[TowerTalk] US Towers and wind Loading Capacity

[Michael Hatzakis, Jr]

Ok, mathemeticians and engineers out theree.. I need some help

    Have an MA-550 55' tower.  I have a little over 7 sqr feet of antenna.  A Steppir (6sqr ft), a 40m D40 cushcraft dipole (1sqr ft) and a 2/440 verticle (<0.25sqr fet).  

   The The wind load capacity of the MA-550 at 50mph is a little more than 10 sqr feet of antenna and at 80mph it is around 6sqr feet.  This is based on the antenna being around foot or so above the top of the tower.  If I use their 20ft reinforced steel mast and put the 3 element Steppir at 10 feet above the top of the tower and the D40 at the top, at 20 feet above.  What does that do to it's wind loading capacity?

Michael


Michael Hatzakis, Jr MD 
Physiatrist, Treating Individuals with Neuromuscular Disabilities 
Consultant, Information Technology Based Health Care Solutions


---------------------------------
Do you Yahoo!?
Yahoo! News - Today's headlines