Greetings! Every amateur tower I have seen around here so far uses screw anchors. Certainly they are easier to use than constructing the concrete types. However, being the curious, cautious type, esp
Yikes, Mark, you better check your ROHN catalog and obtain a copy of ANSI/TIA/EIA-222-F-1996 Per my 1991 ROHN catalog, for 110 mph basic wind (no ice) your 110 ft of 25G isn't even on the charts! 100
Mark; First , go to www.championradio.com & order a Rohn Tower catalog.Rohn sez guy anchors are to be 80% of tower height out from base of tower. Your 110 footer with proposed anchors at 50 ft. out i
Actually York county is only an 85 MPH windspeed zone but it is within 100 miles of hurricane oceanline so I think that the 110 feet and 8 sq.ft. of wind loading is reasonable. I don't discourage any
Yes, I have a copy of the Rohn catalog and have been studying it. Yes, I have been looking at the forces. Thanks to all who have already responded so far. Reading this reflector has got me digging in
Reply to the message of Wednesday July 1, 1998 11:15 -0400 -- Sure, Tom, the figures I posted came right off of the A.B. Chance Co. Commercial Anchors Distributor Price Sheet, page 1, bulletin # HW-3
Not sure if you are serious? But if you are, I think you are concerned about the wrong issue. Look at the Rohn catalog for 25G. At 110 mph Rohn only recommends a maximum height of 100 ft, with 7.4 sq
Your guy anchors should be at least as strong as the guy wire. Remember that they stated pull out force. If an anchor pulls out even part way the tower could be loose enough to fall. Typically a towe
"If an anchor pulls out even part way the tower could be loose enough to fall. " Gale N8GS ....................... HUH? Please explain "loose enough to fall". I don't believe a few inches of pullout
W1EVT told me he decided to install insulators in one of his 140 ft Rohn 25 towers to make a 160M elevated GP. They had to loosen the upper guys to where they were almost hanging along the tower befo
My understanding was they slackened them equally at each level. N4KG YES, but NOT to the point of failure. I had 2 trees fall on one of my guys after a tornado. The top of the 130 ft tower was arched
<< W1EVT told me he decided to install insulators in one of his 140 ft Rohn 25 towers to make a 160M elevated GP. They had to loosen the upper guys to where they were almost hanging along the tower b
The slack that is created then lets the tower slam around until something breaks or collapses. Every time the tower bangs into that loose guy wire it disipates its kenetic energy as well as the wind
I need some help with this one. Simple math, assumming the guys were at 45 degrees would indicate they were in the 190' range. Logically, it seems as if for example, 5' of sag was allowed in the upp
Hi Mark, There is another option you did not mention in your original post, above. You can get earth anchors that need no concrete and are not installed by screwing them in. This is what I use on my