[TowerTalk] Phillystran sizing and use

[K7LXC@aol.com]

In a message dated 09/08/2000 9:58:59 AM Pacific Daylight Time, ndavis@vt.edu 
writes:

> So, if I wanted to use Phillystran for the upper section of each guy (using 
>  EHS for the bottom section hedging against vandals, etc.), what size of 
>  Phillystran do I need?  

    3/16" EHS = HPTG4000

> I can not find anything that says which of the 5 
>  diameters of Phillystran stocked by Texas Towers I should use.  To get the 
>  same breaking strength per guy as 3/16 EHS, I would need to use the middle 
>  size of the 5.  Is that overkill?  

    Not if it's the right one.

>  What should I tension the guys to?  The  same 10% figure as in EHS?
>  
    Yes, 400# (10% of 4000# ultimate breaking strength). Determined most 
easily with a Loos Guy Wire Tensioner (http://www.championradio.com).

>  Or, at 40', is it going to be worth the hassle of using Phillystran at 
all???
> 
    Maybe. If you're going to have other antennas on the tower (wires, 
shunt-feed, side-mounted, etc.), it won't hurt. If you don't use it, you'll 
always wonder if everything's working as well if you would've used it. For 
the cost, I'd do it; that way you'll never wonder. 

Cheers,   Steve   K7LXC
Tower Tech

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