Jim
I recommend you contact US Tower directly or check their website. The bolts
they sent me last year for another MA-770 installation were straight bolts
and only 1 inch by 27 inches rather than the 1 inch by 36 inch bolts already
installed at the Nevada site.
Thanks and 73, Ted, K6XN
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] On Behalf Of Jim McDonald
Sent: Wednesday, February 01, 2006 8:32 AM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] LOOKING FOR A USED CRANK UP SELF
SUPPORTINGTUBULARTOWER
Doesn't US Tower require J-bolts, rather than straight bolts?
Jim N7US
> I am looking for a used self supporting crank up tower to install at
> a
location in Nevada for contesting. I already have in place 10 cubic yards
of steel reinforced concrete with 1 inch diameter by 36 inch long anchor
bolts imbedded in the concrete. The anchor bolts are spaced 9 inches apart
which will accommodate a US Tower tubular tower Model MA-770 with the
MARB-770 free standing Rotor Base and the early Tristao 70 +/- foot crank
up tubular towers.
> Are there other towers which would accept an anchor bolt pattern of
> four
one
inch diameter anchor bolts spaced 9 inches apart?
Hiya, Ted --
I wouldn't worry about the bolt pattern. The existing bolts can be
chopped off with a hand grinder and then you can rent a drill with a
concrete bit or a hammer drill to drill new holes. Epoxy in the new anchor
bolts and you're good to go. Construction guys do this all the time and it
works great. When you're done, the epoxy is typically stronger than the
concrete.
Cheers,
Steve K7LXC
TOWER TECH -
Professional tower services for amateurs
Cell: 206-890-4188
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