BTW, there are Bell System Practices (call BPS's)
BSPs And they are on Google.
73
Jim W7RY
-----Original Message-----
From: n0tt1@juno.com
Sent: Tuesday, June 03, 2014 7:01 PM
To: n7qnm-lists@nwlink.com ; TowerTalk@contesting.com
Subject: Re: [TowerTalk] Utility Pole as Beam Support
Lucky you to get such a pole for free!!! :D)
Use NO concrete! The pole will shrink a little over time
and there will be a crack to let water in and stay there,
accelerating the rotting of your pole! Concrete will also
prevent you from making below ground periodic inspections
per the reference suggested below.
Backfill with dirt or use some fine-graded sand that you "water in"
to fill all the voids.
BTW, there are Bell System Practices (call BPS's) that *may*
be posted on the web that describes the proper install, loading, etc
of wood poles. Google. If not, maybe a dedicated Telco ham
just might have a copy in his personal library!
I'd be tempted to rig the beam and mast with a "tilt-over" feature
using a small winch to make it a no-climb antenna structure. A
"cradle" would prevent side-to-side movement at the top.
Now back to my workbench. :D)
73,
Charlie, N0TT
On Tue, 3 Jun 2014 15:15:05 -0700 "Clay Jackson" <n7qnm-lists@nwlink.com>
writes:
I just "inherited" a 50' (out of the ground, 6' buried) utility pole
(crew
was taking it out and told me that if I'd drag it off the road, I
could have
it).
I'm thinking about trying to find a rotator and tri-bander to put on
top of
it; but, having no experience with such a setup; I thought I'd seek
some
advice first.
So, a few questions.
I'm sure someone has done this before; would you be able to share
your
experiences?
I have a friend who can weld anything from steel to aluminum and so
I think
we can fab up a mount for the rotor.
Beyond that, thoughts would be appreciated on things like:
Wind loading - how many sq ft (if any) is reasonable before I have
to use
guys (for my HyGain AV18HT the building dept made me engineer the
base for
90K winds, WITH a "wet stamped" drawing)?
Base - is a 6' hole filled with dirt "good enough" or do I need
something
more (if more, would a 6' hole with concrete be sufficient)?
Thanks in advance!
Clay
N7QNM
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