[TowerTalk] Steel vs. Phillystran guys...

[StellarCAT]

My plans are to put up ~134' R45G with the top ~93' being above an RTS rotating 
tower rotor with guy rings... antennas will be stacked thus the tower will be heavily 
loaded [we are in a 70 MPH zone here in SE AZ]. 

I read somewhere, I think K7LXC or a link through Champion, a study on guying 
and what makes towers come down... this was several years ago. Guy stretch 
appeared to be a big problem with the tower eventually failing at the base due to 
the stretch. A comparison was made between steel and philly with philly stretching 
MUCH more - enough that to me it looked silly to consider it. 

However - since then has there been new information on the subject? Is using philly 
acceptable (I know the anecdotal comments will come with that one)... ? I will need 
to break up the guys if steel and this is a great deal of work so philly would be better 
from that aspect - but if it is indeed less capable of holding a heavily loaded tower 
(antennas along the top 90' length) then the effort on steel is worth it. 

Any more data in - scientific analysis to agree with or modify the original conclusions 
put forth on this subject?

thanks for your considered opinion. 

Gary K9RX