In a message dated 8/15/2008 3:48:36 P.M. Pacific Daylight Time,
towertalk-request@contesting.com writes:
> Does anyone know a good source (s) (articles, websites) on the pros and
cons of guyed towers vs self supporting lattice towers?
Umm, don't know of anything like that myself.
Basically the cost of a tower is the cost of the steel. A self-supporting
tower needs lots more steel in it than a guyed tower that uses cheap,
lightweight guywire for support. Therefore, a self-supporting tower is
generally going
to be more expensive than a self-supporter. For example, a 96-foot
self-supporting Trylon weighs about 1200 pounds. 100' of Rohn 25G weighs about
400
pounds.
As far as excavation and concrete, the self-supporter is going to be
more expensive. A typical self-supporter needs 6-7 yards of concrete in the
base. A guyed tower (e.g. Rohn) only needs about 4 yards for the base and 3
anchors.
Either tower can be installed with a ginpole but a self-supporter is
easier and faster using a crane.
Guyed towers are much easier when it comes to a populated tower; e.g.
stacks of yagis, sidemounts, etc. It's tough to have a rotatable sidemount on
a
free-standing tower.
A guyed tower has a much larger footprint since the guys have to be out
80% or so of the tower heighth. A self-supporter base is something like
6'x6'.
I guess it depends on what you want the tower to do and what your
constraints are. Your most bang-for-the-buck is a guyed tower.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for hams
**************It's only a deal if it's where you want to go. Find your travel
deal here.
(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
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