We talk about guyed towers and their minimal needs for big heavy bases vs. free standing towers with enormous bases. I follow these arguments and basically agree with the "standard" prescriptions but
On 10/14/2014 12:31 PM, Patrick Greenlee wrote: We talk about guyed towers and their minimal needs for big heavy bases vs. free standing towers with enormous bases. I follow these arguments and basic
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Wed, 15 Oct 2014 03:08:40 -0400
On 10/15/2014 1:28 AM, Richard (Rick) Karlquist wrote: On 10/14/2014 12:31 PM, Patrick Greenlee wrote: We talk about guyed towers and their minimal needs for big heavy bases vs. free standing towers
This is not always correct. My Rohn 65G guy brackets http://www.dxengineering.com/parts/roh-ga65gd only attach to one leg. John KK9A <snip> Guys should NOT attach directly to the tower legs! This wea
can cause it to try to tip the base because the part of the tower below the guys bends in a strong wind. This is the fallacy involved in the idea of using just enough base to keep it from sinking in
To clarify: I didn't say not to have a fixed base on a guyed tower. Rather, the base has to be larger than just a 6 inch thick slab to keep it from sinking into the ground, unless a pier pin is used.
Actual modelling shows that guying can increase the load limits if properly applied. In the crank up tower case, UST specifically says its OK to guy the base section. The load on the base will be le
Can someone supply an executive summary? What about the case when you have a crank-up/tilt-over tower made to be free standing but you guy the bottom section and reduce the size/weight of the steel r
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Wed, 15 Oct 2014 23:46:30 -0400
DXE also has this disclaimer: "Keep your tower still with one of these ROHN Guy Bracket Assemblies. Guy bracket assemblies are used to properly attach guy lines and to distribute the forces correctly
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Thu, 16 Oct 2014 01:59:09 -0400
25 and 45G can be tilted up in substantial lengths with sufficient guying and tension. Depending on weight and antennas, several sections of 25 or 45G can be between the guys. 45G can be tilted up an
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Thu, 16 Oct 2014 02:49:16 -0400
After much repeated discussion on this forum over the years I asked a structural engineer about this, and he confirmed what you are saying - that basically a guy system could be designed for pretty m
Author: "Roger (K8RI) on TT" <K8RI-on-TowerTalk@tm.net>
Date: Thu, 16 Oct 2014 02:50:53 -0400
The short answer is, "It should work." 73, Roger. Patrick NJ5G can cause it to try to tip the base because the part of the tower below the guys bends in a strong wind. This is the fallacy involved in
After much repeated discussion on this forum over the years I asked a structural engineer about this, and he confirmed what you are saying - that basically a guy system could be designed for pretty
These discussions are interesting but the bottom line appears to be Paralysis from Analysis in many cases. Everything you do is a risk. Use a little common sense and do something! About a decade ago
I think that the concern (on towertalk) is that guying adds compression to the tower legs. All of the self supporting towers that I have seen have stronger legs than equivalent guyed towers, at least
I'm curious, Rick, if your engineer addressed this question: to what extent does the warning to not have a fixed base on a guyed tower (use a pier pin instead) apply to the question of guying a self-
Roger, Thank you so much for your succinct reply that eschewed the terms compression, tension, shear, and column. Stan, your call says it well "GO!" I have a two section crank-up tower of unknown ori
On 10/16/14, 5:30 AM, john@kk9a.com wrote: I think that the concern (on towertalk) is that guying adds compression to the tower legs. All of the self supporting towers that I have seen have stronger
On 10/16/2014 5:30 AM, john@kk9a.com wrote: I think that the concern (on towertalk) is that guying adds compression to the tower legs. All of the self supporting towers that I have seen have stronger
Right, John, so out of consideration for the wisdom of your comments and oodles of folks saying NEVER guy a free standing tower, I only guyed the bottom section. Somehow I'm reminded of Woody Allen's