Remember that he is in a hurricane prone area. He is south of the
Florida Keys and I believe the Keys have a 115 mph, or greater, wind
speed factor. I saw what happened to channel six's tower, which was
located near Homestead, FL when hurricane Andrew ripped south Florida apart.
73..de John/K4WJ
On 12/12/2015 4:20 AM, Hans Hammarquist via TowerTalk wrote:
Hi Douglas,
I don't think you have to worry about fixing the tower base to the roof as you
are guying the tower in two places.
You can, simply, mix some cement (without any rocks) and make yourself a little
platform slightly larger than the tower base. If you plan to remove the tower
at some time in the future I suggest you spread out the cement over a single
plastic sheet at the spot where you are putting the tower. That way you are
able to remove the cement without leaving any marks.
Before the cement hardens you level off the top surface so you have the
horizontal surface you are looking for. I don't believe you have to anchor the
base, just rely on the friction between the base and the cement unless you have
some really windy conditions.
Good luck with your installation and use of your tower,
Hans - N2JFS
-----Original Message-----
From: Douglas Ruz (CO8DM) <co8dm@frcuba.co.cu>
To: Ron W8RJL <youngron@verizon.net>
Cc: towertalk <towertalk@contesting.com>
Sent: Fri, Dec 11, 2015 10:43 pm
Subject: Re: [TowerTalk] how to install the tower base over a sloping roof???
Thanks Ron,
Interesting idea using a solid hard wood shim a little larger than the base.
Bolts diameters are 3/8".
Bolts length are 2 1/2".
are not ok 4 bolts with that dimension to fix a base to the roof for 3 tower
sections like Rohn 25G ?
73....Douglas, CO8DM
"No creo que haya alguna emoción más intensa para un inventor que ver alguna
de sus creaciones funcionando. Esa emoción hace que uno se olvide de comer,
de dormir, de todo." - Nikola Tesla
----- Original Message -----
From: "Ron W8RJL" <youngron@verizon.net>
To: "Douglas Ruz (CO8DM)" <co8dm@frcuba.co.cu>
Sent: Friday, December 11, 2015 10:22 PM
Subject: Re: [TowerTalk] how to install the tower base over a sloping
roof???
Doug,
See attachment. You can make a solid hard wood shim a little larger than
the base. You would need longer bolts. 3/8" does not sound very big. Use
as
large as practical.
Good luck with your project.
Ron W8RJL
----- Original Message -----
From: "Douglas Ruz (CO8DM)" <co8dm@frcuba.co.cu>
To: <towertalk@contesting.com>
Sent: Friday, December 11, 2015 8:00 PM
Subject: [TowerTalk] how to install the tower base over a sloping roof???
Hi,
I would like install an small tower over the concrete roof, only 3
sections, 10 ft each. 2 set of guy wires (3 + 3).
I install the 3 anchor points but when i try intall the tower base i
found
the roof is not 100 % flat. It is an sloping or pitching roof...it is
very
soft...about 5, 7 or 10 degrees. i am planning bolt the base to the roof
but not crossing the roof...i will bolt the base in 4 points with 3/8
inch
bolts and will drill about 2 1/2 inch inside the roof.
How can i correct the sloping to put the base 100% flat (level) ???
Thanks,
73....Douglas, CO8DM
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73..de John/K4WJ
ex KN8PXG K8PXG K8WJ K4WJ ZF2HZ
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