Hi everyone, I've been browsing the TowerTalk reflector archives for a while, to gather as much info as I can before installing a small Rohn 25 at a hilltop site. I just received my Rohn Consumer Pro
Ryan, Makes the head swim, eh? Welcome to the world of cookbook designs, and the notion that everything put in print is the gospel! It can be, when we understand it, and have all the information. The
50% anchor radius or 80% anchor radius - they're just different scenarios. You could have 30% or 120% too or anything inbetween. I don't know the engineering reason for the difference but as you poin
Hi, Steve. For the same guy tension, a 50% radius will put a greater downward force on the tower (equivalent to a heavier antenna if you neglect wind loading) and it will provide less lateral force a
I agree and I thought my comments reflected the recommendation to go with 80% rather than 50%. I was responding to his proposed installation specifically which is pretty small - not to *all* installa
Ryan, The 80% guy radius specification is designed to allow maximum loading on a tower at the rated maximum height with a reasonable guy radius. (For Rohn 25, 200 ft is the maximum rated height). One
List readers: Actually you can put the guys where you want within reason. You just have to account for the increased force developed in the guy as you move the anchor point closer to the tower base.
Another perspective on this question: If you examine the guying specs for a Rohn 48ft Foldover tower model FK2548 ypu will find a recommended guy distance of only 18 feet, or 37.5 percent of the towe
Gerald: Actually I don't think any of it is attributed to the fact it is 4-way guyed. A design condition would be with the wind load in line with one of the guys. In this case one guy is taking all t
Hi all, I agree with Hank. My first tower was Rohn-25G at 110'. The guys were about 45' from the base. 6'X8" screw in the ground anchors were used. 5/16 Ga. Power type guy cable was used with 12" tur
Actually, there is a 15% reduction in the worst case guy load using 4 way guying vs. 3 way. The worst case load with 3 way guying occurs when the wind is blowing parallel to one of the tower faces, 3