I always set my tower base into concrete. I dig a 4' deep hole, that is 2"
diameter. I put 4"of sand first, then 6" of gravel into the hole and then
insert the base. This allows for moisture drainage for the tower legs..so
they won't burst from frozen water build up. I Pour concrete into the hole
around the base section, until it reaches ground level. Then I mount a 6"
form(aluminum flashing) at ground level, around the exposed tower section,
and continue my pour. The raised concrete level keeps the tower legs out of
contact with the ground. This method helps to retard rust where the tower
legs come in contact with the concrete, by raising the exposed tower above
the dirt..easy to check for rusted or unstable legs..All tower installations
should always be installed according to manufacturers specs..Don't take
short cuts..that's how we die on towers.
73, Gary, N5BI ..
----- Original Message -----
From: "Robert Mcgraw" <rmcgraw@blomand.net>
To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Sent: Monday, February 11, 2013 6:08 PM
Subject: [Bulk] Re: [TenTec] Rohn 25G; hinged bases
Please read Rohn installation documents. As a tower moves there is
uplifting of the legs on the upwind side and a downward force on the
downwind side.
Not having the correct concrete pier at the base is a very dangerous
situation.
73
Bob, K4TAX
roger
i dont know where this came from but a ham friend of mine did use a house
bracket and a ground mount i took it down for him it wasnt in concrete
you really dont need it. i have 1 100ft tower guyed tower strait in the
ground no concrete and another 120ft same deal of course they are guyed
very well.
those towers have now been up 15 years and no problems.
by the way he had a 7 el. thunderbird on top of it plus a 2 mtr ant. so
dont be afraid. if you need me just drop a note i can advise.
all things are possible in Christ Jesus our savior
--- On Sat, 2/9/13, Roger Rippy <svtincup@yahoo.com> wrote:
From: Roger Rippy <svtincup@yahoo.com>
Subject: [TenTec] Rohn 25G; hinged bases
To: "TenTec@contesting.com" <TenTec@contesting.com>
Date: Saturday, February 9, 2013, 1:29 PM
Thanks for the comments regarding hinged bases and lifting towers with
Rohn 25G; especially those
who took the time to respond off-line with their experiences, pictures,
and suggestions. It was
great that WA7U even offered to help climb the tower if necessary!!
Thanks to these comments
I have decided that I will stick with Plan A and order the free standing
(non-hinged) tower kit
from Hill Communications. I do not need a wobbly tower; I do not want to
use guys on a short
tower (35'); and I do not want to bracket the tower to the house. So now
comes the fun part....
Hi Hi 73s W7RIP Roger Rippy Bozeman, Montana
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