There used to be a good paper on K1TTT's web site that provided some of
the engineering basis for answering this question. I can't find it at
the moment but perhaps it is temporarily off as Dave reconstructs his
site. The K7NV guyed tower study is also an excellent source of info.
But I suspect that Steve's bottom line is correct - it may not make a
lot of difference, so long as you're "close." Probably most of us
aren't even close - I know I'm not. I've got a lot of turnbuckling and
big-gripping to do these next few days.
Thanks to everyone who responded to my query.
73, Pete N4ZR
The World Contest Station Database, updated daily at www.conteststations.com
The Reverse Beacon Network at http://reversebeacon.net, blog at
reversebeacon.blogspot.com,
spots at telnet.reversebeacon.net, port 7000
On 5/11/2011 6:57 AM, K7LXC@aol.com wrote:
>
> In a message dated 5/10/2011 6:52:28 P.M. Pacific Daylight Time,
> markrob@mindspring.com writes:
>
>> I read that if your guy anchors are out more than the prescribed min of
> 70%
> of the height then you can drop the 10% guy loading figure to around 8%,
> Would you care to comment on that?
>
>
> I haven't heard that before but I'm not an engineer so I don't
> know if that's true or not.
>
> Changing the guy tension two-per-cent from 10 to 8% may not even
> be relevant since most people don't take ambient temperature into account
> when tensioning guys. There is a scale of tensions per temperature - I think
> the figures stated for normal tension are for 70 degrees F or something
> similar. Cold wx guy shrinkage and hot wx stretch make a difference. And it
> might be tough to get accurate micro measurements anyway.
>
> Cheers,
> Steve K7LXC
> TOWER TECH
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