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1. [TowerTalk] Complex Guy Question (score: 1): Author: "Wilson Lamb" <infomet@embarqmail.com>; Date: Tue, 10 May 2011 08:51:29 -0400; No expert here, but... The K7NV analysis is magnificent and really gives some basic understanding! I wish Rohn would publish some of the same stuff. I also wish they would make the pier pin option mo; /archives//html/Towertalk/2011-05/msg00121.html (8,468 bytes)
2. Re: [TowerTalk] Complex Guy Question (score: 1): Author: "Dick Green WC1M" <wc1m73@gmail.com>; Date: Wed, 11 May 2011 10:45:12 -0400; Regarding the pier pin base, I agree that in theory it's the way to go, and that's what I have on my 110' Rohn 55. However, I've often wondered if the Rohn flat-plate pier pin base used by most hams; /archives//html/Towertalk/2011-05/msg00137.html (9,894 bytes)
3. Re: [TowerTalk] Complex Guy Question (score: 1): Author: Pete Smith <n4zr@contesting.com>; Date: Wed, 11 May 2011 12:04:35 -0400; I think Dick has a good point. I've always assumed that it would not move until the last 5 percent of wind loading, and maybe not even then, given the rise in downward forces. I think if I had it to; /archives//html/Towertalk/2011-05/msg00138.html (12,124 bytes)
4. Re: [TowerTalk] Complex Guy Question (score: 1): Author: Steve Maki <lists@oakcom.org>; Date: Wed, 11 May 2011 15:36:33 -0400; Yes he does, and one which I've mentioned here in the past. I think that the more important feature of a pier pin base is the tilt freedom to keep the downward force on the legs equalized, rather tha; /archives//html/Towertalk/2011-05/msg00139.html (9,959 bytes)
5. Re: [TowerTalk] Complex Guy Question (score: 1): Author: Steve Maki <lists@oakcom.org>; Date: Wed, 11 May 2011 15:50:21 -0400; Commercial towers have no fancy thrust bearing. It's usually just a very heavy but small diameter plate that is just large enough to accept the angled in tower legs, which are welded to the plate in; /archives//html/Towertalk/2011-05/msg00140.html (8,500 bytes)
6. Re: [TowerTalk] Complex Guy Question (score: 1): Author: Grant Saviers <grants2@pacbell.net>; Date: Wed, 11 May 2011 18:22:44 -0700; One factor not mentioned is that it is unlikely a significant moment can be transmitted by the two plates in contact. One side of the plate will lift as soon as the base moment exceeds the downforce; /archives//html/Towertalk/2011-05/msg00142.html (12,490 bytes)

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