[TowerTalk] [MWA] OH8X 80-160 monster tower collapses

[Cqtestk4xs at aol.com]

Another reason to keep the tension on those guy wires at specified  values. 
 You keep them sloppy and loose you get those oscillations.  I  visited a 
station in the 2000s with a rotating tower and was amazed how loose  the guys 
were.  Several years later that tower came down in a  storm.
 
Bill K4XS
 
 
In a message dated 12/10/2013 1:46:18 P.M. Coordinated Universal Tim,  
jimlux at earthlink.net writes:

The  Tacoma Narrows bridge did not fail because it wasn't strong enough. 
It  failed because it wasn't *stiff* enough and the design had 
significant  wind induced torsional loads.  One might say that the "Q" 
was too  high, although the aerodynamic design was also such that the 
wind excited  the oscillation in the first  place.