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 their web form.
I would be worried about putting your load on a RG25 that close to a building. That makes it a class 1 which means it will damage people or property if it fails. On Mon, Apr 2, 2018, 11:52 PM Steve Jones <[email protected]> wrote: > 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 the guy brackets and just loop the leg, thats effectively > installing a saw. im personally terrified of 25g over 50 foot, its so cheap > people skimp on both upfront build and maintenance. I know this, i put in > enough of them incorrectly before i knew better. there are margins in the > spec, but thats for your safety. > calculate out the value of the farmland you lose over the anticipated life > of the tower, you might find you have alot more budget for an appropriate > self supporter > > On Mon, Apr 2, 2018 at 10:53 PM, Chuck Hogg <[email protected]> wrote: > >> 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 <[email protected]> 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 >>> 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 have, so what is the guy span from the tower base that would be >>> recommended ? "how low can i go?" (without making any safety issues, this >>> tower will only have 4 sectors and a 2ft dish at 40ft). >>> >>> Thanks, >>> >>> TJ >>> >>> On Sun, Mar 25, 2018 at 3:32 AM, Lewis Bergman <[email protected]> >>> wrote: >>> >>>> 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 20, 2018, 9:22 PM TJ Trout <[email protected]> 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 >>>>> 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's on the drawings but I am looking for some real world >>>>> feedback.... >>>>> >>>>> Thank you very much >>>>> >>>>> TJ >>>>> >>>> >>> >> >
