In a message dated 97-05-28 12:42:42 EDT, JC_Smith@designlink.com (JC Smith)
writes:
> In your reply to Dick you say that a crank up tower can make the permit
> process
> more difficult. I'm wondering why? In my community they are looked on as
> no
> different than a fixed tower at their maximum height, but in some areas I
> know
> they make it easier to put up a larger tower (with the restriction that
they
> be
> retracted when not in use). We have a neighboring community that almost
> REQUIRES crank ups. They have a 30' height restriction for the tower when
> it's
> not in use, but no restriction on the maximum extended height when it is
in
> use. (One guy put a packet cluster antenna on top of his HF Yagis. It's
"
> in
> use" 24 hours every day.)
Since you asked, most times obtaining a building permit entails having
stamped PE drawings in your document package. Crank-ups are mostly rated at
50 MPH where the minimum TIA-222 wind speed is 70 MPH. UBC and other building
codes are generally in the same ballpark. Also, the crank-up drawings are
only PE stamped in their state of manufacture; you need a local PE to stamp
your local drawings.
So you wind up having to present engineering data for a down-rated
tower and come up with a wet PE stamp as well. Sometimes local building
departments will accept the manufacturer's drawings, but most times they
won't.
Building permit requirements are a lot different than the kind of
zoning conditions that you enumerated. Once you conform to the zoning, then
you can apply for your permit. The PRB-1 and other visible tower fights have
more to do with zoning and restrictions than with building permit matters.
73, Steve K7LXC
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