I am using a pier pin base because that is what my county requires. When
looking at Rohn's manuals and drawings a tower section buried in the concrete
is used for a self supporting tower max height 40'. Rohns manual for guyed
towers only shows a pier pin base, therefore the county will not allow me to
use the tower section in the base. I argued that the foindation was stronger
but a no go. I must use what the county will sign off on.
73 NR6M
ex: KF7NMD
Sincerely,
Rex Turvin
www.nr6m.com
________________________________
From: Ray Benny <rayn6vr@cableone.net>
To: Mark Robinson <markrob@mindspring.com>
Cc: turvin2009@yahoo.com
Sent: Sunday, August 18, 2013 1:54 PM
Subject: Re: [TowerTalk] Rohn 25G
Rex,
I am wondering why you are using the pier base? I believe that unless you are
going really high it not necessary. In most installations that I have heard or
know of, the guys just bury a 4 - 5 ft piece of Rohn 26G in concrete and build
from there.
Ray,
N6VR
On Sun, Aug 18, 2013 at 1:48 PM, Mark Robinson <markrob@mindspring.com> wrote:
I thought Rohn 25 should be guyed every 20 feet. If you are not using a wall
bracket then I would install 3 sets of guys.
Mark N1UK
----- Original Message ----- From: <K7LXC@aol.com>
To: <towertalk@contesting.com>; <turvin2009@yahoo.com>
Sent: Sunday, 18 August, 2013 1:58 PM
Subject: Re: [TowerTalk] Rohn 25G
I am a newbie. I am putting up a 60' Rohn 25G with 2 sets of guys.
My question concerns the baseplate. The baseplate only uses a pier pin
to hold it in place. It seems to me that this would allow the base plate to
move.
Where would it move to?
Pier pins are typically used with bigger, heavier towers because it
more or less equalizes the leg stresses. In your case I'd suggest just
burying some of the bottom section in concrete. It's much easier to erect with
the bottom section locked in. With a pier pin, you'll have to use temporary
guying to get it erected.
If your base is already poured, I'd recommend bolting the baseplate to
the base. (Use a rotary hammer and epoxy to set the bolts.)
For a newbie, I don't recommend messing with temporary guys. You need
solid rigging skills and the right equipment to do that safely. And people
still get hurt by using them. Set it in concrete.
The 1st set of guys wires go at 28'
What is the safest method for installing the 10' sections prior to having
the 1st set of guys in place? I am not using a crane. I am using a gin
pole. I want to make sure that it does not fall over while I am the process of
getting to the height of where the 1st guys go.
See comments above. If you're going to proceed with temporary guys,
use some of your precut guys for temps since ropes are stretchy. A comealong,
guy grip, nylon slings and some carabiners or shackles will be very
useful. ALL of this is covered in my UP THE TOWER book which I strongly suggest
you read. (Available from _www.championradio.com_
(http://www.championradio.com) )
Cheers,
Steve K7LXC
TOWER TECH
and
Champion Radio Products
Cell: 206-890-4188
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