I did it with 4" Rigid Pipe. I used a screw on cap, and bolted a ring through the top I drilled holes in the base of the pipe and hammered rebar through at varying angles to prevent twist. It is only a 40' tower, but it has been working great.
On Sun, Sep 30, 2018 at 7:53 AM Forrest Christian (List Account) < li...@packetflux.com> wrote: > I'm as confused as he is.... > > I suspect you're talking about the amount of stress the tower will put on > the guy wire, not the initial tension. The install diagram for a 120FT 45G > shows the initial tension at 399# for the 3/16's and 665# for the 1/4. > Rounding, you're talking around 1465 lbs of initial tension. Assuming a > 1:10 typical ratio, this is probably going to be around 11,465 LBS of > pull. > > On Sat, Sep 29, 2018 at 9:37 PM Lewis Bergman <lewis.berg...@gmail.com> > wrote: > >> Read the whole post >> >> On Sat, Sep 29, 2018, 10:14 PM Craig House <cr...@totalhighspeed.net> >> wrote: >> >>> Lewis >>> What instructions do you have that says 80% of breaking strength? >>> Everything I have ever seen says 10% and the 3/16 wire is 4000#. I still >>> overtighten to about 20% to make it feel secure and it usually stretches >>> and after a few temp changes it ends up being around 15% of the tensile >>> strenghth? I have never tightened to 80%. That being said I still would >>> have the concerns about the pipe bending. I am going to back anchor the >>> pipe and I am going to put some Sonnet tube over it and put concrete up the >>> pole as well for at least 1/2 of the height of the pipe. I have used >>> beam's before as well but I think this pipe I got is actually more rigid >>> than the I beam I used in the past. >>> >>> ------------------------------ >>> *From: *"Lewis Bergman" <lewis.berg...@gmail.com> >>> *To: *"AnimalFarm Microwave Users Group" <af@af.afmug.com> >>> *Sent: *Saturday, September 29, 2018 8:18:47 PM >>> *Subject: *Re: [AFMUG] Anchor holes >>> >>> >>> You are supposed to tension guys at 80% of breaking tensil strength. On >>> 120 foot 45g that is likely a 1/4 inch guy on top. Maybe 3/16 on the other >>> 3. >>> That and probably 5600 pounds on the top guy and 4400 or so on the >>> others. That means there will be almost 19,000 pounds of pull on that guy >>> point. If you only want the tower for a few years, don't change anything. >>> If you want it longer, I would ditch the pipe, but some 12 inch I beam. Cut >>> the top at a 60 degree angle punch 4 holes. Leave the top flange long, bend >>> it over at 45 degrees and punch 2 holes on it. >>> But if course it is your show. If you give Rohn the info and what you >>> want to do they will give you an engineered solution in a week for free. >>> >>> On Sat, Sep 29, 2018, 6:55 PM Craig House <cr...@totalhighspeed.net> >>> wrote: >>> >>>> Planning on putting a sonnet tube over the outside with rebar and >>>> reinforcing at some on the outside as well >>>> >>>> Sent from my iPhone >>>> >>>> > On Sep 29, 2018, at 18:49, Seth Mattinen <se...@rollernet.us> wrote: >>>> > >>>> > On 9/29/18 4:29 PM, Craig House wrote: >>>> > > It’s 120 foot tall 45G Tower. I’ve already purchased and had the >>>> pipe >>>> > > welded for planning on putting it in the holes on Monday if I can >>>> get >>>> > > the holes dug >>>> > >>>> > >>>> > I guess if you're committed to pipe at least fill it with concrete. >>>> > >>>> > -- >>>> > AF mailing list >>>> > AF@af.afmug.com >>>> > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> -- >>>> AF mailing list >>>> AF@af.afmug.com >>>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>>> >>> >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >>> -- >>> AF mailing list >>> AF@af.afmug.com >>> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >>> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> > > > -- > *Forrest Christian* *CEO**, PacketFlux Technologies, Inc.* > Tel: 406-449-3345 | Address: 3577 Countryside Road, Helena, MT 59602 > forre...@imach.com | http://www.packetflux.com > <http://www.linkedin.com/in/fwchristian> <http://facebook.com/packetflux> > <http://twitter.com/@packetflux> > > -- > AF mailing list > AF@af.afmug.com > http://af.afmug.com/mailman/listinfo/af_af.afmug.com >
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