[TowerTalk] Rohn 45 Base
kd4e at verizon.net
Tue Apr 25 14:02:38 EDT 2006
> How big do I need to dig the hole for a ROHN 45 going up about 80'?
> I plan on using a section of tower in the cement then put 7 or 8 sections of tower on top of the base section
> thanks for any help
> 73 for the shack of wb5aaa
> Jim Barron
I would go 5x5x5 with steel reinforcement but
we are in sugar sand here and subject to
exceptionally high winds.
I looked in the Rohn book (you really should get
one) then made it bigger!
BTW: The manual says for 80' in "normal" soil
you have 3830 Reac. lbs. One of the engineers
here can tell you what that means!
I was setting up a tiltover which adds some
odd lifting torque so I went 6x6x6! (I was
also setting up a guyless tower so all of
the strength had to be in the base.)
South of me a contest station owner just sticks
them in the sand!
Others use a concrete base and a pier pin.
Your soil and wind conditions make a difference
as does your ability to fully guy or not.
Thanks! & 73, doc kd4e bibleseven.com
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