of this reflector. My
Hi Rudy, My situation is similar, although different. I have an above ground base but without the water table issues. My problem was bedrock. The tower has been up for over 5 years without a problem,
Your foundation is pinned to the bedrock ... his isn't. It seems to me that the opportunity for N2WQ to properly engineer his installation may have come and gone. 73, Dave AB7E ______________________
As I pointed out - similar, but my issue was bedrock, his is water table. It's never too late.... 73, Joe WDØM _______________________________________________ ________________________________________
You have bedrock to help keep your base from settling, and your base is pinned to the bedrock to keep the lateral forces on the tower from tilting the base. He has a layer of gravel over a water tabl
I would not have worried about digging the hole and filling it full of concrete, any water in the hole would have been forced out and all would be good. Concrete does not care about water, concrete p
Not wanting to continue to re-state the obvious - my initial response stated there was a difference between our installations - would be nice if you would acknowledge that, rather than continue to pu
All the books I have read say that in cold climates, foundations must go below the frost line, or there will be "heaving". You are clearly in violation of this dictum. Your only hope is to prevent an
My usual I am not an engineer and don't rely on this info discalimer applies, but I have seen some comericial towers intalled on what appear to be large free standing concrete structures that don't a
I really appreciate all the feedback my post has generated. I think it will be helpful to add some further background. Under normal circumstances I would not trust a builder, but I have known this gu
I'm sorry if it looks like I'm picking a scab, but ... If there were concerns about the stability of the soil underneath (sand and water), how does putting a 2 foot layer of soft material (gravel) on
When my aunt and uncle installed an inground swimming pool at their house in New Orleans (below the level of Lake Ponchartrain) they basically had to build the pool in water. The water comes in so fa
One could put up a guyed tower on the base. With suitable guying (and anchors), even if it settles, it will still remain mostly upright. (I'm reminded of the Monty Python scene.. "When I first came
Reminds me of a commercial tower over near Melbourne, FL. The 400'+ tower was built on a former landfill. In the first few years, the tower sank several feet. The owner just kept tightening up the gu
My gut feeling is that your 90,000lb 11' x 11' base, sitting on top of the ground, is enough to hold up your 90' tower, if the concrete doesn't break, and you don't mind the tower shifting a bit due
And what does your gut feeling tell you about the fluidity of the soil under the base since you've never seen it? That's what will determine whether his tower tips over or not. It isn't even possible
Rudy, In 1912, German company built an 820 foot radio tower not far from you on an ocean front island in Tuckerton, NJ. They also had a high water table problem and built most of their tower and guy
Great stuff Frank. 73, Jim N9WW James Chaggaris President PowerOne Corp./PowerOne Environmental Corp. 1020 Cedar Avenue Suite 203 St. Charles, IL 60174 Phn: 630-443-6500 Fax: 630-443-6505 Cell: 630-6
I think David's lack of additional detail, plus focus on little stuff that doesn't matter so much, makes it sound dicier than it probably is. For instance, he says only 1.5' of the foundation is belo
Kevin: You are absolutely correct on this and I have been in e-mail contact with Rudy concerning his foundation and was cc'ing the list but it seems that those didn't get through. Richards post just