If you're thinking of the TX-455, which is their smallest 55' tower, the
2.75 yards of concrete would normally be enough, but only with the standard
base embedded in a monolithic pour. Drilling for j-bolts or whatever is a
bit risky, the pour obviously won't be monolithic and you may damage the
existing structure. I'd probably dig a different hole and start again, with
the U.S. tower base. You can use the existing concrete as a base for a nice
"If everything seems under control, you're just not going fast enough." -
> -----Original Message-----
> From: Bill Ogden [SMTP:firstname.lastname@example.org]
> Sent: Friday, September 27, 2002 6:09 AM
> To: email@example.com
> Subject: [Towertalk] Changing towers
> I put up a 40' free standing aluminum tower last last year, with a
> 2-element quad on top. The tower was easy to walk up and seems to be
> exactly what was advertised.
> The problem is that, as the years have passed, I find I am no longer a
> climber --- even for a little 40' tower. In retrospect, I should have
> for a crankup (with the lifting/tilting device, as well). I am trying to
> estimate how much hassle there would be in changing towers. My target
> would be the U.S. Towers 55', three-section crank up.
> I currently have about 2.75 yards of concrete in the ground, in an
> irregular 3 x 4' pattern, about 4-5' deep. Could I use this as the base
> for the crankup? I would cut off the current mounting leg connectors,
> drill fairly deep holes in the concrete and use construction epoxy to hold
> the new mounting bolts for the crank-up. Should I pour more concrete next
> to the current mass (and maybe drill a few connecting rebar holes to link
> the two "pours" together)?
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