[TowerTalk] temp guys

[LYN]

K7LXC@aol.com wrote:

>       Rohn specs allow 1.5 sq.ft. of 25G @ 70 MPH (20 psf wind force) for a
> height of free-standing 40 feet. The inference is that at little or no wind
> the tower has MORE than adequate ability to hold a climber or two during
> construction at that height.

Not being a mechanical analyst, I can't support the statement I'm
about to make, but it seems to me that rate of onset of load, rate
of reversal of applied force, and compression loads caused by
a climber or two bouncing around will all differ dramatically from
those induced by wind. Personally, I would not make the
assumption you suggest.

>       Yes, there is some 'pucker factor' involved. It's like climbing a mast -
> it's the ability to do these tasks that separate the 'professionals' from the
> 'amateurs'.

In my case, I do not believe that pucker factor is involved because I enjoy
climbing and working on towers, climbing mountains, and teaching
students to fly airplanes.  Now that last one can really be hazardous!
I have erected Rohn 25 to 200 feet and enjoyed every minute of it.
I just believe that there are times when a rational person will
analyze the job at hand and say "NO".


>        BTW, I "have safety belt - will travel" if anyone is looking for
> someone to do professional tower work. I've worked on over 125 amateur
> stations and many commercial sites.

Glad to hear that -- I may need someone within the next two yearswhen we move, to
accomplish tasks that are completely outside
my experience.

Cheers,
Lyn, W4WDN

There are old pilots, there are bold pilots, but there are very few
OLD BOLD pilots.


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