Re: [smartBridges] OT: AP tower

Rick Kunze Tue, 04 Nov 2003 17:33:40 -0800

To clarify, that www.do-it-yourself-tower.com site was a fully engineered installation. I simply did the construction project myself. However, there were multiple inspections along the way and it was not a trivial undertaking. I actually added a bit of over-design myself. The tower is a 150' Rohn SSV purchased new from Rohn, complete with CA stamped engineering drawings. Every aspect was engineered by Rohn. I am very happy with the end result. Now if I can only figure out a way to keep the birds from "dropping" all over my building . . .

Don't attempt to do such a project without doing your homework. Your building codes and limits will be dependent on where you're going to erect the tower. Check with your local building inspector. Hope he likes you. ;)

Rk

At 03:22 PM 11/4/2003, you wrote:

Johns disclaimer at the beginning of the PDF is quite important... not
due to code, but due to liability.  Things like seismic calcs, concrete
strength, stress analysis, dynamics loads on structure (wind, thermal
etc..) must all be considered.  If not, and God forbid that tower
collapses and does something to someone or their property and you do not
have this documentation.. watch out.  You could be not just in for a
hell of a whitewash of your corporate funds, but be found PERSONALLY
liable and criminally negligent, which means your PERSONAL assets are
gone as well as spending some time inspecting the local prison for
wireless access.

AS a PE, I am fully aware of the liability that comes with engineering
design.  And since I am not a Structural Engineer, no way would I want
that liability.  In the "real" construction world, you go as far as
getting welders qualified, doing ND testing on welds, doing material
certifications (point of origin, composition etc..) concrete testing, and
a WHOLE BUNCH MORE, just so you can say "I did everything in my power to
ensure a safe and sound tower".  The courts will judge you based on
industry standards, and industry standard is to do all that stuff...

John, congrats, but you are braver then me man!

Scott


-----Original Message-----
From: "John Hokenson" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Date: Tue, 4 Nov 2003 14:59:41 -0800
Subject: Re: [smartBridges] OT: AP tower

> http://www.do-it-yourself-towers.com/
> ----- Original Message -----
> From: "Aaron Bennett" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, November 04, 2003 2:47 PM
> Subject: [smartBridges] OT: AP tower
>
>
> > Hey all,
> >
> > I can't say how informative this mailing list has been... I've been
> > holding my question for a while to get a better grip on everything.
> > Here's my deal:
> >
> > I am planning on beginning WISP operations in a fairly rural town in
> > Northern California. I have run some numbers and it all seems
> feasible,
> > but there are a number of variables I was curious if someone had more
> > information about. I've priced out a T1 line (which seems to be the
> > least expensive way to start, and I'm sure I'll be able to fill it
> with
> > enough subscribers to return investment.
> >
> > I've been searching for suitable locations for my main antenna (or at
> > least the one that I'll start with). Unfortunately, I have not found
> a
> > suitable structure for elevation, although I have found an excellent
> > location that a structure could be made/placed. The site is outside
> the
> > end of town, allowing me to broadcast in one direction. The bulk of
> all
> > subscribers would fall within .2 to 1.8 miles away.
> >
> > Because there is no structure existing, I was curious what someone
> may
> > use as a structure. I was considering finding an old farm windmill,
> and
> > placing an APPO + 90* sector on that. I am fortunate enough to have
> > power at this location, and a property less than 500 feet away that
> > could serve as my NOC.
> >
> > I figured that an old metal frame windmill would be a) fairly
> > inexpensive, b) good height (80'? Or so?) and c) easier to explain
> than
> > something looking like a cell tower or the such. Does anyone have
> > opinion on this? Also, if there's anyone in northern CA that has
> > experience with what legal limits are for structures, or what kind of
> > permits are necessary, I would be eternally grateful.
> >
> > Sorry for the somewhat OT post; I am, however, planning on using SB
> > equipment. I've played a little on a aBO and it seems suitable for
> what
> > I envision.
> >
> > --
> > Aaron Bennett
> > [EMAIL PROTECTED]
> >
> >
> > The PART-15.ORG smartBridges Discussion List
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Re: [smartBridges] OT: AP tower

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