Re: [AFMUG] Rohn 25 on metal building

2018-04-03 Thread Lewis Bergman
The standard is 80%. You have to be careful that you don't exceed the compression specs of the tower and those bolts that resist down force. As you move guy anchors in you have to go up in guy size and tension. If you buy the sections new Rohn will engineer it for you free. You need to fill out the

Re: [AFMUG] Rohn 25 on metal building

2018-04-02 Thread Steve Jones
imho, 120 foot of 25g may be cost effective today but full of regret down the road, unless youre meticulous about inspecting and building to rohn spec. theyre super easy to twist, very prone to the bolt holes wallowing out, and if your drainage isnt right, they love to have blowouts. dont skimp on

Re: [AFMUG] Rohn 25 on metal building

2018-04-02 Thread Chuck Hogg
I've always done 80% of the height for the farthest distance of the guy wires. Regards, Chuck On Mon, Apr 2, 2018 at 9:55 PM, TJ Trout wrote: > So you guys convinced me to build on the dirt, much easier. Now what is > the smallest span of guys I can get away with? I want to do 12 sections of >

Re: [AFMUG] Rohn 25 on metal building

2018-04-02 Thread TJ Trout
So you guys convinced me to build on the dirt, much easier. Now what is the smallest span of guys I can get away with? I want to do 12 sections of 25G and I can guy it 3 or 4 times, I'm assuming 4 is better. I really want to keep the guys in as close as possible to save the valuable farming space I

Re: [AFMUG] Rohn 25 on metal building

2018-03-25 Thread Lewis Bergman
I would tell you that you are waisting money. 2 sections are going to cost you a lot less and be a better long term solution than mounting a tower on a building. You can use a house bracket near the top depending on your building design and start your guy calculations from that point. On Tue, Mar

Re: [AFMUG] Rohn 25 on metal building

2018-03-25 Thread Chris Fabien
If you intent to guy to the building and not to the ground, maybe 30or 40ft above the peak. That is also significant additional loading on the structure, be mindful of that. Can you just put it next to the building and guy into the ground? On Mar 20, 2018 10:22 PM, "TJ Trout" wrote: > I'm buildi

Re: [AFMUG] Rohn 25 on metal building

2018-03-25 Thread Jaime Solorza
At 100 ft . You usually need to be at three 120 degree points 80 ft. from tower. Jaime Solorza On Tue, Mar 20, 2018, 8:31 PM Jaime Solorza wrote: > Do you mean 4 guyed wires to the tower or 4 sets of 3 guyed wires at 120 > degrees points? > > Jaime Solorza > > On Tue, Mar 20, 2018, 8:22 PM TJ

Re: [AFMUG] Rohn 25 on metal building

2018-03-25 Thread Jaime Solorza
Do you mean 4 guyed wires to the tower or 4 sets of 3 guyed wires at 120 degrees points? Jaime Solorza On Tue, Mar 20, 2018, 8:22 PM TJ Trout wrote: > I'm building a 40x40 or possibly 50x60 steel building. I would like to > install a guyed 25g on the peak (about 20ft peak from ground level with

[AFMUG] Rohn 25 on metal building

2018-03-20 Thread TJ Trout
I'm building a 40x40 or possibly 50x60 steel building. I would like to install a guyed 25g on the peak (about 20ft peak from ground level with 16ft walls) If I guy off 4 times how high can I go? Any way to do 100ft or ten sections ? I'm assuming my guy span isn't far out enough. I know what'