The topic of adding guys to self supporting towers has been discussed a number of times on this reflector, but I am still not clear on exactly why it supposedly won't work. If I have figured crrectly
I can't follow your analysis, so here are some numbers for an HDX589 from my PE analysis: EIA-222-F 85 mph 3 second gust 71 mph fastest mile no ice leg compression 41538# base connection moment 80330
Rick I install a Trylon T-200 96ft like 9 years ago for a client who in that time he was in the need for 2 or maybe 3 at most wireless links using 60 cms dish antennas very light in weight 5
Richard was talking about self supporting towers, not self supporting crank up towers. Yes, the lift cable is a definite factor in any consideration of adding guys to a crank up. But I've never seen
That said, I would bet on the hoist cables as the failure point if guys I should have said that my original query was not aimed at crankup towers. I have no intention of adding guys to my HDX5106. B
Author: "Gary and Arlene Johnson" <qltfnish@omniglobal.net>
Date: Mon, 12 Aug 2013 19:30:32 -0500
Inquiring Minds Want To Know: Assuming one had a crank up tower made out of three 20 foot sections (nominally 50-55 feet fully extended), why would guying the bottom 20 foot piece of the tower be a b
For the simple case, what about the added downward force on the lift cable(s)? 73, Steve W1SRD The topic of adding guys to self supporting towers has been discussed a number of times on this reflecto
Too much crank up stuff on my brain :-). I know N6RK would know better than to guy a crank up.... de W1SRD WHAT lift cable? A self-supporting tower has none. For the simple case, what about the added
This is an age old tower talk question and I have yet to see a definitive answer. As a non-engineer, I think that if properly placed, guys would make for a stronger structure. Self-Supporting towers
Rick, It was my wrong assumption that crank ups were in the question. Guys on the mast by the prior owner of your HDX5106 tower - very interesting! I have a Trylon T200-80 on the ground which is rate
On 8/12/2013 5:06 PM, Richard Karlquist wrote: The topic of adding guys to self supporting towers has been discussed a number of times on this reflector, but I am still not clear on exactly why it su
On 8/12/13 11:28 PM, Roger (K8RI) wrote: On 8/12/2013 5:06 PM, Richard Karlquist wrote: The topic of adding guys to self supporting towers has been discussed a number of times on this reflector, but
The topic of adding guys to self supporting towers has been discussed a number of times on this reflector, but I am still not clear on exactly why it supposedly won't work. If I have figured correctl
discussed a number of times on this reflector, but I am still not clear on exactly why it supposedly won't work. If I have figured crrectly, the worse case compressive load on a leg at the bottom of
free standing tower, not an issue. How so? In a no wind static case, the guys add down force, some of which will appear on the diagonal cross braces. How much depends on the relative compression stif
(nominally 50-55 feet fully extended), why would guying the bottom 20 foot piece of the tower be a bad thing?? It would seem to an under-educated mind that it would strengthen the tower. Methinks th
Comments? BUT IMO if the guys have little or no tension on them, then they don't add appreciably to the compression on the legs but some of the wind forces are transferred from the legs to the guy w
I think you are both a little light on the downward pressure from the guy cables. 1/4 phillystran has 600# of pretension. cos(45)*600*3 = 1273# per each set of guys, assuming no wind. There is not ne
I like the slack guy idea but you must be aware that when the wind does blow and the guy(s) take tension that a compressive force is contributed by the guy to the tower. As always the greater the ang
How so? In a no wind static case, the guys add down force, some of which will appear on the diagonal cross braces. How much depends on the relative compression stiffness of the brace vs the verticals