[TowerTalk] TowerTalk Digest, Vol 31, Issue 118

[W0UN -- John Brosnahan]

At 12:20 PM 7/30/2005, you wrote:
>John, do you have a best method for knowing how the internal state of the
>legs will be?
>
>Thanks for the posting.
>
>73, George KR5C

That IS the problem!   You just can't tell for sure.   And I hate to risk my
life and limb not knowing.  There just isn't any sort of CHEAP non-destructive
testing that I know of.    You might make a coil around the leg and measure
its resonance and Q and then move it to the area of question and see if it is
the same.  If not then maybe the steel is flaking off on the inside.   But then
again maybe any change is just due to the proximity of the concrete.  I am
sure there are some ultrasound methods, etc.

Best thing I can suggest is to LOOK very closely to see if there is ANY sign
of problems on the other legs.  And I guess you can tap on them to see if
they sound any different.  Poor mans ultrasound!

--John