fundamental natural frequency
 

fundamental natural frequency
hello,
i am using national building code (canada) 1995 detailed procedure to determine the wind load on an antenna. however, i need to find the fundamental natural frequency of the antenna and have no clue. the antenna is a circular aluminum antenna 17ft long.

i got the following from chopra (1995) *dynamics of structures*, pp. 589-592.
to get the natural frequency in cycles/sec, divide the above result by 2pi.