[TowerTalk] polyrod

[Michael Tope]

I don't know if Kurt's analysis took this into account, Tom. It would
interesting to see where the break even point occurs between the
effect of the catenary in the insulated steel span and effect of the higher
tensile modulus in the composite guy span. I am CC:ing Kurt on
this message, maybe he can enlighten us.

73 de Mike, W4EF.......................

----- Original Message ----- 
From: "Tom Rauch" <w8ji at contesting.com>
Subject: Re: [TowerTalk] polyrod


>> If you look at Kurt's tower study (you need to read
>> down toward the end to see the phylistran case) you
>> can see that the additional stretchiness of composite
>> guys can bite you if the base of the guyed tower is
>> over-constrained (e.g. 3 legged rigid mounting). With
>> a pier pin, it doesn't matters as the tower just leans a
>> little more in the wind when the composite guys are
>> used.
>
> With all the insulators and LONG guy lines on my towers the
> guy sag is so deep the towers move a heck of a lot more than
> towers I've had with Phylistran guys. You can shake 'em and
> clearly feel the difference.
>
> 73 Tom
>
>
>