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Re: [TowerTalk] Fire damage to 100' tower with Phillystran guys - help n

To: towertalk <towertalk@contesting.com>
Subject: Re: [TowerTalk] Fire damage to 100' tower with Phillystran guys - help needed
From: Jim Hoge <knowkode@verizon.net>
Reply-to: Jim Hoge <knowkode@verizon.net>
Date: Mon, 30 Jul 2012 11:02:53 -0700 (PDT)
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
It's cheap insurance to replace the guy and you won't be second guessing 
yourself down the road. Both heat and moisture are enemies of the core material 
in Phillystran. My other concern would be the guy anchor. A good inspection of 
that is in order too. 


gl,
Jim W5QM



________________________________
 From: "Ralston, William" <William.Ralston@viasat.com>
To: "towertalk@contesting.com" <towertalk@contesting.com> 
Sent: Monday, July 30, 2012 12:38 PM
Subject: [TowerTalk] Fire damage to 100' tower with Phillystran guys - help 
needed
 
A recent fire in my neighborhood burned a few houses and most of my 5 acres, 
but mostly spared my buildings (now brightly decorated with fire retardant and 
melted vinyl).  The tower is 100' with two levels of guys:  the Rohn catalog 
configuration except for the use of Phillystran HPTG6700I for the guys.  The 
lower portion of the guys (up to about 15 feet above ground) is ¼ EHS.  The 
tower base is fine, as the area around the base was well cleared; no damage to 
coax and equipment at base.

We are, however, concerned about one guy wire that passes over a stand of scrub 
oak.   There might be damage to the PVC coating on the Phillystran, but we 
can't see clearly from the ground even with binoculars, and will probably be 
bringing in a lift to get a closer look.

My questions are:

1.       Is there a point at which I need to worry about the steel EHS losing 
strength due to heat from the fire?

2.       If the PVC coating on the Phillystran is intact, do I need to worry 
about the underlying aramid (Kevlar) cable?

And then the big question... any referrals to someone that would be able to (1) 
inspect, and (2) replace/repair as necessary?  The tower is located 20 miles 
southwest of Salt Lake City, UT.

73 de William Ralston N7VM

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